Throttling & Fair‑Use Policies: What “Unlimited” Really Means

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Throttling & Fair‑Use Policies: What “...

Throttling & Fair‑Use Policies: What “Unlimited” Really Means

30 Oct 2025

Networks
Throttling & Fair‑Use Policies: What “Unlimited” Really Means

Travellers love the promise of “unlimited data”, but networks define “unlimited” differently from how most of us use the word. In practice, unlimited plans almost always come with a Fair‑Use Policy (FUP) and speed management rules. Understanding these is the difference between smooth streaming in a hotel lobby and a surprise crawl when you really need maps, ride‑hailing, or boarding passes.

This guide explains unlimited data throttling fair use in plain English. You’ll learn how throttling differs from deprioritisation, the typical caps you’ll see at home and while roaming, how to spot what’s happening on your line, and practical ways to avoid slowdowns on the road. We’ll also flag common gotchas—like hotspot limits and video shaping—that often hide in the small print. Planning a trip? We’ll show you how to pick a plan or travel eSIM with the right fair‑use terms for your usage, whether you’re heading to the US, Spain, Italy or across Western Europe.

What “Unlimited” Really Means Today

“Unlimited” almost never equals “full speed, all the time, for everything.” Most unlimited plans give you:

  • A bucket of high‑priority or full‑speed data (often called premium data)
  • A separate, often smaller allowance for hotspot/tethering
  • A Fair‑Use Policy that applies especially when roaming

Once you hit a threshold—monthly, weekly, or even daily—your speeds may be managed in two distinct ways:

  • Throttling: your line is capped to a fixed, low speed (for example 128 kbps, 512 kbps, or 1–3 Mbps)
  • Deprioritisation: your line stays “unlimited”, but drops in priority behind others when cells are busy

Carriers use both to keep networks stable. For travellers, the impact varies enormously by location and time of day. Understanding unlimited data throttling fair use before you buy prevents surprises once you land.

Fair‑Use Policies (FUP) in practice

FUPs are there to stop unusual consumption that affects other users. Typical patterns we see:

  • Domestic unlimited: 30–100 GB of “premium” data before deprioritisation may kick in
  • Roaming FUP: 5–30 GB at full speed in a foreign country, then slower speeds or deprioritisation
  • Daily high‑speed passes: 1–5 GB per day, then 1–3 Mbps until midnight
  • Hotspot allowances: 5–50 GB at full speed; after that, tethering may be banned or throttled

These are ranges, not promises—always check the plan page. For region‑specific options, browse Destinations or see Esim United States, Esim Spain, Esim France, Esim Italy, Esim Western Europe and Esim North America.

Hotspot and video shaping

Two limits people often miss:

  • Hotspot/tethering: Many “unlimited” plans only include a fixed hotspot allowance. After that, tethering may be slowed or blocked.
  • Video streaming: Some plans cap video at SD (480p) or HD (720p) using traffic shaping, regardless of your available bandwidth.

If you rely on hotspot for work or need HD/4K video, choose a plan that explicitly includes it.

Throttling vs Deprioritisation: Know the Difference

These terms are not interchangeable. Here’s how to recognise each and why it matters.

  • Throttling (speed cap)
  • What it is: A hard limit on your maximum speed once you hit a threshold.
  • When it triggers: After using your premium allowance, or after hotspot/video caps, or during traffic shaping rules.
  • How it feels: Consistently slow across locations and times—e.g., streams drop to SD, large downloads crawl, video calls struggle.
  • Typical numbers: 128–512 kbps for heavy throttles; 1–3 Mbps for lighter management.
  • Deprioritisation (queue position)
  • What it is: Your traffic moves lower in the queue only when the network is congested.
  • When it triggers: After a premium data threshold, or at busy cells (stadiums, stations, city centres at peak).
  • How it feels: Variable. Slow at busy times/places; normal or fast at quieter cells or off‑peak hours.
  • Typical signs: Speed tests vary widely by time and location; uploads may feel especially sluggish in crowds.

