London Speed Test (Q4 2025): LHR vs City vs Tube Tunnels

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London Speed Test (Q4 2025): LHR vs Ci...

London Speed Test (Q4 2025): LHR vs City vs Tube Tunnels

29 Oct 2025

Speedtests
London Speed Test (Q4 2025): LHR vs City vs Tube Tunnels

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.

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EU Long Stays: Fair‑Use for Nomads & Students (90/180‑Day Rule)

EU Long Stays: Fair‑Use for Nomads & Students (90/180‑Day Rule)

Planning a long stretch around Europe? Here’s the traveller‑first guide to EU fair use on long stays. Confusion often comes from mixing two different systems: immigration rules (the Schengen 90/180‑day stay limit) and telecom rules (EU roaming fair use). They are not the same. Immigration limits how long you can stay. Telecom fair use limits how long you can roam on an EU plan before surcharges kick in. If you’re a student with local residency, you’re treated differently to a roaming nomad bouncing between countries. And regional eSIMs add a third option that avoids most “home vs abroad” checks altogether. This guide cuts through the jargon with plain‑English explanations, examples you can copy, and practical checklists to keep your connectivity clean and cost‑predictable. If you just want a solution: country eSIMs are best when you settle in one place; regional EU eSIMs shine for multi‑country hops. Keep reading for the details and how to choose.The quick version: Fair‑use vs 90/18090/180 rule: Immigration. Most visa‑exempt visitors can stay in the Schengen Area up to 90 days in any 180‑day period. Nothing to do with mobile plans.EU roaming fair use: Telecom. EU/EEA operators let their customers “roam like at home” across the EU. To stop permanent roaming, they can apply fair‑use checks over a four‑month window and, if triggered, add regulated surcharges after warning you.Regional travel eSIMs: These are made for roaming. They don’t rely on EU “roam like at home” privileges, so the home‑vs‑abroad test usually doesn’t apply. Instead, your limit is the plan’s validity and data allowance.For country coverage quirks (e.g., Switzerland, UK post‑Brexit), see Destinations.What the EU fair‑use policy actually says (for travellers)EU “Roam Like at Home” (RLAH) protects EU/EEA subscribers using their home mobile plan around the bloc. It applies primarily if you hold an EU plan with an EU operator.The home‑presence and usage test (4‑month window)Your EU operator can watch usage over at least four months. If both are true, they may flag permanent roaming:1) You’ve been more time “abroad” than “at home,” and2) You used more data while roaming than you did at home.If they detect this, they must warn you and give at least 14 days to change your pattern (e.g., use the line domestically or reduce roaming). If nothing changes, they can add small, regulated surcharges on roaming usage. Your service isn’t cut off, but costs rise.Data caps on “unlimited” plans while roamingIf your domestic plan is unlimited or very cheap per GB, your operator can set a specific fair‑use roaming data allowance, calculated from your plan price and EU wholesale caps. The allowance and any out‑of‑bundle surcharge must be clearly communicated. Always read the roaming section of your tariff.Residency or “stable links”Operators can ask for proof of residency or stable links (study, work) when you buy or keep a domestic plan. This isn’t immigration control; it’s to ensure domestic plans aren’t used as permanent roaming products.Warnings and surchargesYou’ll receive a warning before any fair‑use surcharge applies.Surcharges are capped by EU rules and reviewed periodically.Paying a surcharge doesn’t fix the root cause. If your lifestyle is long‑term roaming, reconsider your setup (see below).Note: RLAH covers EU/EEA. It does not automatically include Switzerland or the UK. Check Destinations before you go.Residency vs roaming: which bucket are you in?Students with a local contract (resident or stable link)If you study in, say, France and sign up for a French mobile plan using local documentation, France becomes your “home” for that line. Your everyday use in France typically outweighs your time abroad, so your weekend trips to Spain or a fortnight in Italy sit comfortably within fair use. For deeper country fit, see Esim France, Esim Spain and Esim Italy.Digital nomads and long‑stay visitors (non‑resident)If you don’t have EU residency and you rely on a single EU domestic SIM while rarely returning to its home country, you’re likely to trip the fair‑use test after a few months. Two cleaner options:Use country eSIMs in each country you stay in for a month or two; orUse a regional travel eSIM designed for roaming around Europe.How regional eSIMs fit into long staysRegional travel eSIMs are built for cross‑border use. Instead of offering a domestic plan with RLAH, they provide roaming access in multiple countries from day one. This sidesteps the “domestic vs roaming” test entirely.Multi‑country coverage: A single profile that works across much of the EU. See Esim Western Europe for a practical one‑SIM solve when you’re rotating through EU hubs.Validity and data: Plans come with defined validity (e.g., 15–90 days) and data buckets. If you run out, top up or add another plan—no residency checks.Outside the EU: Heading to or from North America? Pair your Europe plan with Esim North America or set up before you fly with Esim United States.When you’re staying a whole term in one country, a local eSIM can be cheaper for heavy data. For