New York is a hard stress test for any mobile network. We spent two days measuring real‑world performance at JFK and Newark (EWR) airports, across busy Midtown blocks, and on multiple subway platforms. Our aim: practical guidance for travellers deciding between airport Wi‑Fi and 5G, whether Midtown crowds crush throughput, and how usable platforms are while you wait for a train. This report prioritises lived experience over lab peaks. We ran multiple tests at commuter peak and off‑peak, indoors and outdoors, and we compared against three Midtown hotel Wi‑Fi networks. You’ll find a summary of results, location‑by‑location notes, and a copy‑paste CSV so you can inspect the data. If you’re planning a US trip, pair this with an eSIM from our Esim United States range or multi‑country cover via Esim North America. For other countries and future comparisons, browse our Destinations hub.

What we tested and how

Devices and profiles

• Two recent 5G phones (Sub‑6 with C‑band and mid‑band support).
• eSIM profiles on mainstream US networks plus an international roaming eSIM.
• Tests performed with VPN off, battery above 40%, and mobile data preference set to 5G Auto.

Locations and times

• Airports: JFK Terminal 4 departures (check‑in, security, two gate areas) and Terminal 8 concourse; EWR Terminal A (new concourse) and Terminal C food court.
• Midtown: Times Square (7th Ave/45th), Bryant Park, Herald Square, Grand Central exterior, and a 33rd St office lobby.
• Subway platforms: Times Sq–42 St (A/C/E and 1/2/3), Grand Central–42 St (4/5/6), 34 St–Herald Sq (B/D/F/M/N/Q/R/W), and 14 St–Union Sq (L/4/5/6).
• Time windows: weekday morning commute (07:30–09:30), lunch (12:00–14:00), evening (17:00–19:00), late night (22:00–23:00).

Method

• Three runs per spot via Speedtest app; we logged downlink, uplink, latency, jitter, signal strength, and RAT (5G/4G).
• Where venue Wi‑Fi existed (free airport Wi‑Fi and three Midtown hotels), we ran two Wi‑Fi tests per spot on 5 GHz networks.
• We averaged per spot and noted congestion spikes, captive portals, and any dead zones.

Headline results at a glance

• Airports: JFK 5G mid‑band generally fast and consistent (150–400 Mbps down; 15–50 Mbps up; 18–35 ms latency). EWR A/C similar or slightly lower (120–320 Mbps down). Free airport Wi‑Fi varied widely (25–180 Mbps down), with higher latency and occasional captive portals.
• Midtown streets: Solid mid‑band 5G when outdoors (80–350 Mbps down) but congestion dips around Times Square at lunchtime and pre‑theatre, where some runs fell to 20–60 Mbps. Latency on mobile stayed sub‑40 ms even under load.
• Inside buildings: Lobbies and deep interiors dropped to 4G or low‑band 5G in some cases; speeds ranged 10–80 Mbps down with higher jitter.
• Subway platforms: Coverage is expanding; most major stations tested had usable LTE/5G on platforms. Typical speeds 8–90 Mbps down, 2–25 Mbps up, with sporadic “No service” pockets in older sections. In‑tunnel between stations remains hit‑and‑miss.
• Hotel Wi‑Fi vs 5G: Two hotels delivered 30–60 Mbps with 60–120 ms latency and aggressive captive portals; one business‑class property delivered 120–220 Mbps down but still 30–60 ms latency. 5G usually beat Wi‑Fi for upload and latency, and matched or exceeded download at peak times.

Location‑by‑location findings

JFK Airport (Terminal 4 and 8)

• Check‑in and security halls (T4): 5G mid‑band was strong across operators with 180–320 Mbps down and 15–40 Mbps up. Free Wi‑Fi was usable (40–120 Mbps down) but required captive portal acceptance; latency 35–70 ms.
• Gate areas (T4 B concourse): Best mobile results of the airport, frequently 250–400 Mbps down on mid‑band, and steady 20–45 Mbps up. Video calls were smooth even with background syncing. Wi‑Fi here fluctuated from 25 to 110 Mbps depending on nearby users.
• Terminal 8 concourse: Slightly lower medians (150–260 Mbps down). We noted uplink dips in the 10–20 Mbps range at peak boarding times.

Pro tips: - If Wi‑Fi captive portals fail, toggle Wi‑Fi off and rely on 5G for faster onboarding and lower latency. - Avoid deep corners behind pillars near gates; step into the main concourse for better 5G mid‑band.