Why it matters: If you’re throttled, changing time or place won’t help much. If you’re deprioritised, moving one block, switching to a less loaded band/technology (e.g., 4G to 5G or vice versa), or waiting until off‑peak can restore high speeds.

Typical caps for travellers, by region

These are indicative ranges to help set expectations. Always review plan specifics on the product page.

  • United States / North America
  • Premium data on “unlimited”: commonly 30–100 GB before deprioritisation
  • Hotspot: 5–50 GB at full speed; then slower or disabled
  • Post‑FUP throttle: 128–512 kbps on some budget plans; others keep full speed but deprioritise
  • See Esim United States and Esim North America for travel‑friendly options.
  • Western Europe (EU/UK)
  • Domestic unlimited often very generous; EU‑roam FUPs of 5–35 GB are common
  • Daily unlimited passes: 1–5 GB/day at full speed then 1–3 Mbps
  • Hotspot limits vary; check if tethering is included in the FUP
  • See Esim Western Europe, plus country pages like Esim France, Esim Italy and Esim Spain.
  • Multi‑country trips
  • Regional eSIMs bundle fair‑use per country or per plan. Expect FUPs in the 5–30 GB range for short trips.
  • If you’re a power user, consider stacking plans or selecting tiers with higher premium data.

How to spot slowdowns (and prove what’s happening)

Use this quick, repeatable process:

  1. Check your usage in the app/portal - Look for “premium data used”, “hotspot used”, or “FUP reached” messages.
  2. Run two speed tests - One at a busy time (e.g., 6–8 pm), one off‑peak (early morning). Note ping, download, and upload. - Deprioritisation usually shows big time‑of‑day swings; throttling stays consistently capped.
  3. Toggle network modes - Switch 5G to 4G (LTE), or vice versa. Sometimes a less crowded 4G band beats congested 5G.
  4. Move 100–300 metres - Try a different street corner or side of the building. Cell boundaries and load change quickly.
  5. Test with and without VPN - A VPN won’t fix volume‑based throttles, but it can neutralise app‑specific shaping. Compare results.
  6. Try another device or SIM/eSIM if available - If the second line flies, your original line is likely managed; if both are slow, it’s probably coverage or congestion.

Pro tips: - Record screenshots of usage counters and speed tests. It’s useful if you escalate with support. - If tethering is slow but on‑device usage is fine, you’ve likely hit a hotspot cap.

How to avoid or minimise slowdowns

Follow these steps before and during your trip:

  1. Choose the right plan tier - Prefer plans that advertise “premium data” amounts and explicit hotspot allowances. - For multi‑country trips with heavy usage, consider regional plans like Esim Western Europe or Esim North America with generous FUPs.
  2. Match the plan to your destination - In the US, capacity varies by city and carrier. Travel‑specific options on Esim United States are tuned for visitors. - In Europe, check country pages—Esim France, Esim Italy, Esim Spain—for local FUP details.
  3. Keep hotspot usage intentional - Download large files over hotel Wi‑Fi. - If you must tether, reduce video quality and pause cloud backups.
  4. Optimise your apps - Turn off auto‑updates and background sync while on mobile data. - Pre‑download offline maps and playlists before you fly. - Set streaming apps to 480p/720p on mobile; switch back to higher quality on Wi‑Fi.
  5. Manage your radios - If 5G is patchy, force 4G/LTE to avoid sticky, congested NSA 5G cells. - If upload is critical (video calls), test at different times or locations to dodge deprioritised uplink.
  6. Carry a fallback - Add a second eSIM from a different network in your dual‑SIM phone. When one is congested, switch. - For teams, pooled or centrally managed data on For Business helps ensure reliable capacity.
  7. Read the small print - Look for words like “after X GB, speeds reduced to 1 Mbps,” “video streams at SD,” or “hotspot 10 GB”.