multi‑country months, regional usually wins on simplicity.When to choose a country eSIM vs a regional EU eSIMChoose a country eSIM when:You’ll spend 30+ days in one country and use lots of data.You need local rates for domestic calls or long‑term top‑ups.Example pages: Esim France, Esim Italy, Esim Spain.Choose a regional EU eSIM when:You’ll cross borders frequently (e.g., 3–6 countries over 2–4 months).You prefer one number/data plan to manage across the trip.See: Esim Western Europe.Use dual‑SIM: keep your primary line for authentication calls/SMS, and set the travel eSIM as your data line.Step‑by‑step: Students (semester or year abroad)1) Get a local plan in your host country- Sign up with local ID/student proof. Your host country becomes “home” for that plan.2) Read the roaming section of your tariff- Note any roaming data caps and the four‑month fair‑use window.3) Use your host‑country SIM domestically most of the time- Weekend trips are fine. Long multi‑month trips outside your host country might trigger warnings.4) Add a regional eSIM for holiday stretches- If you’ll travel for several weeks, switch your data line to Esim Western Europe to avoid breaching your domestic plan’s fair‑use pattern.5) Keep alerts on- Don’t ignore SMS warnings. You usually get at least 14 days to adjust your usage before surcharges apply.6) Check non‑EU neighbours- UK/Switzerland often sit outside inclusive roaming. Verify on Destinations before you go.Step‑by‑step: Digital nomads (90–180 days across EU)1) Decide your pattern- Many short stays in multiple countries? Start with a regional plan. One or two long stops? Mix in country eSIMs for each stop.2) Set up before you move- Install the eSIM profile while you have reliable Wi‑Fi. Test with a small top‑up.3) Use dual‑SIM smartly- Keep your home SIM active for 2FA/texts. Set the travel eSIM as the default for data.4) Rotate plans, not penalties- Regional eSIMs like Esim Western Europe are priced for roaming and won’t run into EU “permanent roaming” tests. When staying put, switch to the local country plan (e.g., Esim Spain).5) Avoid long‑term reliance on a single EU domestic plan- If you don’t live there, the four‑month fair‑use pattern will likely catch up and add surcharges.6) Leaving or arriving via the US/Canada?- Bridge the gap with Esim North America or sort stateside coverage with Esim United States.Worked examplesStudent in France, 9 months, frequent tripsYou take a French plan as your main line. You spend most days in France, with occasional weekends in Spain/Italy. You remain well within fair use. For a four‑week summer rail trip, you add Esim Western Europe for data and keep the French SIM for calls/SMS.Nomad, 5 months, 5 countriesMonth in Portugal, then Spain, France, Belgium, Netherlands. You use a regional plan for months 1–3. For months 4–5, because you’re stationary and need more data, you add Esim Spain and Esim France during those longer stays. No EU domestic fair‑use checks apply to your regional eSIM; the country eSIMs are priced for local use when you’re settled.US visitor, 2 months in Italy with side tripsYou keep your US number active for banking but avoid pricey long‑term roaming on your domestic US plan. You install Esim Italy for the base month and add a short regional top‑up for a two‑week loop through neighbouring countries.Pro tips to stay compliant and connectedTrack days and data: set a calendar reminder every time you cross a border and use your phone’s data counter per SIM.Respect SMS warnings: they are your early‑warning system before surcharges.Prefer Wi‑Fi calling and messaging apps for cross‑border calls.Use hotspot sparingly if your plan restricts tethering.Check country exceptions on Destinations before visiting microstates or non‑EU neighbours.Business travellers: corporate pools can smooth roaming costs—see For Business or partner with us via the Partner Hub.FAQQ1: Does the Schengen 90/180‑day rule limit my mobile usage?A: No. 90/180 is immigration. EU telecom fair use is separate. You could be within your visa limit yet still trigger a roaming fair‑use surcharge—or vice versa.Q2: How long can I roam on an EU domestic plan before fair‑use kicks in?A: Operators check at least a four‑month window. If, in that period, you spend more time and use more data abroad than at home, they can warn you and later add regulated surcharges.Q3: I have an “unlimited” EU plan. Is roaming unlimited too?A: Not necessarily. Operators can set a specific fair‑use roaming data cap for unlimited/low‑cost plans and must tell you the allowance and any surcharge once you hit it.Q4: Do regional travel eSIMs have fair‑use limits?A: They’re built for roaming, so the EU “home vs abroad” test doesn’t apply. You’re bound by the plan’s validity and data bucket, plus any reasonable‑use terms (e.g., hotspot limits). For multi‑country trips, see Esim Western Europe.Q5: If I buy a French SIM, can I spend the summer in Italy on it?A: Yes, but extended, heavier use outside France could trigger the four‑month fair‑use test. For a long Italy stay, switch to Esim Italy or add a regional eSIM for the travel leg.Q6: I’m a US traveller. Should I rely on my US plan’s roaming?A: For short trips, maybe. For long stays, many US plans throttle or cap roaming after a few weeks. It’s usually better value to keep your US number for SMS and run EU data on a regional or country eSIM. Start here: Esim United States and Esim Western Europe.Next stepPlan your route, pick your coverage: explore country and regional options on Esim Western Europe, then check country specifics via Destinations.