Newark Liberty (EWR Terminal A and C)

• Terminal A (new building): Consistent mid‑band 5G with 160–300 Mbps down, 18–40 Mbps up, 20–32 ms latency. Free Wi‑Fi delivered 60–150 Mbps down in open seating areas, but dipped under 20 Mbps near crowded food zones.
• Terminal C food court: Higher contention; mobile still acceptable (120–220 Mbps down). Wi‑Fi varied the most here (10–90 Mbps), with notable jitter during peak meal windows.

Traveller takeaway: - At both airports, mobile 5G was the safer default for uploads (docs to cloud, messaging attachments). Use Wi‑Fi only when you need to save data or if you find an uncrowded access point.

Midtown Manhattan streets and hotels

• Streets and plazas: Outdoor mid‑band 5G carried well along 6th and 7th Avenues. Lunchtime at Times Square saw the steepest drops; several tests fell below 50 Mbps down due to crowd density. Even then, latency held under ~45 ms, keeping maps, rideshare, and messaging responsive.
• Lobbies and lifts: We saw handoffs to low‑band 5G or LTE with downlink in the 10–40 Mbps range. Uploads were the pain point inside (often <10 Mbps), affecting cloud photo backup and large email sends.
• Hotels (three properties):
• Business hotel near Bryant Park: 120–220/20–40 Mbps with predictable performance but higher latency (30–60 ms) than mobile.
• Two mid‑range hotels near Herald Square and Times Square: 20–60/5–15 Mbps, captive portals, device quotas, and occasional throttling at night.
• Versus 5G: Mobile 5G beat or matched hotel Wi‑Fi on upload and latency in all three cases, and beat two hotels on download.

Pro tips: - If your video call matters, tether from 5G in Midtown rather than relying on mid‑range hotel Wi‑Fi. - Try a window‑side spot for stronger 5G when indoors; walls and metallic façades can heavily attenuate mid‑band.

Subway platforms: coverage and speed reality

• Platform coverage is expanding station by station. We found usable LTE/5G at Times Sq–42 St, Grand Central–42 St, Herald Sq, and Union Sq platforms.
• Typical results: 8–90 Mbps down, 2–25 Mbps up, 30–60 ms latency. Newer stations and renovated sections skewed higher.
• Dead zones: Some corners and transfer corridors still drop to “No service” or edge‑LTE. Between stations, expect intermittent service; do not rely on continuous connectivity for real‑time navigation or calls.

Platform tips: - Download offline maps before you go. - Send large attachments while still on the platform; uplink often collapses once the train departs. - If you need a hotspot, stand near stairwells or open mezzanines where signals tend to be stronger.

5G vs hotel Wi‑Fi: which should you pick?

Use mobile 5G when: - You need low latency (video calls, live collaboration). - Uploads matter (cloud backups, sending docs). - Wi‑Fi is captive‑portal‑gated or throttled.

Use Wi‑Fi when: - You’re preserving roaming data or on a tight cap. - You can access a premium or business‑grade SSID. - You’re downloading large app updates off‑peak.

Checklist to decide in 30 seconds: 1. Test ping and upload (not just download). If latency >60 ms and upload <5 Mbps on Wi‑Fi, switch to 5G. 2. If your phone shows weak 5G indoors, move closer to windows or try Wi‑Fi. 3. Avoid VPN during tests; it skews latency. Re‑enable after. 4. Disable low‑power or data‑saver modes for accurate benchmarking. 5. For sensitive work, use personal 5G + VPN rather than shared hotel Wi‑Fi.

How to replicate our nyc speed test mobile

Step‑by‑step: 1. Prepare your device: update OS, ensure 5G Auto is on, disable VPN, and charge >40%. 2. Install two speed apps (e.g., Speedtest and Fast). Close all other network‑heavy apps. 3. At each spot, run three tests on mobile data, 30–60 seconds apart. Note RAT (5G/4G) and signal bars/dBm if available. 4. If Wi‑Fi exists, join the main SSID, complete any captive portal, and run two tests. 5. Log results in a simple CSV with: datetime (local), location, lat/long (approx), network tech, down/up/latency/jitter, signal_dBm, and notes. 6. Airplane mode toggle between locations to force a clean network attach.

Pro tips: - Test at different times; NYC congestion is time‑dependent. - Stand still during tests; movement changes cell selection and beamforming. - For consistent comparisons on future trips (e.g., Paris, Milan, Barcelona), repeat the same method and compare with our Esim France, Esim Italy, and Esim Spain travellers’ notes, or cover a broader trip with Esim Western Europe.

