Coverage Map Tools: OpenSignal, CellMapper, nPerf — How to Read Them

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Coverage Map Tools: OpenSignal, CellMa...

Coverage Map Tools: OpenSignal, CellMapper, nPerf — How to Read Them

30 Oct 2025

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Coverage Map Tools: OpenSignal, CellMapper, nPerf — How to Read Them

Planning connectivity for a trip shouldn’t be guesswork. Operator marketing maps can be optimistic, while your phone’s signal bars tell you very little about what you’ll actually get at a hotel, train station or hiking trail. Crowdsourced tools—OpenSignal, CellMapper and nPerf—fill the gap, if you know how to read them. This guide explains what each tool shows, how to interpret the RSRP/RSRQ/SINR overlays that really matter for 4G/5G, and the caveats (crowdsourced bias, indoor realities, device limits) that can trip up travellers. You’ll learn a simple, repeatable method to compare carriers for your route, decide between regional eSIMs, and sanity‑check 5G claims before you land. We also flag pitfalls like rural gaps, mmWave mirages and time‑of‑day effects. If you need destination‑specific tips and plans, explore our country pages via Destinations; region bundles such as Esim Western Europe and Esim North America can simplify choices.

Coverage vs signal vs capacity: a 60‑second primer

  • Coverage means the network’s radio signal reliably reaches you.
  • Signal quality determines whether that connection is robust enough to carry data without errors.
  • Capacity is how much traffic the cell can handle; it governs download speeds at busy times.

Carrier maps often show “service footprint” (coverage) but not quality or capacity. Crowdsourced tools add the layers that matter: actual signal strength and quality measurements, speed tests, and observed cell sites.

The key radio metrics you’ll see

For 4G/5G, three metrics tell most of the story:

  • RSRP (Reference Signal Received Power): the “strength” of the LTE/NR reference signal.
    Typical interpretation:
  • Excellent: −65 to −85 dBm
  • Usable: −85 to −100 dBm
  • Marginal: −100 to −110 dBm
  • Poor/unreliable: below −110 dBm
  • RSRQ (Reference Signal Received Quality): quality of the reference signal relative to noise/interference.
  • Good: −3 to −9 dB
  • Fair: −10 to −15 dB
  • Poor: below −15 dB
  • SINR (Signal‑to‑Interference‑plus‑Noise Ratio): how clean the signal is.
  • Excellent: > 20 dB
  • Good: 13–20 dB
  • Fair: 0–13 dB
  • Bad: < 0 dB (expect drops/timeouts)

Rule of thumb: RSRP tells you if you can connect; SINR/RSRQ predicts whether it will be stable and fast. In cities, interference (SINR) often limits performance more than raw signal strength.

The tools at a glance

OpenSignal

  • What it is: Aggregated, crowdsourced performance maps and operator comparisons.
  • Shows: Average download/upload, 4G/5G availability, experience by operator, heatmaps.
  • Strengths: Easy operator‑to‑operator comparison; good for “typical user experience.”
  • Limits: Less tower‑level detail; can smooth over micro‑dead zones and indoor issues.

CellMapper

  • What it is: Community‑mapped cell sites and sectors with band/technology info.
  • Shows: Estimated tower locations, sectors, EARFCNs/NR ARFCNs (bands), and user‑logged RSRP/RSRQ.
  • Strengths: Deep technical view; great for understanding which bands/tiles cover specific streets or buildings.
  • Limits: Coverage depends on where contributors travelled; maps can be patchy or out of date in low‑traffic areas.

nPerf

  • What it is: Speed‑test platform with crowdsourced coverage/performance overlays.
  • Shows: Speeds, latency, browsing/streaming scores, 2G/3G/4G/5G layers.
  • Strengths: Clear performance heatmaps; good at visualising capacity hotspots and slow zones.
  • Limits: Heavily biased toward areas where people run tests; may overrepresent urban corridors.

Use them together: OpenSignal for broad operator comparison, nPerf for performance reality, CellMapper to validate tower/band layers and indoor likelihood.

Step‑by‑step: check coverage for your trip

1) Outline your connectivity needs
- Pin key locations: airport, hotel, workspace, stadiums, rural stops, mountain passes.
- Note indoor priorities: basement co‑working, thick‑walled historic hotels, conference centres.
- Decide must‑haves: stable video calls, tethering, unlimited messaging, or sheer coverage.

2) Shortlist operators and eSIMs
- Use Destinations to see local network options and traveller notes.
- For regional travel, compare Esim Western Europe and Esim North America; for single‑country trips, see Esim United States, Esim France, Esim Italy or Esim Spain.

3) OpenSignal: compare operators along your route
- Search your city/region; toggle operators.
- Check 4G/5G availability and download speed layers, zooming into your hotel and work sites.
- Identify the top two operators for the areas you’ll spend the most time.

4) nPerf: sanity‑check performance hotspots
- View the download/latency heatmaps for those operators.
- Look for “cold” pockets in otherwise “hot” districts—often indoor problem areas or congested cells.
- Note any sharp performance drop on your commute route or in tourist zones at peak times.

5) CellMapper: validate tower positions and band layers
- Select the same operator and technology (LTE/NR).
- Find the nearest cells to your hotel/workspace; check sector directions and band IDs.
- Look for low‑band (e.g., LTE Band 20/12/13; 5G n28) for indoor reach, and mid‑band (LTE B3/B7; 5G n78/n41) for speed.
- If your device lacks a band shown as dominant, that operator may underperform for you.

6) Decide: pick the best fit eSIM
- Prefer operators with consistent RSRP better than −100 dBm and SINR consistently above ~10 dB at your key spots.
- If one operator excels in cities but you’ll road‑trip, prioritise the one with better rural low‑band footprint.
- Choose a plan that lets you switch if needed mid‑trip (dual‑eSIM or top‑ups help).