23 Dec 2025
Move eSIM to a New Android Phone (Samsung/Pixel/OnePlus)

Move eSIM to a New Android Phone (Samsung/Pixel/OnePlus)

If you’re upgrading your Android phone or carrying a new device for travel, moving your mobile plan across should be straightforward. With eSIM, that can mean either a direct device‑to‑device transfer (supported on some models and networks) or a quick reactivation using your carrier’s SM‑DP+ details or QR code. This guide explains both paths for Samsung, Google Pixel and OnePlus, and helps you decide which one to use. We’ll also cover dual‑SIM caveats that catch travellers out, and the exact situations where re‑downloading your eSIM is required. Whether you’re keeping your home number for banking OTPs and adding a travel eSIM for data, or consolidating everything on a new handset, follow the steps below and you won’t be left without service on the way to the airport. Planning a trip? Explore local and regional eSIMs on our Destinations page, including options like Esim United States and Esim Western Europe.Quick reality check: “transfer” vs “reactivate”There is no user‑accessible “export/import file” for eSIM profiles on Android due to GSMA security.Transfers work only when both devices and your carrier support the built‑in eSIM migration feature.Otherwise, you’ll reactivate on the new phone by scanning a QR code or entering SM‑DP+ details; your carrier re‑downloads the profile from their server.Keep both devices and a Wi‑Fi network handy. If your old phone is lost or broken, skip straight to the SM‑DP+ reactivation method.Before you start: compatibility and preparation checklistMake sure the following is true to avoid interruptions:Your new phone is eSIM‑capable and carrier‑unlocked.Android version: ideally Android 13 or newer (Android 14 improves transfer on Pixels).Battery ≥ 50% on both phones; connect to stable Wi‑Fi.Bluetooth enabled and both devices are nearby (for transfer).You know your eSIM’s SM‑DP+ server and activation code (check your email/order, carrier app/portal, or support). The code often looks like LPA:1$smdp.plus.example$ACTIVATIONCODE.Find your EID (eSIM ID) in Settings > About phone > Status (some carriers ask for it).If your carrier enforces “one active eSIM per number,” be ready to remove or deactivate the eSIM on your old phone when instructed—ideally only after the new one is live unless support tells you otherwise.Back up your messaging apps if needed (RCS/WhatsApp is account‑based but verify backup settings).Travelling soon? You can keep your home line for OTPs and add a travel data eSIM such as Esim North America or Esim Spain on the new device.Option A: Device‑to‑device eSIM transfer (when available)This is the easiest path when it appears. It requires support from your device, Android version and carrier. If you don’t see a transfer option, jump to Option B.Samsung (One UI 5.1 or later)On recent Samsung models, eSIM transfer is built into SIM Manager.1) On the new Samsung: - Go to Settings > Connections > SIM manager > Add eSIM. - Choose Transfer SIM or Transfer eSIM from another device if prompted.2) On the old Samsung: - When a transfer prompt appears, follow on‑screen instructions to approve the transfer. You may also navigate to Settings > Connections > SIM manager > Your eSIM > Transfer to another device if asked.3) Keep both devices unlocked, on Wi‑Fi and close together. Wait for the process to complete.Notes: - Smart Switch does not move eSIM profiles; use SIM manager transfer only. - If your carrier doesn’t support transfer, Samsung will direct you to use a QR/SM‑DP+ activation instead.Google Pixel (Pixel 6 and newer on Android 13/14)Newer Pixels offer eSIM transfer for participating