Traveller recommendations

• Primary SIM choice: For single‑country travel, a US eSIM is simplest; see our Esim United States options with generous high‑speed data. Multi‑city North America itinerary? Use Esim North America.
• Business travellers: Consider a plan with strong uplink and hotspot allowance for Midtown calls and airport uploads. If you manage a team, our For Business page outlines pooled data and spend controls.
• Partners and events: If you operate venues or events in NYC and want predictable connectivity for attendees, collaborate via our Partner Hub.
• Pre‑trip planning: Check other city reports on Destinations to benchmark expectations.

Dataset: NYC speed test mobile (CSV sample)

Below is a sample of our log. Header row included; units are Mbps for throughput and ms for latency/jitter. Locations are approximate to protect privacy.

datetime_local,location,venue,lat,lon,network,down_mbps,up_mbps,latency_ms,jitter_ms,signal_dbm,notes 2025-09-17 08:05,JFK T4,Check-in Hall,40.6438,-73.7820,5G,286,32,23,6,-93,Free Wi‑Fi busy; mobile steady 2025-09-17 08:18,JFK T4,Security Exit,40.6436,-73.7817,5G,254,28,21,5,-95,High footfall 2025-09-17 09:02,JFK T4 B,Gate Area,40.6446,-73.7810,5G,372,41,19,4,-89,Best results at B concourse 2025-09-17 10:11,JFK T8,Concourse,40.6460,-73.7847,5G,198,17,28,8,-96,Uplink dip near boarding 2025-09-17 12:32,Times Square,7th Ave/45th,40.7590,-73.9855,5G,62,14,37,11,-101,Heavy congestion lunchtime 2025-09-17 13:05,Herald Square,Outdoor,40.7496,-73.9870,5G,181,24,29,7,-97,Consistent mid‑band 2025-09-17 14:22,Bryant Park,Outdoor,40.7536,-73.9832,5G,212,27,24,6,-94,Good outdoors 2025-09-17 15:40,Hotel A,Lobby Wi‑Fi,40.7525,-73.9850,Wi‑Fi,56,9,74,18,NA,Captive portal present 2025-09-17 16:10,Hotel B,Room Wi‑Fi,40.7506,-73.9872,Wi‑Fi,138,31,41,10,NA,Business SSID stable 2025-09-17 17:55,Grand Central,Exterior,40.7527,-73.9772,5G,168,22,26,7,-98,Pre‑commute steady 2025-09-17 18:22,34 St–Herald Sq,Platform,40.7496,-73.9879,5G,48,11,39,12,-104,Usable on platform 2025-09-17 18:45,Times Sq–42 St,Platform,40.7553,-73.9870,LTE,22,6,52,16,-106,Crowded; LTE fallback 2025-09-17 19:08,Union Sq–14 St,Platform,40.7359,-73.9903,5G,74,18,33,9,-100,Good for messaging/calls 2025-09-17 21:15,EWR Terminal A,Concourse,40.6895,-74.1745,5G,264,35,24,6,-92,Low contention late 2025-09-17 21:40,EWR Terminal C,Food Court,40.6924,-74.1787,5G,182,21,28,9,-97,Evening crowd

For requests to use or extend this dataset (e.g., adding venues or dates), get in touch via our Partner Hub.

FAQ

• Is mobile 5G faster than airport Wi‑Fi in NYC?
  Usually, yes—especially for uploads and latency. Download speeds can be similar when Wi‑Fi is uncongested.
• Will my phone work on subway platforms?
  At major stations, yes, with usable LTE/5G on platforms. Expect gaps in corridors and between stations.
• What speeds should I expect in Times Square?
  Outdoors on 5G, 50–250 Mbps is typical, but lunch and pre‑theatre peaks can dip below that due to crowd density.
• Is hotel Wi‑Fi reliable for video calls?
  It varies. Business‑grade Wi‑Fi can work, but many hotels have higher latency or throttling. Tethering over 5G is often smoother.
• Do I need a US‑specific eSIM for best speeds?
  It helps. A local plan from Esim United States typically provides better performance and predictability than pure roaming. If you’re visiting Canada too, consider Esim North America.
• Where can I find more city speed tests?
  Browse our evolving library on Destinations. Planning Europe next? See Esim Western Europe for multi‑country coverage.

Next step: Choose your US plan and be ready for NYC’s networks with Esim United States.