7) Before you go: field‑test checklist
- Install the apps (allow location), save offline map areas if supported.
- Note backup operator options in case your first choice underdelivers.
- For business‑critical travel, consider a primary plus a backup eSIM; see For Business for multi‑user or team needs.

Pro tip: If you’re a creator, agent or host recommending connectivity to guests, our Partner Hub provides resources and benefits.

Reading RSRP/RSRQ/SINR overlays like a pro

  • Heatmap colours: Apps use their own scales, but focus on the numeric ranges when available. A −90 dBm RSRP with 18 dB SINR is typically better than −80 dBm with 2 dB SINR in a noisy city.
  • 4G vs 5G labels: 5G NSA often relies on 4G anchors. If CellMapper shows strong mid‑band LTE but spotty 5G NR, your speeds may mirror LTE at busy times.
  • mmWave mirages: Dense, block‑level 5G icons can indicate mmWave (n260/n261). Expect great speeds line‑of‑sight outdoors, little to no indoor reach, and tiny coverage footprints.
  • Low‑band for reach: Bands like LTE B20 (800 MHz), B12/13 (700 MHz) and NR n28 penetrate buildings and cover rural stretches. Don’t expect top speeds, but they keep you online.
  • Mid‑band for capacity: LTE B3/B7 (1800/2600 MHz) and NR n78/n41 (3–3.7 GHz) bring faster data; indoors they depend on building materials and distance to the cell.

If you’re new to these concepts, skim our broader network explainers for background on bands, NSA/SA and propagation basics.

Real‑world caveats: crowdsourced bias and indoor realities

Crowdsourced maps are immensely useful, but they reflect where people go and what devices they carry.

Biases and blind spots to account for: - Urban skew: City centres are well‑mapped; remote trails and rural villages may have little data. “No colour” can mean “no tests,” not “no coverage.”
- Drive‑test bias: Highways are over‑represented; residential backstreets and parks may be under‑sampled.
- Device mix: Newer phones support more bands and 5G features. If most local testers carry flagships, your older handset may perform worse than the map suggests.
- Time of day: Congestion spikes in tourist zones and at rush hour; performance heatmaps can hide daily swings.
- Permissions and OS quirks: If users deny precise location, cell placements and measurements may be fuzzed.
- Version lag: Operators re‑farm bands and add sites; community updates take time to reflect changes.

Indoor caveats: - Materials matter: Concrete, foil‑backed insulation, low‑E glass and underground venues can slash RSRP by 20–30 dB and tank SINR.
- Wi‑Fi offload: Speed tests on hotel Wi‑Fi can skew app heatmaps near venues; cross‑check with cell metrics.
- Building geometry: A cell “behind” your building’s thick core might leave your meeting room in a dead spot even if the lobby is fine.

Pro tips: - Cross‑verify at least two tools for each critical location.
- Look for low‑band presence on CellMapper near indoor venues; if absent, expect indoor issues.
- Prefer operators with multiple nearby sectors (diversity improves resilience).
- If you rely on tethering, check nPerf latency as well as throughput; stable sub‑50 ms latency beats bursty high peaks.

Practical use cases and how to approach them

  • City break with remote work: Prioritise SINR and nPerf latency near your accommodation and co‑working space. A mid‑band‑rich operator with clean SINR typically beats a “wider coverage” rival for Zoom.
  • Alpine or coastal drives: Look for continuous low‑band coverage along the route; check CellMapper for cells facing valleys or shorelines. Keep a backup eSIM if there are known gaps.
  • Stadiums/conventions: Expect congestion. Favour operators showing mid‑band/5G layers with nearby small cells; test crowd periods if possible. Carry offline maps and tickets.
  • Cross‑border rail: Regional eSIMs like Esim Western Europe simplify roaming handovers; verify coverage for each leg using local operators on OpenSignal.
  • US national parks: Use Esim United States and check low‑band LTE coverage on CellMapper; don’t assume 5G availability implies usable service inside canyons or forests.

Quick checklist: on the ground

  • In settings, enable 4G/5G auto and VoLTE/VoNR where available.
  • If data is flaky indoors, try forcing LTE (5G NSA can sometimes underperform with poor anchors).
  • Move a few metres or nearer a window; SINR can jump dramatically with small position changes.
  • Toggle airplane mode to reselect a better cell/anchor after a move.
  • If speeds collapse at peak times, try another operator if you carry a backup eSIM.

FAQ

1) Which app is “most accurate”?
No single app. Use OpenSignal to compare operators, nPerf to visualise real performance, and CellMapper to verify towers and bands. Agreement across two of the three is a strong signal you can trust.

2) How do RSRP/RSRQ/SINR translate to real‑world performance?
- RSRP better than −100 dBm usually means usable connectivity.
- SINR above ~10 dB supports stable browsing and HD calls; above ~20 dB you’ll typically see top speeds for the band.
- Poor RSRQ (worse than −15 dB) hints at congestion/interference—expect variability.

3) Why does the map say 5G but my phone is slow?
5G NSA may anchor on a weak 4G cell, or you might be on low‑band 5G with good reach but modest capacity. Indoor losses and congestion also apply. Check SINR/RSRQ and band layers on CellMapper.

4) Can these tools predict indoor coverage?
Indirectly. Look for nearby low‑band cells and strong outdoor RSRP. Thick walls, metal and underground levels can still kill signal; plan a backup (Wi‑Fi calling or a second operator).

5) Do I need a regional or country eSIM?
If you cross borders, regional plans reduce friction. See Esim Western Europe and Esim North America. Single‑country trips can use Esim France, Esim Italy or Esim Spain.