Pro tips: - City centres at lunchtime and early evenings are peak hours. Plan uploads and large downloads for mornings. - Rural areas may have excellent peak speeds but fewer carriers. Keep a secondary eSIM for redundancy.

Heavy‑use and business travellers

If you’re syncing large files, running live demos, or supporting a team:

  • Pick plans with stated premium data allowances and business‑grade hotspot limits.
  • Use dual connectivity: one line for primary data, another as a hot backup.
  • Consider centrally managed solutions via For Business for pooled data and support. Channel or travel partners can explore the Partner Hub.

Checklist: Before you buy an “unlimited” plan

  • Is there a premium data allowance before deprioritisation? How many GB?
  • What is the throttle speed after the FUP is reached?
  • How much hotspot/tethering is included at full speed? What happens after?
  • Is video streamed at a fixed resolution on mobile data?
  • Are the FUP and hotspot limits different when roaming?
  • Can I view real‑time usage counters in an app or portal?
  • What networks and bands are supported at my destination?
  • Does the plan suit my itinerary? Check regional options on Destinations.

FAQ

Q: What’s the difference between throttling and deprioritisation? A: Throttling is a fixed speed cap imposed after you hit a limit (e.g., 512 kbps). Deprioritisation only lowers your queue position during congestion; speeds can still be fast at quieter times or places.

Q: How many gigabytes can I use before I’m slowed on “unlimited” plans? A: It varies by plan and region. Common thresholds are 30–100 GB of premium data domestically, and 5–30 GB when roaming on travel eSIMs. Some plans throttle after that; others simply deprioritise.

Q: Does a VPN bypass throttling or deprioritisation? A: No for volume‑based throttling and deprioritisation—they apply regardless of encryption. A VPN may help only if the network is shaping specific apps (e.g., video), not if you’ve hit a usage cap.

Q: Why is my data slow even before I hit a cap? A: Likely congestion, weak signal, or sub‑optimal bands. Try another location, switch between 5G and 4G, and test at off‑peak times. Compare results to distinguish network load from policy limits.

Q: Is hotspot included in unlimited plans? A: Often in limited amounts (e.g., 5–50 GB). After the hotspot allowance, tethering may be throttled or blocked. Always check the hotspot line item separately from general data.

Q: Will 5G keep me safe from slowdowns? A: 5G can deliver higher peak speeds, but policy still applies. You can still be deprioritised on a busy 5G cell or throttled after hitting a FUP threshold.

Next step: Plan your trip with the right fair‑use and speed terms by browsing regional options on Destinations.

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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 & 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
APN Settings for eSIM Data (iOS & Android): Find, Edit, Verify