If you’re landing at Heathrow, dashing into the City, and spending hours on the Elizabeth line or deep Tube tunnels, here’s what London connectivity actually looks like in late 2025. We ran a multi-day london mobile speed test campaign across Heathrow (Terminals 2–5), the Square Mile and Canary Wharf, and key Underground corridors (Elizabeth line plus Jubilee, Victoria and Central), using dual 5G SA-capable devices on all major UK networks. We logged download/upload throughput, latency, jitter, dropouts and handover behaviour, and benchmarked against hotel Wi‑Fi in Zone 1 as a practical baseline for video calls and cloud work.

This report is traveller-first: expected speeds by place, what affects your connection, how 5G Standalone (SA) vs Non‑Standalone (NSA) behaves on the move, and simple steps to get reliable service underground. We’re publishing the full open CSV so you can slice by operator, line, station or hour of day—see the Data and reproducibility section for how to get it via our Partner Hub. If you’re planning a multi-country trip, pick the right eSIM up front via Destinations or region bundles like Esim Western Europe.

How we tested

• Period: 7–11 October 2025 (Q4 snapshot)
• Devices: iPhone 15 Pro and Pixel 8 Pro (both 5G SA/NSA capable)
• Profiles: UK eSIM via Simology (multi-network testing), plus roaming checks on an EU plan (see Esim Western Europe)
• Apps: Speedtest by Ookla, nPerf, and Fast.com for cross-validation
• Samples: 1,524 tests; 40+ hours on trains and in stations; 12 hotel Wi‑Fi baselines (Zone 1)
• Locations:
• Heathrow T2/T3/T5 (landside and airside)
• City of London (Bank, Moorgate, Liverpool Street), Canary Wharf
• Elizabeth line (Paddington–Canary Wharf–Custom House), Jubilee, Victoria, Central
• Metrics captured: median and p90 down/up Mbps, latency ms, jitter ms, packet loss %, disconnect events, 4G/5G SA/NSA state, handovers

How to replicate our approach (practical checklist): 1. Use a 5G SA-capable phone and ensure 5G SA is toggled on (where available). 2. Install two speed test apps to cross-check results. 3. Run 30–60 second tests stationary, and short bursts (10–15 seconds) in tunnels to reduce motion bias. 4. Log exact location and line/segment; note carriage position (front/middle/rear can matter near equipment rooms). 5. Capture background: time, crowding level, and whether Wi‑Fi or Wi‑Fi calling is on. 6. Repeat at different times (rush vs off-peak) to surface congestion.

Key findings at a glance

• Heathrow (T2/T3/T5): Consistent 5G with high mid-band capacity; median download 180–280 Mbps airside, 120–200 Mbps landside; uplink 20–45 Mbps; latency typically 19–32 ms on SA.
• City street level (Square Mile): Dense small-cell 5G delivers strong medians (220–350 Mbps) and low jitter; uplink 25–55 Mbps; lunchtime congestion is noticeable but rarely crippling.
• Canary Wharf: Among the highest medians observed (260–400 Mbps) and very stable latency; great for quick syncs and uploads.
• Elizabeth line: Best-in-class tunnels; median 150–250 Mbps with fewer dropouts and faster handovers; uplink 18–40 Mbps; latency 22–35 ms where SA is active.
• Deep Tube (Jubilee/Victoria/Central): Coverage is now excellent across many tunnels, but performance is more variable than Elizabeth line; medians 60–140 Mbps; occasional 10–20 second dead zones in older sections and curves.
• Hotel Wi‑Fi baseline (Zone 1 business hotels): Median 55–120 Mbps down, 15–35 Mbps up; latency 9–25 ms; predictable once you’re on Ethernet or a 5 GHz SSID; still beaten by good 5G for large uploads.

Heathrow (LHR): Terminals 2–5

What we measured - T5 airside (A gates): Median 240 Mbps down / 38 Mbps up; latency 21 ms; near-universal 5G with strong mid-band. - T3 arrivals hall: 150/28 Mbps median; occasional NSA fallbacks at peak arrivals create 10–15% higher latency. - T2 security area: 210/42 Mbps median; excellent for last-minute downloads; SA present for multiple operators. - Inter-terminal transit: Medians dip to 90–140 Mbps with brief handover stutters.

5G SA vs NSA - SA observed consistently in T2/T5; mixed SA/NSA in T3 landside. - SA improves uplink stability and cuts jitter by ~20–30% when crowds surge.

Traveller tips at Heathrow - Pro tip: After landing, toggle Airplane Mode off/on to force a clean attach; you’ll often jump from NSA to SA with a better uplink. - If your video upload stalls, move closer to windows or gate piers where small cells improve line-of-sight. - Avoid running multiple tests right at passport control—RF is noisy and crowded; results aren’t representative.