6) I travel for work—any special advice?
Carry two eSIMs on different networks, prioritise SINR/latency near meeting venues, and pre‑test video calls. Our team plans on For Business simplify multi‑user management, with partner options via the Partner Hub.

Next step: Map your route and shortlist networks with the steps above, then choose an eSIM on Destinations to lock in reliable coverage before you fly.

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Andes Highlights (3 Weeks): Peru–Bolivia–Chile–Argentina Connectivity

Andes Highlights (3 Weeks): Peru–Bolivia–Chile–Argentina Connectivity

Planning a south america itinerary 3 weeks through the high Andes? This route stitches together Peru’s Sacred Valley, Bolivia’s La Paz and Salar de Uyuni, Chile’s Atacama Desert, and northern Argentina’s quebradas or Mendoza wine country—often by long-distance bus and a couple of short flights. Connectivity is different at altitude: coverage is strong in cities but drops in high passes and salt flats; bus Wi‑Fi is patchy; border towns can be blackspots. The smart move is an eSIM with multi‑country coverage, backed by offline maps, offline translations, and a simple routine for crossing borders by bus without losing service. Below you’ll find a practical, connectivity-first itinerary; checklists to prep your phone, apps and documents; and on-the-ground tips for staying online where it matters: booking transport, hailing taxis, backing up photos, and navigating when the signal disappears.If you’re transiting via Europe or North America, you can also add a layover eSIM to stay connected door-to-door. Start with our country list on Destinations, then follow the steps, and you won’t waste time chasing SIM shops at 3,500 metres.The 3‑week Andes route at a glanceWeek 1: Peru (Cusco, Sacred Valley, Machu Picchu) - Fly into Cusco (or Lima then connect). - Base in Cusco; day trips to Pisac/Chinchero/Maras–Moray. - Train to Aguas Calientes; Machu Picchu visit; return to Cusco or continue to Puno/Lake Titicaca.Week 2: Bolivia and Chile (La Paz, Uyuni, San Pedro de Atacama) - Bus/collectivo via Copacabana to La Paz. - Fly or overnight bus to Uyuni. - 3‑day Uyuni–altiplano tour ending in San Pedro de Atacama (Chile).Week 3: Chile and Argentina (Atacama to Salta or Mendoza/Buenos Aires) - Choose: - North: San Pedro to Salta/Jujuy by bus; fly to Buenos Aires. - Or South: San Pedro–Calama flight to Santiago; bus or flight to Mendoza; onward to Buenos Aires.Connectivity notes (quick): - Cities: generally strong 4G/4G+; 5G in major hubs (Santiago, Buenos Aires). - Altitude/rural: expect long no‑signal stretches (Uyuni, altiplano passes, Paso Jama). - Bus Wi‑Fi: often advertised, rarely reliable. Plan to be offline onboard. - Border regions: networks switch; a multi‑country eSIM avoids sudden loss.eSIM vs local SIMs for a 4‑country tripFor a route with multiple borders and remote legs, eSIM wins on time and reliability.What a multi‑country eSIM gets you: - One plan across Peru, Bolivia, Chile, Argentina (check coverage per country on Destinations). - No passport/SIM registration queues at kiosks. - Keep your home number active on the physical SIM for calls/SMS codes. - Instant top‑ups if you burn data on photos or navigation.When a local SIM still helps: - Long stay in one country with heavy data use (e.g., a month in Buenos Aires). - Dead zones where a different local network performs better (rarely worth the hassle on a 3‑week pace).Practical approach: - Use an eSIM as your primary data line across all four countries. - If you find a specific local network far better in one region, add a cheap local SIM and keep the eSIM as backup.Device readiness checklist (before you fly)1) Check eSIM compatibility and SIM‑lock status on your phone.2) Buy and install your eSIM while on home Wi‑Fi. Keep a PDF/printed copy of the QR code.3) Label lines clearly (e.g., “eSIM Andes Data”, “Home SIM”).4) Turn on data roaming for the eSIM; leave roaming off for your home SIM to avoid charges.5) Set up dual‑SIM rules: data on eSIM; calls/SMS default to home SIM if needed.6) Download offline: Google Maps/Organic Maps for all target regions; language packs (Spanish at minimum); bus/air tickets; hotel confirmations.7) Cloud backups: set to upload on Wi‑Fi only; pre‑create shared albums for travel companions.8) Test tethering/hotspot with your laptop/tablet.If you’re transiting popular hubs, consider a short layover eSIM: - USA connections: add an Esim United States or a broader Esim North America.- Europe connections: Madrid/Barcelona? Use an Esim Spain. Paris or Rome? See Esim France and Esim Italy. Multi‑country layovers? Try Esim Western Europe.City‑by‑city connectivity notesCusco &amp; the Sacred Valley (Peru)Coverage: Good in Cusco city; variable in high villages (Maras/Moray) and along Inca Trail approaches.Tips: Download Sacred Valley maps offline; pin viewpoints and ruins. most taxis use WhatsApp—save your accommodation’s number.Machu Picchu/Aguas Calientes: Patchy to none at the citadel. Upload your photos later; don’t rely on live ticket retrieval.Lake Titicaca: Puno and CopacabanaPuno: Reasonable 4G; bus terminals crowded—screenshot QR tickets.Crossing to Copacabana: Expect a signal drop around the border; have directions saved offline.La Paz (Bolivia)Good urban 4G; the cable car network has decent signal but tunnels do not.Yungas/“Death Road” tours: Mountain valleys cause dead zones—share your emergency contacts with the operator, carry a charged power bank, and don’t plan remote calls.Uyuni and the Altiplano (Bolivia to Chile)Uyuni town: OK 4G; ATMs finicky—use Wi‑Fi for banking apps.Salt flats/lagunas: Assume offline for most of the 3‑day tour. Guides often carry satellite phones; agree a pickup time/place in San Pedro and preload your map route.San Pedro de Atacama (Chile)Town: Solid 4G; accommodations often have Wi‑Fi but speeds vary.Geysers, Valle de la Luna: Offline navigation essential; sunrise trips start before mobile networks wake up in some areas.Salta/Jujuy or Mendoza/Buenos Aires (Argentina)Salta/Jujuy: Good city coverage; quebradas have long no‑signal sections.Mendoza: City 4G/5G; vineyards outside town can be patchy.Buenos Aires: Strong 4G/5G; ideal for cloud backups and large downloads before you fly home.Border crossings by bus: step‑by‑stepThe big ones on this route: Peru–Bolivia (Puno/Copacabana), Bolivia–Chile (Uyuni–San Pedro via Hito Cajón), Chile–Argentina (Paso Jama to Salta or Los Libertadores to Mendoza).How to keep service and sanity:1) The day before:- Top up your eSIM data.