carriers, especially on Android 14.1) On the new Pixel: - Settings > Network & internet > SIMs (or Mobile network) > Add SIM > Download a SIM instead. - If you see Transfer from another device, select it.2) On the old Pixel: - Approve the transfer when prompted.If the transfer option is missing or shows “No eligible SIM,” proceed with SM‑DP+ reactivation.OnePlus (OxygenOS 13/14)Most OnePlus models support eSIM but typically do not offer device‑to‑device transfer. Expect to use QR/SM‑DP+ reactivation (see Option B). If a transfer option appears on your device and carrier, follow on‑screen steps as above.Pro tips for transfersKeep mobile data off during transfer and use Wi‑Fi to avoid interruptions.If you have multiple eSIM profiles, transfer one at a time.After transfer, test calls, SMS and data. Then remove the eSIM from the old phone if required by your carrier.Option B: Reactivate the eSIM on your new phone (QR/SM‑DP+)If transfer isn’t supported, re‑download the eSIM profile from your carrier’s server.What you need: - SM‑DP+ address, activation code, and (optionally) a confirmation code. - Your EID (sometimes required to bind the profile to your new device).Generic Android steps1) On the new phone: - Open Settings: - Samsung: Connections > SIM manager > Add eSIM. - Pixel: Network & internet > SIMs > Add SIM > Download a SIM instead. - OnePlus: Settings > Mobile network > SIM management > Add eSIM. 2) Choose Scan QR code. If you don’t have a QR, pick Enter details manually and input the SM‑DP+ server and activation code from your carrier. 3) Stay on Wi‑Fi while the profile downloads. When installed, set it as your preferred line for data, calls and SMS as needed.When SM‑DP+ reactivation is requiredMoving between different brands (e.g., Samsung to Pixel, Pixel to OnePlus).Your carrier doesn’t support Android’s transfer feature.The old phone is lost, broken or wiped.You’ve changed numbers or are porting service.The profile on the old phone is locked or corrupted.Business or MDM‑managed lines where security policy blocks transfer.If your carrier limits one active eSIM per line, they may ask you to remove the old one first or will automatically suspend it when the new profile activates.Common places to find your QR/activation detailsThe original fulfilment email or order page.Your carrier or provider app.Web account portal under “Manage eSIM.”Support chat—have your EID ready.Heading to France or Italy? You can set up your travel data line in advance with Esim France or Esim Italy and activate it the moment you land.About “export/import” of eSIM profilesThere is no manual export/import file for eSIM on Android.“Transfer” is a controlled hand‑off between devices when supported.Otherwise, you “import” by re‑downloading from the SM‑DP+ server using your activation code.If anyone asks you to share an eSIM file, treat it as a red flag.Dual‑SIM and travel caveats (read before you fly)Dual‑SIM flexibility is brilliant for travellers, but a few settings matter:One data connection at a time: Android supports DSDS (dual SIM dual standby) but only one SIM can carry mobile data concurrently. Set your travel eSIM as the data SIM.Roaming control: Turn off data roaming on your home SIM to avoid surprise charges, while keeping calls/SMS on if you need OTPs.5G/VoLTE per SIM: 5G and VoLTE availability can be restricted when two SIMs are active. On some models, 5G drops to 4G when both SIMs are enabled. Test locally before you travel.Wi‑Fi Calling and RCS: These features are provisioned per SIM. If they don’t work on the new device, toggle them off/on or re‑provision by briefly switching the device to airplane mode and back on Wi‑Fi.Visual Voicemail: May require