City core: Square Mile and Canary Wharf

Square Mile (Bank, Moorgate, Liverpool Street) - Street-level medians 220–320 Mbps; p90s often 500–650 Mbps with carrier aggregation. - Latency 18–28 ms on SA; 25–40 ms on NSA in busy pockets. - Building canyons can cause short fades; stepping 5–10 metres to a junction often restores full 5G.

Canary Wharf - Docklands is a standout: medians 260–400 Mbps; uplink 30–60 Mbps. - Lakeside promenades and concourses have excellent small-cell density; great for large OneDrive/Google Drive syncs.

Remote work practicality - 1080p Teams/Zoom is trivial on street-level 5G; 4K streaming is fine where medians exceed ~80 Mbps. - If your phone flips between SA and NSA during a call, expect a brief jitter spike; enabling Wi‑Fi calling on stable hotel or office Wi‑Fi can help.

Underground: Elizabeth line and deep tunnels

Elizabeth line (Paddington–Canary Wharf–Custom House) - Most reliable tunnel experience in our london mobile speed test: medians 150–250 Mbps, uplink 18–40 Mbps, latency 22–35 ms with SA prevalent. - Handover performance is notably smooth between stations; brief 1–3 second dips entering curves. - Platforms are even faster (200–350 Mbps) with strong beamforming and minimal congestion outside rush hour.

Jubilee, Victoria, Central (deep Tube) - Tunnels now widely covered but performance varies more than the Elizabeth line. - Jubilee: 100–180 Mbps medians, good uplink; occasional 5–8 second dropouts around tight curves. - Victoria: 80–140 Mbps; more NSA fallbacks at peak times cause higher jitter. - Central: 60–120 Mbps; some legacy sections show 10–20 second dead spots between stations.

How to keep calls stable underground - Use audio-only or 720p video in deep tunnels; save 1080p for the Elizabeth line or platforms. - Turn on Wi‑Fi calling; in many stations, the dedicated Wi‑Fi plus small-cell backhaul is steadier than constrained 5G uplink during crush loads. - If your device lets you, prefer 4G/5G “Auto” rather than “5G On” forced—forced 5G can cause sticky handovers underground.

Hotel Wi‑Fi baseline versus mobile

• Zone 1 business hotels (12 properties) tested mid-evening:
• Wi‑Fi medians 55–120 Mbps down, 15–35 Mbps up; latency 9–25 ms on 5 GHz; packet loss near zero once on Ethernet.
• Peak-time streaming is predictable; large cloud backups (photos/videos) are often faster on 5G uplink if your room’s Wi‑Fi is congested.
• Takeaway: For live calls and remote desktop, hotel Wi‑Fi (wired or strong 5 GHz) is safest. For bulk uploads, step outside on strong 5G if you need speed.

5G SA vs NSA: what travellers need to know

• 5G SA (Standalone) attaches directly to a 5G core. Benefits:
• Lower latency (often 5–10 ms better than NSA).
• More consistent uplink when networks are busy.
• Cleaner handovers in modern tunnels (not universal yet).
• 5G NSA (Non‑Standalone) rides a 4G core. It’s widely available and still very fast, but jitter and latency are less predictable under load.
• Roaming reality: Some roaming profiles still prefer NSA in parts of London even where SA exists. We saw SA for multiple operators in Heathrow and the City; NSA dominated on certain deep Tube segments during peaks.
• Tip: If your plan supports VoLTE/VoNR, keep both enabled. Disable any “Low Data Mode” features while navigating or tethering laptops.

For multi-country travellers, a regional profile like Esim Western Europe reduces SIM swaps. If you’re arriving from the US and continuing on, compare with Esim North America or a country plan such as Esim United States. Heading to Paris, Rome or Barcelona next? See Esim France, Esim Italy and Esim Spain.

Data and reproducibility

• Open data: We publish the raw measurements (Q4 2025 London Speed Tests) as an open CSV, with columns:
• timestamp, device, operator, SA/NSA state, location (station/segment), GPS accuracy, down_mbps, up_mbps, latency_ms, jitter_ms, packet_loss_pct, dropout_flag
• Access: Download the open CSV and documentation via our Partner Hub. Business users can request automated extracts and alerts through For Business.
• Methods: Each location/segment includes at least 5 samples per operator. We discard outliers from failed attaches, plus first-second warm-ups in tunnels.
• Attribution: Cite “Simology Connectivity Lab, London Q4 2025” with a link back to this report when using charts derived from the CSV.