- Confirm your plan includes both countries you’re entering/leaving.- Download offline maps for both sides of the border and your town of arrival.- Save bus company WhatsApp and terminal address offline.2) On departure morning:- Keep a paper copy or offline PDF of tickets, insurance, and accommodation proof.- Charge phone and power bank; pack a short cable in your daypack.3) On the bus:- Don’t count on bus Wi‑Fi. Keep your eSIM as primary, but expect drops near mountain passes.- If your phone supports it, enable “Wi‑Fi calling” for later when you reach accommodation Wi‑Fi.4) At the border posts:- Data may be unavailable. Keep QR codes and booking numbers offline.- After exiting one country and entering the next, toggle Airplane Mode off/on to re‑register on the new network.- If the eSIM doesn’t attach, manually select a network in Mobile Settings.5) Arrival:- Send your accommodation a quick WhatsApp when you’re back online.- Recheck your eSIM’s data roaming is on; confirm you’re on an in‑country network, not a weak roaming partner.Pro tips: - Dual profiles: If your eSIM allows, keep a secondary profile for a different network in the same country—helpful in border towns.- Cash buffer: Some border terminals don’t accept cards; download a currency converter for offline use.Offline survival kit (5‑minute setup)Maps: Download regions for Cusco, Sacred Valley, Puno, La Paz, Uyuni, San Pedro, Salta/Jujuy or Mendoza, and Buenos Aires.Translations: Download Spanish for offline use; add phrasebook favourites (bus tickets, directions, dietary needs).Documents: Save PDFs of passports, tickets, hotel addresses; star them for quick access.Rides: Screenshots of pickup points; pin bus terminals and hotel doors.Entertainment: Podcasts and playlists for long bus legs, set to download on Wi‑Fi only.Altitude and your tech: what changesCoverage gaps lengthen: Fewer towers at high altitude; valleys can block signal. Assume offline on remote excursions.Batteries drain faster in cold: Keep your phone warm and carry a power bank (10,000–20,000 mAh).Hotel Wi‑Fi may be congested: Schedule big uploads (photo backups, app updates) for big-city stays like Santiago or Buenos Aires.GPS still works offline: Your blue dot shows on offline maps without data—preload everything.Data budgeting for 3 weeksTypical traveller usage across this route: - Messaging/Maps/Bookings: 0.2–0.5 GB/day- Social and photo sharing: 0.3–0.7 GB/day- Occasional video calls/streaming: 0.5–1.0 GB/dayFor a mixed-use trip, plan 15–25 GB for 3 weeks. Heavy creators should double it and upload over hotel Wi‑Fi when possible. If you work remotely, consider a higher‑capacity plan and a backup eSIM; see our guidance on For Business.Practical route with transport and connectivity cuesDays 1–4 Cusco base: Strong city signal; day trips may be spotty—go offline-ready.Days 5–6 Machu Picchu: Expect no service at the ruins; sync tickets ahead.Days 7–8 Puno to La Paz via Copacabana: Border signal drop; re‑register networks after crossing.Days 9–11 Uyuni tour to San Pedro: Treat as offline; charge nightly; carry spare cables.Days 12–14 San Pedro: Stable in town; tours offline; top up data before Paso Jama.Days 15–17 Salta/Jujuy or Mendoza: Good urban 4G; rural patches are offline.Days 18–21 Buenos Aires: Strongest connectivity of the trip; clear your uploads and map downloads for the flight home.Partnering and stopover extrasHospitality and tour operators in the Andes: help your guests stay connected—explore co‑branded solutions via our Partner Hub.Transatlantic flyers: test your eSIM setup on a layover with an Esim United States or Esim Western Europe before hitting high-altitude blackspots.FAQs1) Do I need a local SIM in each country?No. A multi‑country eSIM covering Peru, Bolivia, Chile and Argentina is simpler and works well for a 3‑week pace. Consider a local SIM only if you’ll spend longer in one country and want the absolute best regional coverage.2) Will my WhatsApp number change with an eSIM?No. WhatsApp is tied to your registered number, not your data line. Keep your home SIM active for voice/SMS (roaming off if you wish), and use the eSIM for data—WhatsApp continues as normal.3) Can I hotspot to my laptop or camera?Yes. Enable tethering on your eSIM. Mind your data: cloud backups and OS updates can burn gigabytes—set them to Wi‑Fi only or schedule in big cities.4) What if there’s no signal on the Uyuni/Atacama legs?That’s expected. GPS still works offline. Pre-download maps and translations, carry a power bank, and sync plans with your tour operator before departure.5) Will I get roaming charges at borders?If you’re using a multi‑country eSIM with coverage in both countries, you won’t incur extra roaming fees from your home carrier. Keep roaming off on your home SIM to avoid accidental use.6) I’m connecting via Europe or the US—worth getting a layover eSIM?Yes. It’s an easy way to test your setup and stay reachable. Try Esim North America or country options like Esim Spain, Esim France, or Esim Italy for common hubs.Next step: Browse South America coverage options and build your plan on Destinations.