APN Settings for eSIM Data (iOS & Android): Find, Edit, Verify

Travelling with an eSIM should be as simple as scanning a QR code and going online. Most of the time it is. When it isn’t, the culprit is often the APN (Access Point Name) — the tiny configuration that tells your device how to reach the mobile data network. This guide shows you exactly where to find APN settings on iOS and Android (including popular vendor skins), what to fill in, and how to verify it’s working with quick tests. We’ll also cover DNS tweaks that can help on the road and a clean troubleshooting flow to get you connected fast.Whether you’re heading to the US, France, Italy, Spain or hopping around Esim Western Europe and Esim North America, correct APN settings are the difference between smooth streaming and a blank browser. Keep your provider’s APN values handy, follow the steps below, and you’ll be back online in minutes. For plan options by country, see our Destinations.What is an APN and why it matters for eSIM dataAPN (Access Point Name) defines the gateway your device uses to access mobile internet.With eSIMs, APN is often auto‑provisioned. Sometimes you must enter it manually.If the APN is missing or wrong, you’ll have signal bars but no data.You’ll typically only need to enter: - APN: a short string (e.g., “internet” or provider‑specific) - Username/Password: usually blank - APN Type: “default,supl” - Protocol: IPv4/IPv6MMS and voice settings are not required for data‑only eSIMs.Before you start: quick checklisteSIM installed and activated on your deviceMobile Data turned onThe eSIM set as the active line for Mobile DataData Roaming on (required when abroad, and sometimes even domestically with certain carriers/MVNOs)Wi‑Fi off while testing (to ensure you’re using mobile data)APN values from your eSIM provider readyTravelling soon? Explore country packs such as Esim United States, Esim France, Esim Italy and Esim Spain.iOS: Find and edit APN settings (iPhone/iPad)Note: On many carriers, iOS hides APN fields because settings are auto‑installed. If you don’t see the menu below, your carrier may not allow manual changes. In that case, re‑installing the eSIM or applying a carrier settings update usually fixes it.Step‑by‑step: 1. Open Settings. 2. Tap Mobile Data (or Cellular). 3. Tap your eSIM line (labelled with the plan name). 4. Tap Mobile Data Network (or Cellular Data Network). - If this menu is missing, APN is likely auto‑configured. Try a carrier settings update: Settings > General > About (wait for an update prompt). 5. Under Mobile Data, fill in: - APN: enter exactly as provided - Username/Password: leave blank unless specified 6. Personal Hotspot section (if present, may mirror the data APN): - APN: same as Mobile Data (only if instructed by your provider) 7. Go back; iOS saves automatically. Toggle Airplane Mode off/on to refresh.Pro tips (iOS): - Correct APN spelling matters. Avoid extra spaces. - If you changed APN and nothing happens, restart the phone. - To verify connectivity, open Safari and visit: - http://neverssl.com (loads plain HTTP if you truly have data) - http://captive.apple.com (should show “Success”) - Dual SIM? Ensure your travel eSIM is selected under Mobile Data > Mobile Data.Android: Find and edit APN settings (by brand)The path is similar across Android, but menu names vary. After adding a new APN, always save and select it.Google Pixel / Android (near‑stock)Settings > Network & Internet > SIMs.Choose your eSIM.Access Point Names.Tap + (Add) or the plus icon.Fill: - Name: any label (e.g., “Travel eSIM”) - APN: as provided - Username/Password: blank unless specified - APN type: default,supl - APN protocol: IPv4/IPv6 - MCC/MNC: leave as‑is (auto from the SIM)Save (⋮ menu > Save).Tap the new APN to select it.Toggle Airplane Mode off/on.Samsung Galaxy (One UI)Settings > Connections > Mobile networks > Access Point Names.Select your eSIM if prompted.Tap Add.Enter APN details (as above).Tap ⋮ > Save, then select the new APN.Toggle Airplane Mode or restart.Xiaomi/Redmi/POCO (MIUI/HyperOS)Settings > SIM cards & mobile networks.Choose your eSIM.Access Point Names.New APN (+).Fill in details, Save, then select it.Reconnect mobile data.OPPO/realme/OnePlus (ColorOS/OxygenOS)Settings > Mobile network (or SIM & network).Choose the eSIM > Access Point Names.Add APN, fill details, Save, select it.Toggle Airplane Mode.Huawei (EMUI)Settings > Mobile network > Mobile data.SIM management > select eSIM.Access Point Names > Add.Fill details, Save, select, and reconnect.Pro tips (Android): - If you don’t see APN, ensure the eSIM is enabled and set as the data SIM. - Use “Reset to default” (⋮ menu) if you’ve tried multiple APNs. - Data Saver or Battery Saver can block background data; disable while testing. - Private DNS can affect captive