Practical tips: make London connectivity work for you

Quick setup before you land - Install two test apps and download offline maps. - Add your eSIM profile in advance. For simple UK and Schengen coverage, use Esim Western Europe. - Enable VoLTE/VoNR and Wi‑Fi calling.

At Heathrow - After switching off Airplane Mode, wait 30–60 seconds for a 5G SA attach, then start navigation or ride-hailing. - If you need to upload large files, do it airside near gates where mid-band 5G is strongest.

On the Elizabeth line and Tube - Expect the Elizabeth line to handle 1080p video calls; switch to audio-first on older deep Tube tunnels. - Stand near carriage ends at stations if you must upload—platform small cells are often strongest there.

At the hotel - Prefer the 5 GHz SSID or Ethernet for calls; run one quick test to confirm stability. - Use your 5G uplink for big cloud backups if hotel Wi‑Fi drags below 10–15 Mbps up.

FAQ

• What’s the fastest area from this london mobile speed test?
• Canary Wharf led medians (260–400 Mbps), with the Elizabeth line platforms close behind. Heathrow T5 airside also performed very well.
• Can I rely on mobile data in Tube tunnels now?
• Largely yes. Elizabeth line is excellent end-to-end; Jubilee/Victoria/Central are broadly covered with the odd 10–20 second gap. Plan for brief dips and keep calls audio-first in older tunnels.
• Does 5G SA work when roaming?
• Often, but not everywhere. We saw SA on multiple operators in Heathrow and the City. Some roaming profiles still prefer NSA in parts of the network. It’s automatic—you can’t force SA if the profile or cell doesn’t allow it.
• Is hotel Wi‑Fi better than 5G for video calls?
• Usually, yes—if you’re on a clean 5 GHz SSID or Ethernet. Latency and jitter are steadier. For big file uploads, good 5G uplink can be faster than congested hotel Wi‑Fi.
• What eSIM should I pick for a UK + Europe itinerary?
• A regional option like Esim Western Europe keeps things simple across borders. If your trip includes North America legs, compare with Esim North America or specific country plans like Esim United States.
• Where can I get the raw data?
• The open CSV and methods guide are available on our Partner Hub. Teams needing regular updates should visit For Business.

Next step

Planning London plus onward travel? Choose a seamless plan for the UK and beyond via Destinations, then download the full dataset from our Partner Hub to plan your workdays with confidence.

Heading to Paris and wondering if your phone or hotel Wi‑Fi will keep up? This paris speed test internet report compares real‑world performance at Charles de Gaulle (CDG) Airport, across the city centre, and on typical hotel Wi‑Fi. We focused on what travellers actually feel: stable video calls, map loads, photos backing up, and whether streaming stutters underground on the Metro. We measured download/upload speeds, latency, and jitter, and we separated indoor versus outdoor results. The short version: outdoor 5G in the centre is the fastest and most consistent, CDG cellular is fine but spiky at busy gates, the Metro works for messages and music but can wobble during handovers, and hotel Wi‑Fi quality varies wildly by property and floor.

We’ve published an open CSV so you can audit or remix the dataset. If you’re planning a broader itinerary, browse our country picks on Destinations or grab a local Esim France plan before you land.

TL;DR results at a glance

• City centre (outdoor 5G): median 180–260 Mbps down, 18–35 Mbps up; latency 18–30 ms; jitter 4–9 ms
• City centre (indoors near window): median 70–120 Mbps down; jitter rises to 8–15 ms in older buildings
• CDG Airport cellular (landsid/airside): median 45–90 Mbps down, 8–15 Mbps up; latency 28–45 ms; jitter 8–18 ms
• CDG Airport public Wi‑Fi: highly variable, typically 10–40 Mbps down, jitter >20 ms during peaks
• Paris Metro snapshot: platforms 60–110 Mbps down; in‑tunnel 25–60 Mbps down; jitter spikes during cell handovers
• Hotel Wi‑Fi: budget/mid‑range median 20–60 Mbps down with jitter 15–35 ms; premium/business floors often 100–250 Mbps down, jitter 6–12 ms

Interpretation: for calls and uploads, latency and jitter matter more than raw speed. City‑centre 5G is excellent; CDG and Metro are usable with occasional blips; hotel Wi‑Fi is the wildcard.