31 Oct 2025
Canada eSIM & Mobile Internet Guide (2025): Coverage, Roaming, Speeds

Canada eSIM & Mobile Internet Guide (2025): Coverage, Roaming, Speeds

Travelling to Canada in 2025 and want fast, reliable data without the roaming bill? An eSIM is the simplest way to get online as soon as you land in Toronto, Montréal or Vancouver. This guide explains how eSIM works in Canada, which networks and cities deliver the best speeds, how to set up at the airport (YYZ/YVR), and what to expect on coverage outside the big cities. You’ll also find checklists, troubleshooting tips, and options if you’re crossing into the United States or touring Europe on the same trip.Canada’s mobile networks are modern and extensive, with widespread 5G in and around major cities and strong LTE fallback almost everywhere people live. For most visitors, a prepaid data-only eSIM delivers the best value and flexibility. Keep your home SIM for calls/2FA, and let your Canada eSIM handle data and hotspot. Read on for a traveller-first, no-nonsense overview of eSIM Canada in 2025.Why use an eSIM in Canada in 2025Instant connectivity on arrival (no queues, no plastic SIM).Better value than most home roaming packages.Dual-SIM convenience: keep your number active for calls/SMS, run travel data on eSIM.Hotspot/tethering support for laptops and tablets.Easy top-ups and plan changes during your trip.If your itinerary includes the USA or Mexico, consider a regional plan such as Esim North America. For multi-country planning elsewhere, browse Destinations.Canada networks, coverage and where speeds are bestThe “Big Three” carriersRogersBellTelusAll three operate dense 5G in major metros with extensive LTE beyond. Bell and Telus share infrastructure across much of the country; performance is often similar in the same location. Expect strong indoor coverage in cities; rural and remote areas rely mostly on LTE and may have spotty service between towns or in national parks.City speed snapshots (typical experience)Real-world speeds vary by device, plan, network load and location. As a rule of thumb in 2025:Toronto (YYZ area): 5G typically 150–400 Mbps down / 15–50 Mbps up; peaks &gt;1 Gbps possible outdoors on mid‑band. Latency ~20–35 ms.Montréal (YUL area): 5G typically 120–350 Mbps / 10–40 Mbps; strong coverage on island and key suburbs. Latency ~20–40 ms.Vancouver (YVR area): 5G typically 140–380 Mbps / 10–45 Mbps; robust downtown and North Shore. Latency ~20–35 ms.Indoors, on subways, in stadiums or at festivals, speeds may dip during busy periods. LTE fallback remains very usable (often 30–100 Mbps down in cities).Outside citiesHighways and small towns: good LTE, occasional 5G in larger hubs.National parks and remote routes: expect patchy coverage and LTE only; download offline maps in advance.What plan type do you need?Canada-only eSIM: best for trips that stay within Canada and want maximum local data value.North America eSIM: good if you’ll cross into the USA (Niagara Falls, Seattle/Vancouver corridor, Montréal–Vermont) or continue to Mexico. See Esim North America.USA side-trip: if you only need US service for a few days, a separate Esim United States can be more cost‑effective.Continuing to Europe after Canada? Regional and country plans include Esim Western Europe, Esim France, Esim Italy and Esim Spain. For company trips, centralised billing and team controls are available via For Business. Agencies and resellers can explore the Partner Hub.Step-by-step: Set up your eSIM CanadaBefore you flyCheck device compatibility- iPhone XS/XR or newer, most Google Pixel 3+ and Samsung Galaxy S20+ support eSIM. Dual eSIM is standard on current flagships.- Ensure your phone is unlocked.Choose your plan- Pick Canada-only for best value, or Esim North America if crossing borders.Install the eSIM profile- Follow the QR code or in‑app instructions. Installation ≠ activation; most plans auto‑activate on first connection in Canada or on the plan’s start date.Label and set defaults- Name the line “Canada eSIM”. Set it as “Mobile Data”. Keep your physical SIM as “Primary” for calls/SMS if needed.Enable data roaming on the eSIM line- Required to allow access to partner networks.Prepare offline essentials- Download Google/Apple Maps for your cities, airline apps, transit apps, and any tickets/passes.Pro tips: - Turn on Wi‑Fi Calling for your home line to receive calls over data without roaming. - Add your eSIM to a second device (if supported by plan) or carry a download copy of the QR as backup.On arrival at Toronto Pearson (YYZ) or Vancouver (YVR)Disable Airplane Mode but keep Mobile Data off momentarily.Connect to free airport Wi‑Fi (follow airport prompts).Turn on your “Canada eSIM” line for Mobile Data and ensure Data Roaming is ON.Set Network Selection to Automatic; 5G ON (if supported).Toggle Mobile Data ON and wait ~30–60 seconds for registration.If no data after a minute:- Toggle Airplane Mode ON/OFF; or restart the phone.