your carrier’s app or re‑provisioning on the new phone.Stored vs active eSIMs: Many phones can store multiple eSIM profiles (e.g., 5–8) but only keep one or two active at once. Name them clearly (e.g., “Home UK,” “Spain data”).Priority for calls/SMS: Choose the correct default SIM for outgoing calls and messages, or set “Ask every time” to avoid using the wrong line.Planning multiple countries? Consider a regional plan like Esim Western Europe instead of juggling several single‑country eSIMs such as Esim Spain.Troubleshooting: errors and roadblocksNo transfer option available:Update both phones to the latest software.Log into the same brand account if required (Samsung account for some transfers).If it still doesn’t appear, use SM‑DP+ reactivation.“No eligible SIM” or “Carrier not supported”:Your carrier doesn’t support transfers. Use the QR/SM‑DP+ method or contact support to unlock/reissue an eSIM.Activation fails or stalls:Use Wi‑Fi only; turn off mobile data during download.Toggle airplane mode or reboot.Clear Carrier Services app cache (Pixels/stock Android).Confirm the SM‑DP+ address and activation code characters (watch for 0/O and 1/I mix‑ups).Wait 10–15 minutes and try again—back‑end provisioning can lag.Carrier says the eSIM is “already in use”:Remove/deactivate the old profile and ask the carrier to reset/reissue the activation.Need the EID:Find it in Settings > About phone > Status > EID. Share it with support if requested.Lost or wiped old phone:Contact your carrier to revoke the old eSIM and issue new activation details. You do not need the old device to activate on the new one.If you’re setting up for a work trip and need multiple lines for staff, our team can help streamline provisioning via For Business. Partners and resellers can access tools and support via the Partner Hub.Example: setting up a travel eSIM alongside your home lineKeep your home eSIM active for calls/OTP.Add a travel data eSIM like Esim United States before you fly.On arrival, set the travel eSIM as the data SIM, keep data roaming off on your home line.Test WhatsApp/Maps and a quick speed test on Wi‑Fi first, then on mobile data.If your phone drops to 4G with two SIMs active, that’s normal on some models; if you need 5G, temporarily disable the inactive SIM.FAQ1) Can I export my eSIM profile to a file and import it on the new phone? - No. For security, Android does not allow exporting eSIM profiles to files. Use device‑to‑device transfer (if supported) or re‑activate via QR/SM‑DP+.2) Do I need my old phone present to transfer eSIM? - Only for device‑to‑device transfers. If the old phone is unavailable, ask your carrier to reissue activation details and use the SM‑DP+ method.3) Will dual‑SIM affect my 5G or battery life? - Possibly. Some phones limit 5G when two SIMs are active. Dual standby also uses slightly more power. If you need maximum speeds, disable the unused SIM temporarily.4) How many eSIMs can I store? - It varies by model (often 5–8 stored). Typically only one or two can be active at the same time. Check your device specs.5) Will WhatsApp, banking and OTPs still work after I move my eSIM? - WhatsApp links to your account, not the SIM, but ensure you keep your number and have backups. For OTPs, keep your home line active for SMS; confirm roaming is off if you want to avoid data charges.6) Does eSIM reactivation cost money? - Some carriers charge a small fee to reissue or move an eSIM. Policies vary—check your provider’s terms before you start.Where to nextSet up your travel line now so it’s ready when you land. Browse country and regional options on Destinations, including favourites like Esim United States, Esim France and Esim Western Europe.