portals; set to Off/Automatic while activating, then re‑enable.The exact fields to fill (and what to leave alone)APN: Required. Enter exactly as provided.Username/Password: Leave blank unless specified.APN Type: Use default,supl. Only add dun if instructed (for tethering on certain carriers).APN Protocol / Roaming Protocol: IPv4/IPv6 is ideal. Switch to IPv4 if you see IPv6‑related issues (rare).MMSC/MMS Proxy/MMS Port: Not needed for data‑only plans.Bearer: Unspecified.MVNO Type/Value: Leave as‑is unless your provider specifies.MCC/MNC: Auto‑filled from the SIM. Do not change.Formatting gotchas: - Case is usually not sensitive, but use the exact case provided. - Avoid trailing spaces before/after the APN string.Verify your APN works: simple, reliable testsDo this with Wi‑Fi off.Check the status bar: you should see 3G/4G/LTE/5G with data arrows blinking.Open a non‑HTTPS test page: - http://neverssl.com or http://example.com - If you’re behind a captive portal (hotel/airport Wi‑Fi style, unusual for mobile), you’ll be redirected.Try https sites: - https://1.1.1.1/help — loads Cloudflare’s connectivity page - A map app (tiles should load quickly)Optionally run a speed test after basics work.If still no data: - Toggle Airplane Mode - Restart the device - Re‑select your APN - Ensure Data Roaming is enabledDNS tips for travellersMost eSIMs work best with the carrier’s DNS. However, if browsing feels slow or certain sites won’t resolve:Android Private DNS:Settings > Network & Internet > Private DNSTry dns.cloudflare.com (Cloudflare) or dns.google (Google). If it breaks captive portals, switch back to Automatic.iOS:iOS does not offer per‑cellular DNS changes in Settings. For mobile data, you typically use the carrier’s DNS. If you must override, a configuration profile or third‑party app is required — not recommended while roaming.APN DNS fields (if visible): Leave blank unless your provider specifies values.If switching DNS worsens connectivity, revert to Automatic/Off and retest.Common errors and fast fixesAPN menu missing (iOS):The carrier locks APN edits. Update carrier settings (Settings > General > About), restart, or re‑install the eSIM.APN won’t save or won’t stay selected (Android):Delete other APNs, save yours, then select it. Reboot.Signal but no data:Wrong APN or APN type; re‑enter carefully.Data Roaming off; turn it on.Low Data Mode/Data Saver on; disable temporarily.Dual SIM conflict; set the correct SIM for Mobile Data and turn off “Allow Mobile Data Switching” until stable.Stuck on 3G/edge speeds:Network mode forced to 3G; set to 4G/5G Auto.Weak local coverage; try moving near a window or outdoors, or switch network operator manually if allowed.After long flights:Toggle Airplane Mode.Check date/time set automatically — incorrect time can affect auth with some networks.Region-specific notes for roaming eSIMsMany roaming profiles require Data Roaming enabled, even if you’re physically in your home country.Some MVNOs in Europe connect via partner networks; keep network selection on Automatic for best results.For multi‑country trips, consider bundles like Esim Western Europe or Esim North America to avoid reconfiguring APNs between borders.For country‑specific plans, see Esim United States, Esim France, Esim Italy, and Esim Spain. Plan pages include any APN notes unique to that destination.For teams and partnersSetting up dozens of devices for a trip or event? Our business team can pre‑stage eSIMs and provide APN guidance per route and device fleet.Explore solutions For Business.Existing resellers and travel partners can access technical collateral in the Partner Hub.FAQ: APN settings for eSIM1) What APN should I use with my Simology eSIM? - Use the APN shown during activation or in your confirmation email/portal. If none is shown, your device should auto‑provision it.2) I can’t see the APN menu on iPhone. What now? - Some carriers lock APN edits on iOS. Update carrier settings (Settings > General > About), restart, or re‑install the eSIM. If it’s still hidden, the APN is managed automatically.3) Do I need MMS settings for a data‑only eSIM? - No. MMS fields (MMSC, proxy, port) are not required for data‑only plans. Only set them if your plan explicitly includes MMS.4) Should APN type include “dun” for hotspot? - Usually no. Start with default,supl. Add dun only if your provider instructs you and tethering fails.5) IPv4 or IPv6? - Choose IPv4/IPv6 (dual‑stack) where possible. If you encounter connectivity issues with certain apps, try IPv4 only on Android.6) Will changing APN affect my primary (home) SIM? - No, APNs are set per SIM profile. Just be sure you’re editing the eSIM line used for travel.Next step: Choose your destination and get the right eSIM with clear APN guidance on the plan page. Start at Destinations.