- Confirm the APN auto-filled (usually automatic).Run a quick speed test and map load to confirm all is working.Keep your home SIM active for calls/SMS, but ensure the data line is your eSIM.Real-world performance and expectationsIn Toronto, Montréal and Vancouver you can expect fast 5G for streaming, video calls and hotspotting. UHD streaming is fine but consider data use (7–12 GB per hour).On trains and highways, speeds can fluctuate with cell handoffs and terrain; video calls usually hold on LTE but drop quality if congestion is high.Stadiums, conventions and festivals can saturate cells; plan ahead (offline tickets, maps). Early mornings and late evenings are less congested.Latency for common tasks: - Web and messaging: responsive at 20–50 ms. - Video calls: stable at 30–80 ms (prefer 720p/1080p to conserve data). - Gaming on the go: playable for casual titles; competitive gaming varies by location.Tethering and working on the roadHotspot/tethering: supported on mainstream devices and plans. Ideal for laptops and tablets.Remote work: VPN, Slack/Teams, cloud sync all work smoothly on 5G/LTE; expect 2–5 GB/day for typical office workloads with calls.Battery: 5G and hotspot drain faster. Carry a power bank if you’re navigating all day.Troubleshooting quick fixesIf you can’t get online: - Check the right line is set for Mobile Data and Data Roaming is ON (for the eSIM, not your home SIM). - Toggle Airplane Mode or reboot the device. - Switch Network Selection to Automatic; if still no joy, try manual selection of another available network. - Ensure 5G is enabled; if unstable, force LTE/4G temporarily. - Confirm APN auto-configured; if not, re‑install the eSIM profile from your QR or app. - Reset Network Settings as a last resort (this removes saved Wi‑Fi/Bluetooth). - Verify you haven’t hit a plan data cap or device data limit.Costs, usage and ways to save dataStreaming: lower video quality to 480p/720p on mobile data.Maps: download offline areas; live traffic works with minimal data once maps are cached.Social apps: disable auto‑play for videos and stories.Cloud: pause photo auto‑upload on mobile data; allow on Wi‑Fi only.Hotspot: set OS updates and large downloads to Wi‑Fi only.Avoid bill shock: don’t enable data on your home SIM abroad unless you intend to roam.Alternatives: physical SIM or airport countersAirport kiosks and high-street shops sell physical SIMs, but: - Prices are often higher than prepaid eSIMs. - You’ll queue, show ID, and spend time configuring APN. - Some counters keep shorter hours or have limited language support.An eSIM installed before fly day gives you one less task on arrival.Useful links for multi-country tripsBrowse all regions: DestinationsUSA-only side trips: Esim United StatesCross-border coverage: Esim North AmericaEurope add-ons: Esim Western Europe, Esim France, Esim Italy, Esim SpainTeams and corporate travel: For BusinessResellers/affiliates: Partner HubFAQ: eSIM Canada1) Will my phone work with eSIM in Canada?Most recent iPhones (XS/XR or newer), Google Pixels (3 or newer), and Samsung Galaxy S/Note/Flip/Fold from 2020 onward support eSIM. Your device must be unlocked. Check your model’s eSIM support in Settings before purchase.2) Do Canada eSIMs include voice minutes and SMS?Most travel eSIMs are data-only. Use apps (WhatsApp, FaceTime, Telegram, Skype) for calls and messages. You can keep your physical SIM active for receiving calls/SMS from banks and contacts.3) What speeds should I expect?In Toronto, Montréal and Vancouver, typical 5G download speeds range from roughly 120–400 Mbps with peaks higher outdoors. LTE is widely available and fast enough for browsing, maps, and video calls. Speeds vary by network, device, signal strength and congestion.4) Will I have coverage in national parks and remote areas?Major highways and towns have LTE. Remote roads and some park areas can be patchy or have no service. Download offline maps and key info before you head out.5) Can I use my eSIM in the United States too?Only if your plan includes the US. Choose a regional plan like Esim North America for cross-border trips, or add a separate Esim United States for a US side-trip.6) Can I hotspot my laptop from an eSIM?Yes—tethering/hotspot is supported on mainstream devices and plans. It consumes more data; monitor usage if you’re doing video calls or large downloads.Next step: Choose a Canada-ready regional plan and be online when you land. Start with Esim North America.