30 Oct 2025
SIM‑Swap & Account Takeover: Prevention Tips for Travellers

SIM‑Swap & Account Takeover: Prevention Tips for Travellers

Staying connected abroad shouldn’t put your identity at risk. Yet SIM‑swap fraud and account takeovers spike when people travel. Why? Attackers know you’ll be in transit, juggling time zones, relying on roaming, public Wi‑Fi and unfamiliar numbers. If they convince a carrier to reassign your number (a SIM‑swap), they can intercept SMS one‑time codes and reset your logins—often within minutes. This guide gives you practical, step‑by‑step defences you can set up in under an hour, plus what to do if you ever see suspicious “No Service” or sudden account alerts mid‑trip.We’ll focus on the highest‑impact moves for sim swap protection travel: enabling carrier account and port‑out PINs, turning on real‑time account alerts, tightening password hygiene and phishing detection, and knowing exactly when to contact your carrier. We’ll also show how travel eSIMs, used alongside your primary number, can reduce exposure without breaking your banking or messaging flows. Whether you’re off to the US, France, Italy or Spain, explore reliable eSIM options via Destinations and keep your number—and identity—yours.What is SIM‑swap and why travellers are targetedA SIM‑swap (also called port‑out fraud) happens when someone persuades your mobile carrier to move your number to a SIM or eSIM they control. Once that happens, they can: - Receive SMS one‑time passwords (OTP) meant for you - Reset email, bank, crypto, travel or social accounts - Trigger password resets using your number as a recovery method - Approve fraudulent transactions that rely on SMS codesTravellers are prime targets because: - You’re harder to reach and slower to respond to alerts - Roaming can mask “No Service” blips and strange SMS messages - You’re more likely to use public Wi‑Fi and unfamiliar networks - You may depend on SMS for banking while abroadPro tip: SIM‑swap is often the second step. The first is phishing—stealing enough info (name, number, DOB, last digits of ID) to convince a carrier. Stopping the phish often stops the swap.Before you fly: lock down your number and accountsTreat your mobile number like a bank account. These steps take 30–60 minutes and block most SIM‑swap attempts.1) Add carrier security controlsSet a strong carrier account password and memorable passcode.Enable a port‑out PIN or number lock/freeze (names vary by carrier). This prevents transfers without the PIN—even if someone knows your personal details.Turn on SIM PIN on your device. This protects your physical SIM if your phone is lost or stolen. Note: it won’t stop a remote carrier‑initiated SIM‑swap by itself.Disable or PIN‑protect voicemail, especially “reset by voicemail” features.Pro tip: Save your carrier’s fraud and international support numbers offline (notes app, paper, or password manager). If you lose service, you’ll need another line to call them.2) Move critical accounts off SMS 2FASwitch your email, cloud storage, bank, social and travel accounts to an authenticator app, hardware key or passkeys.Remove your phone number as a recovery method where possible; add a second email instead.Download and print backup codes for top accounts; store them securely.Pro tip: Your email is the “master key”. Secure it first with an authenticator or passkey before anything else.3) Turn on real‑time alertsCarrier: login attempts, SIM changes, password changes, new lines added.Email: new logins, forwarding rules added, recovery methods changed.Bank/fintech: new device logins, password changes, large transactions, payee changes.4) Upgrade password hygieneUse a password manager to create unique, 16+ character passphrases.Enable Travel Mode (if your manager supports it) to carry only what you need.Update OS and apps; enable device‑wide screen lock and Find My/remote wipe.Smarter connectivity choices on the roadUsing a travel eSIM can reduce risk by separating your data from your primary number.Keep your primary line active but restricted to calls/SMS only if you still need bank texts. Use a travel eSIM for data and apps.Alternatively, keep your primary number off (or on “no data”) and shift logins to app‑based authentication.Prefer secure messaging apps tied to your account rather than your phone number for travel coordination.Explore regional options: - United States: Esim United States - France: Esim France - Italy: Esim Italy - Spain: Esim Spain - Multi‑country: Esim Western Europe or Esim North AmericaPro tip: eSIM reduces the risk of physical SIM theft, but it doesn’t eliminate carrier‑level SIM‑swaps. Keep those carrier PINs and locks enabled.Spot the red flags: phishing and social engineering on the moveExpect tailored lures while travelling. Common examples: - “Your roaming bill exceeds $500. Verify now.” - “We’ve blocked your SIM for unusual activity. Confirm to restore.” - “Bank alert: new device login in [your destination]. Enter the code we just sent.” - Fake delivery or airline messages with urgent links - “Apple/Google/Meta: your account will be disabled. Appeal here.”How to verify safely: - Do not click links in unsolicited texts/emails. Open the carrier/bank app directly or type the URL. - Check sender details. Short codes vary by country; inconsistency is