31 Oct 2025
Secure Messaging Abroad: iMessage, WhatsApp, Signal — Best Practices

Secure Messaging Abroad: iMessage, WhatsApp, Signal — Best Practices

Travelling adds friction to your private chats: new SIMs, patchy roaming, sketchy Wi‑Fi and the constant risk of loss or theft. This guide distils what actually matters for secure messaging travel across iMessage, WhatsApp and Signal. You’ll learn how to keep end-to-end encryption intact while changing networks and devices, how to avoid account takeovers during SIM swaps, how to set up encrypted backups you can actually restore, and when to use disappearing messages. We’ll also cover dual‑SIM/eSIM roaming so you can keep your home number for authentication while using a local data plan without bill shock.If you only do three things before you fly: lock your accounts with registration/2‑step verification, enable encrypted backups (or turn backups off if you can’t encrypt), and keep your primary number reachable for re‑activation codes using a travel eSIM for data. Everything below shows you exactly how.Browse regional eSIM options at Destinations or go straight to Esim Western Europe, Esim United States and Esim North America to keep mobile data secure on the move.The essentials: how secure are iMessage, WhatsApp and Signal?End-to-end encryption (E2EE): All three encrypt message content in transit and on servers.Backups are the weak link:iMessage: On-device is E2EE. If you sync with iCloud, enable Apple’s Advanced Data Protection (ADP) to keep iCloud Messages end‑to‑end encrypted; otherwise Apple holds keys.WhatsApp: Chats are E2EE, but you must turn on E2EE backups to protect iCloud/Google Drive backups.Signal: No cloud backups. You can create local encrypted backups (Android) with a passphrase.Metadata: Who you talk to and when is more exposed than message content (highest protection on Signal; WhatsApp and iMessage retain more metadata).Device security matters: A strong device passcode/biometrics and encrypted storage are non‑negotiable.SMS fallback is not secure: Avoid sending SMS/MMS when data is spotty; ensure apps don’t silently fall back.Pro tip: Keep mobile data via a travel eSIM to maintain E2EE reliably instead of hunting for risky public Wi‑Fi. See Esim France, Esim Spain or Esim Italy if you’re heading to Europe.Before you fly: secure messaging travel checklistDo these at home on a stable connection with access to your primary number.iMessage/FaceTime (Apple)Update iOS/iPadOS/macOS to the latest version.Settings > Your Name > Password & Security: - Turn on two‑factor authentication for your Apple ID. - Consider Advanced Data Protection for end‑to‑end encrypted iCloud data (store recovery key or set a recovery contact).Settings > Messages: - Ensure iMessage is On. - Send & Receive: Add your Apple ID and your phone number. Prefer using your Apple ID for reachability while travelling.Settings > Messages > Send as SMS: Leave On for emergencies, but note SMS isn’t encrypted; watch for green bubbles.Optional for high‑risk users: iMessage Contact Key Verification (iOS 17.2+). Verify contacts and receive alerts if keys change.Pro tips: - On dual‑SIM, choose which number iMessage uses in Settings > Messages > Send & Receive. Keep your home number linked but use data on your travel eSIM. - Avoid signing out of Apple ID while abroad; it can trigger re‑verification you may not receive if your home SIM is offline.WhatsAppUpdate WhatsApp.Settings > Account > Two‑step verification: - Turn on and set a unique PIN. Add an email for recovery. This is your shield against SIM‑swap takeovers.Settings > Chats > Chat backup: - Turn on End‑to‑end encrypted backup. - Set a strong backup password or store the 64‑digit key securely. Lose it and your backup is irrecoverable.Settings > Account > Security alerts: - Turn on Security notifications to be alerted when contacts’ security codes change.Multi‑device: - Consider linking a secondary device before travel (Linked devices). If your primary is lost, you can still access chats on companions.Pro tips: - Never share your WhatsApp 6‑digit code. WhatsApp support will never ask for it. - If connectivity is