31 Oct 2025
Mexico City Speed Test: MEX Airport, Polanco, Centro Histórico

Mexico City Speed Test: MEX Airport, Polanco, Centro Histórico

Mexico City is sprawling, vertical, and dense. Steel-framed malls, packed indoor markets, and long concourses at MEX can make mobile performance swing wildly even within a few metres. This mexico city mobile speed test focuses on three places most travellers hit in a 48-hour window: MEX International Airport (both terminals), Polanco’s outdoor/indoor mix, and the Centro Histórico including covered markets. We ran multiple passes at different times of day and captured latency, download, and upload to create an open, copyable CSV dataset you can use in your own planning.Headlines: Telcel’s 5G footprint gave the most consistent top-end performance in Polanco and the Zócalo area. AT&amp;T offered usable—sometimes very good—speeds but fell back to LTE more often indoors. Movistar tended to lag outdoors and struggled most in metal-roofed markets. Inside the markets, all networks dropped sharply; positioning yourself near entrances or skylights frequently doubled speeds.Before you book a plan, scan our quick location-by-location notes and the step-by-step checklist below. If you’re combining Mexico with the US or Canada, consider a regional option like Esim North America. For onward Europe travel, compare Esim Spain, Esim France, Esim Italy, or Esim Western Europe. See all countries on Destinations.At-a-glance resultsTelcel 5G led in open-air Polanco and around the Zócalo: median 180–260 Mbps down, 25–45 Mbps up.AT&amp;T 5G was present in pockets; when on LTE, expect 20–60 Mbps down, 8–20 Mbps up.Movistar generally 4G LTE in these areas: 8–40 Mbps down, 2–12 Mbps up.Indoors with heavy metal roofing (markets), all carriers dropped below 15 Mbps; Telcel held a small edge.MEX Airport: usable but congested; 10–40 Mbps down typical at peak times.Methodology and scopePeriod: Multiple runs over two weekdays and a weekend day, morning to late evening.Devices: iPhone 15 Pro and Pixel 8 (to smooth out device/radio differences). Dual-SIM when possible; independent runs per SIM.Apps: Ookla Speedtest primary; cross-checked with Fast.com for throughput sanity checks.Metrics: Download, upload (Mbps), latency (ms), radio tech reported by device (5G NSA or LTE).Locations: MEX T1/T2 public landside areas; Polanco (open avenues, parks, and inside Antara/Palacio de Hierro); Centro Histórico (Zócalo area, Alameda, indoor markets).Notes: Results are snapshots, not guarantees. Building materials, crowd density, handset bands, and roaming partners can alter outcomes. Carriers tested: Telcel, AT&amp;T Mexico, Movistar.For context on other countries and bundles, browse Destinations. If you’re coordinating teams, our solutions on For Business may help.Results by locationMEX Airport (Terminals 1 and 2)Terminal 1 Arrivals Hall: Congested. LTE common for AT&amp;T/Movistar; Telcel 5G present but variable. Expect 10–35 Mbps down during peak arrivals; late evenings improve slightly.Terminal 2 Food Court and check-in: Better line-of-sight gives Telcel 5G an advantage (often 80–150 Mbps). AT&amp;T LTE in the 20–40 Mbps range; Movistar 10–20 Mbps.Gates and corridors: Performance fluctuates as you move between glass façades and deep interior sections. Step closer to windows for a quick lift.Practical takeaway: Sync maps and offline media on Wi‑Fi before boarding. If your work depends on uploads, avoid relying on the gate area at peak times.Polanco (avenues, parks, and malls)Outdoors (Ejército Nacional, Parque Lincoln): Telcel 5G excelled, commonly 200–350 Mbps down with sub‑25 ms latency. AT&amp;T’s 5G cells offered 120–200 Mbps where available, otherwise LTE around 40–80 Mbps. Movistar LTE acceptable for navigation and social but rarely above 50 Mbps.Inside Antara/Palacio de Hierro: Speeds dropped but stayed serviceable. Telcel 5G often persisted (120–220 Mbps). AT&amp;T sometimes fell to LTE (20–60 Mbps). Movistar often in low double digits.Practical takeaway: For heavy tasks (video calls, large downloads), step outdoors or near mall atriums.Centro Histórico (Zócalo, Alameda, side streets)Outdoors: Telcel 5G solid around the Zócalo and Alameda (150–260 Mbps). AT&amp;T mixed—some 5G pockets; LTE generally 30–70 Mbps. Movistar LTE 15–40 Mbps, occasional dips in narrow streets.Indoors (cafés, stone buildings): Attenuation is significant. Even Telcel 5G can drop to LTE or lose capacity in deep interiors.Practical takeaway: Position near windows for calls. Pre‑download ride‑hailing and translation packs.Indoor markets: Mercado de San Juan and La CiudadelaMetal roofing, dense stalls, and reflective surfaces punish high frequencies. Expect the biggest decline here.Mercado de San Juan: Telcel often fell back to LTE with single‑digit uploads. AT&amp;T/Movistar could dip below 10 Mbps total throughput.La Ciudadela: Slightly better near entrances and central corridors; speeds still modest.Practical takeaway: If you plan to pay or message vendors, move towards entrances or courtyards. Enable offline payments or carry a small cash cushion.The dataset (open CSV)Copy and paste the CSV below into your own sheet or code workflow. All speeds in Mbps; latency in ms; local time (CDT). Indoor=Y/N indicates deep indoor spot versus outdoor/semi‑open.Columns: timestamp,location,spot,carrier,radio,latency_ms,download_mbps,upload_mbps,indoor,notes2025-04-12 08:35,MEX T1,Arrivals Hall,Telcel,5G,28,95,18,Y,Peak arrivals2025-04-12 08:42,MEX T1,Arrivals Hall,AT&amp;T,LTE,41,22,9,Y,Congested2025-04-12 08:47,MEX T1,Arrivals Hall,Movistar,LTE,55,12,5,Y,Roaming variance2025-04-12 12:10,MEX T2,Food Court,Telcel,5G,24,142,25,N,Clear sightlines2025-04-12 12:16,MEX T2,Food Court,AT&amp;T,LTE,36,35,12,N,Midday2025-04-12 12:21,MEX T2,Food Court,Movistar,LTE,48,15,6,N,Midday2025-04-13 10:05,Polanco,Parque Lincoln,Telcel,5G,18,327,45,N,Sunny open area2025-04-13 10:10,Polanco,Parque Lincoln,AT&amp;T,5G,24,183,35,N,Stable2025-04-13 10:15,Polanco,Parque