How we tested (transparent methodology)

• Dates and windows: three days in Q4 2025 (morning, lunchtime, evening, and late night runs)
• Zones: CDG Terminals 1/2 (arrivals halls, selected gates, RER entrance), central Paris (1st, 2nd, 9th, 11th), and two hotels (one mid‑range, one upscale)
• Indoors vs outdoors: repeated runs on pavements, inside cafés, lobbies, and hotel rooms (window vs corridor side)
• Mobile tech: 5G NSA/SA and LTE where 5G unavailable
• Devices: recent iOS and Android flagships with eSIM; laptop for Wi‑Fi validation
• Tools: two independent speed test engines; concurrent ping to EU anycast; jitter measured as latency variance over 30–60 seconds
• Metrics recorded: timestamp, coordinates (3‑digit geohash), location type (airport/city/hotel/metro), indoor/outdoor, network tech (5G/LTE/Wi‑Fi), signal stats (where accessible), download, upload, latency, jitter, packet loss, device, and notes on crowd density
• Sample size: 120+ mobile tests, 40+ hotel/airport Wi‑Fi tests, 30+ Metro runs

What we didn’t do: exhaustive operator‑by‑operator benchmarking or rural coverage. This is a traveller‑centric snapshot, not a national audit.

CDG Airport: cellular vs airport Wi‑Fi

What we saw: - Cellular is “good enough” for maps, ride‑hailing, and messaging, with occasional dips around crowded gates and security queues.
- Airport Wi‑Fi is convenient for quick browsing but can feel laggy at peak times due to higher jitter and captive portal overheads.

Typical numbers: - Cellular near arrivals: 60–90 Mbps down, 10–15 Mbps up; latency 30–40 ms; jitter 8–12 ms
- Cellular at busy gates: 30–60 Mbps down; jitter 12–18 ms (spikes during boarding calls)
- Public Wi‑Fi: 10–40 Mbps down, 5–20 Mbps up; latency 20–35 ms; jitter 20–40 ms

Practical tips: - If the airport Wi‑Fi feels sluggish on calls, switch to cellular; lower jitter helps stability.
- Move a few metres away from dense crowds or metal structures; micro‑shifts can halve jitter.
- Disable low‑data/low‑power modes when you need top performance for a call or upload.

City centre: outdoor 5G is king, indoors is about placement

Outdoors (boulevards, squares): - Consistently fast 5G, especially on wider streets with clear line‑of‑sight.
- Median 180–260 Mbps down, 18–35 Mbps up; latency 18–30 ms; jitter 4–9 ms.
- Excellent for hotspotting a laptop or rapid photo backups.

Indoors (cafés, lobbies, apartments): - Older buildings with thick walls or deep corridors dampen mid‑band 5G.
- Near windows: 70–120 Mbps down, 10–20 Mbps up; jitter 8–15 ms.
- Interior tables or basement bars: speeds drop to 25–60 Mbps; latency and jitter both rise.

Pro tips: - Sit by a window or door for the biggest improvement.
- If your 5G is flaky indoors, forcing LTE can reduce jitter for video calls.
- Prefer headset calls to mask brief jitter bursts.

Paris Metro snapshot: good on platforms, variable in tunnels

Coverage across platforms is solid. Trains see more variability during handovers between cells in tunnels.

Observed: - Platforms: 60–110 Mbps down, 10–20 Mbps up; latency 25–35 ms; jitter 8–12 ms.
- In‑tunnel: 25–60 Mbps down; upload can sag below 8 Mbps; jitter 12–25 ms, with brief spikes on line transitions.
- Music streaming and messaging are reliable; HD video calls may stutter during handovers.

Quick checklist for underground reliability: - Pre‑download maps and playlists before you descend.
- Use audio‑only for calls where possible; switch cameras off to withstand jitter.
- Messaging apps with store‑and‑forward (e.g., sending photos) cope better than live uploads in tunnels.

Hotel Wi‑Fi: the biggest wildcard

Mid‑range hotel (older building, multiple repeaters): - 20–60 Mbps down, 10–25 Mbps up; latency 15–25 ms; jitter 15–35 ms.
- Congestion spikes between 19:00–22:00; 2.4 GHz often overloaded.
- Corridor‑side rooms had weaker signal and higher jitter than window‑facing rooms.

Upscale/business‑focused hotel (Wi‑Fi 6/6E): - 100–250 Mbps down, 20–50 Mbps up; latency 8–15 ms; jitter 6–12 ms.
- Consistent evenings; 6 GHz band notably cleaner near conference floors.

Practical hotel playbook: - Ask reception for a 5 GHz or 6 GHz SSID if available; avoid legacy 2.4 GHz.
- Try a wired Ethernet adaptor when available for rock‑steady jitter on calls.
- If the captive portal keeps dropping you, tether via your eSIM; mobile jitter is often lower than congested Wi‑Fi.
- For multi‑country trips, carry a regional eSIM like Esim Western Europe and tether when hotel Wi‑Fi degrades.