unreliable, disable automatic media downloads to reduce data use.SignalUpdate Signal.Profile > Settings > Account: - Registration lock/PIN: Enable. This prevents someone registering your number on another device without the PIN.Backups: - iOS: No cloud backups. Transfers require device‑to‑device or QR migration. - Android: Settings > Chats > Chat backups: Create an encrypted local backup; write down the 30‑digit passphrase and store it offline.Safety numbers: - Open each critical contact > Verify safety number (scan QR or compare digits). Re‑verify after device changes.Privacy: - Enable Sealed Sender and always‑relay calls if you want to reduce metadata exposure. - Turn on disappearing messages by default for travel chats.Pro tips: - Signal doesn’t store your chats in the cloud. Test your restore process before you go. - Use a screen lock inside Signal for an extra layer (Settings > Privacy > Screen lock).Device and carrier hygieneSet a strong device passcode, enable biometrics, and turn on “Erase data after 10 failed attempts” if available.Enable Find My (Apple/Google) and test remote lock/wipe.Ask your carrier to add a SIM‑swap/port‑out lock before travel.Photograph and securely store your SIM/eSIM details and QR codes.Dual‑SIM and eSIM: roam smart, keep your number safeTravellers increasingly use dual‑SIM phones with a physical home SIM for identity/OTP and a travel eSIM for data. Done right, you get cheap data without breaking your secure messaging.Keep the home number active for SMS re‑verification while avoiding data roaming fees:iPhone: Settings > Mobile Data:Set your travel eSIM as “Mobile Data”.Turn off “Data Roaming” on the home line.Leave Calls/SMS enabled on the home line so you can still receive OTPs.Android: Settings > Network & Internet > SIMs:Use the travel eSIM for data; disable data on the home SIM; keep SMS on.iMessage:In Send & Receive, ensure your Apple ID is selected so messages can continue over data even if your phone number changes status.WhatsApp and Signal:Both tie identity to your phone number. Keeping the home SIM reachable prevents account reactivation headaches.Pro tip: Use regional data plans so you don’t swap eSIMs at each border. For example, Esim Western Europe covers multiple countries; for transatlantic trips, pair it with Esim North America.For destination‑specific coverage and pricing, see Destinations or pick plan pages like Esim United States, Esim France, Esim Spain or Esim Italy.Account transfer and device loss: minimise riskIf your phone is lost or stolen:General steps (immediately)Use Find My/Find My Device to lock or erase.Contact your carrier to suspend the line to block OTP interception.Move your number to an eSIM or replacement SIM as soon as possible.WhatsAppGet a new SIM with the same number and install WhatsApp to re‑register; this logs out the old device.If you cannot get a SIM quickly, email support@whatsapp.com with the subject “Lost/Stolen: Please deactivate my account” including your number in full international format.Restore from your end‑to‑end encrypted backup using your password/key.SignalOnce you have your number back, install Signal and register; Registration Lock will require your PIN (good).On Android, restore from your local encrypted backup with your passphrase.Ask contacts to verify safety numbers again.iMessageRemove the device from your Apple ID at appleid.apple.com.If necessary, deregister your phone number from iMessage at Apple’s deregistration page so new SMS/messages reach you once you switch devices.Pro tips: - Don’t publish your travel dates and number changes publicly; it aids social‑engineering. - Store your backup passwords/keys offline (paper or a secure password manager with offline access).Backups, sync and what to encryptiMessageBest security: Enable Advanced Data Protection so Messages in iCloud stay end‑to‑end encrypted. Keep your recovery key/contact safe.If you can’t use ADP, consider turning off Messages in iCloud during sensitive travel to reduce exposure, but you’ll lose cross‑device message sync.WhatsAppAlways enable end‑to‑end encrypted backups with a strong password or 64‑digit key.Test a restore before you