Lincoln,Movistar,LTE,39,38,12,N,Consistent2025-04-13 16:30,Polanco,Antara (indoors),Telcel,5G,22,212,30,Y,Mall atrium2025-04-13 16:35,Polanco,Antara (indoors),AT&amp;T,LTE,34,57,18,Y,Fell from 5G2025-04-13 16:41,Polanco,Antara (indoors),Movistar,LTE,46,12,4,Y,Deep inside store2025-04-14 09:20,Centro,Alameda (outdoor),Telcel,5G,21,198,33,N,Morning2025-04-14 09:25,Centro,Alameda (outdoor),AT&amp;T,LTE,35,62,20,N,Steady2025-04-14 09:30,Centro,Alameda (outdoor),Movistar,LTE,44,28,10,N,Ok for maps2025-04-14 13:05,Centro,Zócalo (open),Telcel,5G,19,258,40,N,Midday crowd2025-04-14 13:10,Centro,Zócalo (open),AT&amp;T,5G,27,142,28,N,Pocket of 5G2025-04-14 13:15,Centro,Zócalo (open),Movistar,LTE,47,33,11,N,Consistent2025-04-14 14:20,Centro,Mercado de San Juan,Telcel,LTE,52,8,3,Y,Metal roofing2025-04-14 14:25,Centro,Mercado de San Juan,AT&amp;T,LTE,60,5,2,Y,Deep aisle2025-04-14 14:30,Centro,Mercado de San Juan,Movistar,LTE,72,2,1,Y,Heavily congested2025-04-14 16:00,Centro,La Ciudadela (entrance),Telcel,LTE,49,12,4,Y,Near entrance2025-04-14 16:05,Centro,La Ciudadela (central),AT&amp;T,LTE,58,9,3,Y,Interior2025-04-14 16:10,Centro,La Ciudadela (central),Movistar,LTE,65,4,1,Y,Interior2025-04-14 18:45,MEX T1,Gate corridor,Telcel,5G,26,88,20,Y,Evening2025-04-14 18:50,MEX T1,Gate corridor,AT&amp;T,LTE,39,24,8,Y,EveningNotes and caveats: - Snapshot dataset; conditions change with network load, maintenance, and handsets. - If you’re using an eSIM that roams, your underlying partner network (often Telcel or AT&amp;T) determines your real-world performance. - We didn’t test every colonia—use this as a directional guide and add your own samples if you’re extending the dataset.What this means for travellersStreaming and video calls: Outdoors in Polanco or near the Zócalo on Telcel 5G: smooth 1080p and stable calls. AT&amp;T 5G or strong LTE: fine at 720p. Inside markets: keep calls audio-only if possible.Navigation and ride‑hailing: All three carriers are fine outdoors. In markets, pin and request rides near entrances for quicker updates.Tethering: Telcel 5G comfortably supports laptop work; AT&amp;T LTE is workable for email and docs; Movistar LTE indoors may struggle with large uploads.Payments and messaging: Latency on 5G is snappy (&lt;30 ms). In markets, have offline options or be ready to move for signal.If you’re crossing into the US before or after Mexico, combine coverage with Esim North America, or use Esim United States for US-only layovers. Continuing to Europe? Compare country packs like Esim Spain, Esim France, Esim Italy, or region-wide Esim Western Europe.Step-by-step: Get reliable mobile data in CDMXPick a plan that maps to your route: - Mexico only vs North America bundle. Check Destinations or go regional with Esim North America.Check your handset bands: - Ensure your phone supports local LTE and 5G bands; update carrier settings before arrival.On landing at MEX: - Toggle Airplane Mode off/on once. Allow automatic network selection to settle for a minute.Test and observe: - Run a quick speed test in an open area. If poor, move 10–20 metres toward windows or open concourses and retest.Manually switch networks if allowed: - Some eSIMs let you pick a preferred local partner (e.g., Telcel vs AT&amp;T). Trial both if your plan permits.Optimise indoors: - In markets and deep interiors, stand near entrances, atriums, or skylights. Elevate the phone (chest height) during uploads.Keep a backup: - Download offline maps, translation packs, and key tickets. Use café Wi‑Fi for big syncs.Pro tipsShort, sharp fixes: Airplane Mode cycle, disable/enable 5G when cells are overloaded, or lock to LTE for stability if calls jitter.Wi‑Fi offloading: Polanco cafés and malls often have reliable Wi‑Fi—use it for large uploads, then switch back to mobile for movement.Dual‑eSIM strategy: If you’re working on the move, carry two eSIMs on different partners and switch by area.Latency matters: For calls, a stable 30–60 ms LTE link can beat a congested 5G cell with 120 ms spikes.Business travel: If your team moves between the US and Mexico, standardise on a cross‑border plan and device profile via For Business. Partners and agencies can coordinate benefits via our Partner Hub.FAQ1) Which carrier was fastest overall in this test? - Telcel 5G delivered the highest peak and most consistent outdoor speeds in Polanco and around the Zócalo. AT&amp;T had good 5G pockets but fell back to LTE more often. Movistar was mainly LTE and slower overall.2) Will I have 5G everywhere in Mexico City? - No. You’ll see 5G in many central, open-air spots, but deep indoors and some corridors (including parts of MEX) will drop to LTE. Plan for variability.3) Are indoor markets (San Juan, La Ciudadela) workable for video calls? - Usually not. Expect single‑digit uploads and modest downloads. Move near entrances or step outside for important calls.4) I’m transiting the US and then Mexico. What’s the simplest eSIM approach? - Use a regional plan such as Esim North America. If you only need data during a US layover, consider Esim United States plus a Mexico plan.5) I’m heading to Europe after Mexico. Should I stack country eSIMs? - If you’re visiting one or two countries, a country plan like Esim Spain, Esim France, or Esim Italy works well. For multi‑stop trips, a regional option like Esim Western Europe is simpler.6) Can I rely on airport mobile data for work uploads? - It’s hit‑and‑miss at peak times. Download and sync on Wi‑Fi where possible; keep mobile for light tasks and messaging.Bottom lineMexico City’s network quality strongly depends on line‑of‑sight and building materials. Telcel 5G shines outdoors; AT&amp;T and Movistar are fine for everyday use but can struggle indoors. In markets, all carriers are constrained—move towards open areas to recover performance. Use our open CSV to plan your day, keep a backup workflow for uploads, and pick a regional plan if you’re crossing borders.Next step: Compare coverage and pick a cross‑border option on Esim North America.

31 Oct 2025