Which eSIM plan makes sense for Paris?

• Staying in France only: a local Esim France gives you the best price‑per‑GB and excellent city coverage.
• Multi‑country route (e.g., Paris → Brussels → Milan → Barcelona): go with Esim Western Europe for seamless cross‑border data. If Italy or Spain are next, see Esim Italy and Esim Spain.
• Starting your trip stateside: load your plan before departure with Esim United States for transit coverage, or cover both regions via Esim North America plus a Europe plan.
• Teams on the road: pooled data and fleet eSIMs via For Business.
• Travel trade and resellers: co‑brand or bundle data through our Partner Hub.

Step‑by‑step: get the best speeds in Paris

1) Before you fly - Install and activate your eSIM (don’t wait for the jet bridge).
- Update carrier settings and OS; disable Low Data Mode/Low Power Mode if you’ll hotspot.
- Add your plan to priority data line; enable Wi‑Fi Calling for weak indoor spots.

2) On landing at CDG - Skip congested airport Wi‑Fi if you need a call; use cellular for lower jitter.
- If speeds feel erratic, toggle Airplane Mode for 10 seconds to re‑register on a stronger cell.

3) Around town - For cafés and indoors, sit near windows or doors.
- If 5G is “fast but choppy”, switch to LTE for steadier calls.
- Keep background cloud backups paused during important video calls.

4) In hotels - Prefer 5/6 GHz SSIDs; ask for a room closer to an access point if you’re staying multiple nights.
- Have your eSIM ready to tether during evening congestion.

5) On the Metro - Download offline maps; switch calls to audio‑only when entering tunnels.

Open dataset and reproducibility

We’ve published an open CSV covering every run in this report. Typical columns include: - timestamp_utc
- geohash_3 and location_label (e.g., “CDG T2F gate”, “Le Marais street”, “Hotel A room 5F window”)
- indoor_outdoor (indoor/outdoor/platform/train)
- network_type (5G/LTE/Wi‑Fi) and band note where available
- rsrp/sinr (if accessible), download_mbps, upload_mbps
- latency_ms_median, jitter_ms (stddev over 30–60s), packet_loss_pct
- device (generic) and notes (crowd level, time pressure, observed handover)

Method validation: - Dual test engines per spot to avoid single‑service bias.
- Parallel latency probes to an EU anycast target.
- Repeats across time‑of‑day to capture peak/off‑peak variance.

Use the dataset to slice results your way (e.g., indoor vs outdoor deltas, Metro handover jitter), or compare with speeds in other cities listed on Destinations.

Limitations and what’s next

• This is a city snapshot, not an operator shoot‑out. Performance varies by SIM profile, building, and crowd density.
• We used recent flagship devices; older phones may show lower 5G sensitivity.
• Hotel results represent two properties; your experience may differ considerably.
• We’ll expand to business districts and suburbs in the next wave, plus more granular Metro line coverage.

FAQ

Q: Is eSIM faster than a physical SIM in Paris?
A: Speed is determined by the network and radio conditions, not whether the profile is eSIM or plastic SIM. eSIM simply makes it easier to switch networks and plans.

Q: What’s better for calls: hotel Wi‑Fi or mobile data?
A: In many hotels, cellular data has lower jitter than congested Wi‑Fi, which makes video calls more stable. Premium Wi‑Fi (Wi‑Fi 6/6E or wired) can be excellent, but mid‑range hotel Wi‑Fi often wobbles during evening peaks.

Q: Does the Paris Metro have full 4G/5G coverage?
A: Platforms are well covered. In tunnels, you’ll see brief dips and jitter spikes during handovers. Messaging and music are fine; HD video calls may stutter while trains move between cells.

Q: How much speed do I actually need?
A: For maps and messaging: 1–5 Mbps. For HD video calls: 5–10 Mbps with latency <50 ms and jitter <20 ms. For big photo backups, higher upload helps, but stability (low jitter) is more important during live calls.

Q: Any quick fixes if speeds feel erratic indoors?
A: Sit by a window, toggle Airplane Mode for a reselection, try forcing LTE, and pause heavy cloud syncs. If Wi‑Fi is the issue, jump to cellular tethering.

Q: I’m visiting multiple countries. Can one plan cover me?
A: Yes. Use Esim Western Europe for multi‑country trips. If you’re combining North America with Europe on one journey, pair a regional Europe plan with Esim North America.

Next step: Choose a local eSIM for your trip with Esim France, or plan a broader route via Destinations.