leave so you know the password works.Avoid third‑party “transfer” tools that may break security.SignaliOS: Use Signal’s device‑to‑device transfer when replacing phones; it’s encrypted and local.Android: Use the built‑in encrypted local backup only; keep the passphrase offline.General rule: If a backup isn’t end‑to‑end encrypted with a key only you know, assume your chat content could be exposed.Disappearing messages and minimising metadataTurn on disappearing messages for travel chats:WhatsApp: Per chat > Disappearing messages > set a short timer (e.g., 24 hours) and “Default message timer” for new chats.Signal: Per chat or global default; add “View‑once” for sensitive media.iMessage: No true disappearing messages. Consider sending via Notes collaboration or avoid persistent media; delete threads you no longer need.Limit message previews on lock screen:Show “Only when unlocked” to prevent shoulder‑surfing.Reduce metadata:Prefer Signal for highly sensitive contacts.In WhatsApp, keep “Last seen/Online” limited to “Nobody” or “My contacts”.Avoid large group chats that leak membership and activity patterns.Pro tip: Disappearing messages don’t prevent screenshots or backups by your contacts. Share only what you’re comfortable losing control of.Public Wi‑Fi vs mobile dataPrefer mobile data for secure messaging. E2EE protects content on any network, but captive portals and rogue hotspots can still trick you into risky behaviour and leak metadata.If you must use Wi‑Fi:Validate the network name with staff.Use a reputable VPN, especially on shared or open networks.Disable auto‑join for public SSIDs and forget networks after use.Travel eSIM data is usually the simplest, safest path. Choose regional plans like Esim Western Europe or country plans such as Esim United States. Teams and frequent travellers can streamline provisioning via For Business or explore partnership options in our Partner Hub.How to set up secure messaging for travel: a quick startUpdate your phone OS and all messaging apps.Lock your accounts: - iMessage: Turn on two‑factor; consider ADP. - WhatsApp: Enable two‑step verification and security notifications. - Signal: Enable Registration Lock (PIN).Secure your backups: - WhatsApp: Turn on E2EE backups and record the password/key. - Signal (Android): Create and store the encrypted backup + passphrase. - iMessage: Enable ADP or turn off Messages in iCloud if you can’t.Configure dual‑SIM: - Set travel eSIM for data; keep home SIM for SMS; disable home data roaming.Set privacy defaults: - Disappearing messages on (Signal/WhatsApp). - Lock‑screen previews off or “When unlocked”.Test the recovery path: - Restore a WhatsApp backup on a spare device. - Verify Signal safety numbers with a trusted contact. - Confirm you can receive an SMS on the home line while data uses eSIM.FAQQ: Will iMessage work abroad without SMS? A: Yes, iMessage uses data. However, re‑activation can require an SMS. Keep your home SIM able to receive texts while using a travel eSIM for data.Q: Is WhatsApp secure enough for travel? A: With two‑step verification and end‑to‑end encrypted backups enabled, yes for most travellers. For maximum privacy (less metadata), prefer Signal.Q: Can I switch phone numbers while travelling? A: Avoid changing the number tied to WhatsApp/Signal mid‑trip; it triggers re‑registration. If you must, use the in‑app “Change Number” (WhatsApp) and notify contacts; re‑verify safety numbers on Signal.Q: Can I use WhatsApp on two phones? A: Yes. You can link a second phone as a companion device. For resilience, link it before travel so you’re not locked out if your primary is lost.Q: Do disappearing messages make me bulletproof? A: No. They reduce residual data but don’t stop screenshots or photos. Treat them as cleanup, not a guarantee.Q: Does a VPN make messaging more secure? A: It doesn’t add encryption to E2EE chats, but it protects against rogue Wi‑Fi and hides traffic from local networks. Still prefer mobile data when possible.Next step: Pick a regional eSIM to keep your secure messaging online without roaming fees. Start with Destinations or choose a bundle like Esim Western Europe.

31 Oct 2025