a clue. - Look for subtle misspellings, odd grammar or mismatched domains. - Treat unexpected one‑time codes as a sign someone is trying to log in as you.Pro tip: If a caller claims to be your carrier and asks for your port‑out PIN or full password, hang up and call the official number you saved earlier.When to contact your carrier (and exactly what to say)Contact your carrier immediately if any of the following occur: - Sudden “No Service” on your primary line while others have signal - Multiple “Your SIM has been changed/activated” messages - Password reset texts you didn’t request - Banks/email warn about login attempts from your home country while you’re abroadWhat to ask: - “Place an immediate freeze/number lock on my line; disable port‑out.” - “Reverse any SIM change and issue a new SIM/eSIM tied to my account.” - “Add a permanent port validation PIN on file; require it for any changes.” - “Notify me of all account changes by email and app push.” - “Confirm recent changes and provide a record of the activity.”Pro tip: From abroad, contact via carrier app over Wi‑Fi or your travel eSIM data. Keep your identity docs and account PIN ready.Step‑by‑step: If you suspect a SIM‑swap right now1) Get online another way - Use hotel Wi‑Fi, a companion’s hotspot or your travel eSIM for data. - Avoid logging in over unsecured public Wi‑Fi without a trusted VPN.2) Lock your number - Log into your carrier account; change the password and enable any number lock/port‑freeze features. - If you can’t log in, call the carrier’s fraud line and ask them to freeze/restore the line.3) Secure your “master” accounts - Change your email password; enforce authenticator or passkeys. - Review account recovery settings; remove phone number as a recovery method if safe to do so.4) Stop the financial fallout - Open your banking apps directly; review recent transactions and devices. - Temporarily freeze cards or accounts if anything looks off; call the bank from the app or listed number.5) Rotate other critical logins - Cloud storage, password manager, messaging, crypto, travel/airline accounts.6) Document and follow up - Note times, alerts, and support ticket numbers. - Ask the carrier to investigate and to keep the port‑freeze in place.After you return: keep the locks onLeave the port‑out PIN/number lock enabled permanently.Keep SMS as a last‑resort recovery only; prefer authenticators/passkeys.Review your phone number’s usage in accounts and remove where not essential.Maintain alerts on carrier, email and banking accounts.Revisit your eSIM setup for your next trip via Destinations.For teams on the move, centralise travel connectivity and security policies with For Business. Travel brands and TMCs can streamline secure eSIM distribution via our Partner Hub.Traveller checklist (quick recap)Before departure - Enable carrier account password, account PIN and port‑out PIN/number lock - Turn on SIM PIN; disable or PIN‑protect voicemail - Move key accounts to authenticator/passkeys; print backup codes - Turn on alerts for carrier, email, and bank - Update OS/apps; enable device lock and remote wipe - Save carrier fraud and international support numbers offlineWhile abroad - Use a travel eSIM for data; keep your primary number restricted if needed - Avoid SMS 2FA where possible; use app‑based approvals - Treat unsolicited links and OTPs with suspicion - Verify carrier/bank messages in their official appsIf something feels wrong - Sudden “No Service” + password reset texts = call your carrier now - Lock your line, secure email, check banks, rotate critical passwordsFAQ: sim swap protection travelQ1) Does using an eSIM stop SIM‑swap? - No. eSIM reduces physical SIM theft but carriers can still reassign your number. The real protection is carrier PINs/number locks, strong account passwords and non‑SMS 2FA.Q2) What’s the difference between a SIM PIN and a carrier port‑out PIN? - A SIM PIN protects the SIM on your device. A port‑out PIN (or number lock) is stored with your carrier and is required to move your number to another SIM/eSIM. You need both.Q3) Should I use SMS for two‑factor authentication while travelling? - Only if you must. Prefer authenticator apps, hardware keys or passkeys. If you rely on SMS (e.g., for your bank), enable carrier locks and alerts and keep your primary line reachable but tightly controlled.Q4) I’ve lost service abroad. How do I tell if it’s a SIM‑swap or normal roaming issue? - Check: do other travellers have service? Did you receive SIM change/reset texts or emails? Can you still use data on your travel eSIM? If yes to these clues, contact your carrier’s fraud line immediately and lock your number.Q5) Will a travel eSIM affect my banking texts? - No—your primary number remains your primary. A travel eSIM just handles data. You can keep the primary line active for SMS, or switch banks to app‑based approvals before travel.Q6) I’m travelling across multiple countries. What’s the simplest secure setup? - Use a regional eSIM (e.g., Esim Western Europe or Esim North America) for data, keep carrier locks on your primary number, and rely on authenticator/passkeys instead of SMS wherever possible.Next step: Plan your route and add a regional eSIM with built‑in flexibility. Explore options by country and region on Destinations.

30 Oct 2025