If mobile data stops working while you’re travelling, there’s a good chance the culprit is your APN — the Access Point Name that tells your phone how to reach the internet on a specific network. Many eSIMs configure this automatically, but not always, especially when roaming or switching regions. This guide is your traveller-ready apn settings finder: clear menu paths for major devices, what to edit, and how to test your connection properly before you set off or the moment things go wrong. You’ll find the exact screens to tap on iPhone and Android, the APN fields that actually matter, and practical DNS and diagnostic tips you can use anywhere. Keep it handy for airport SIM swaps, eSIM activations, and hotel Wi‑Fi fails — it’s short, reliable, and built for real-world travel. Planning a trip? Start with our coverage and setup resources across global Destinations and regional eSIMs.
What is an APN — and why travellers should care
- The APN (Access Point Name) is a small configuration that connects your device to a carrier’s mobile data network.
- If it’s wrong or missing, you’ll often see “connected” with no internet, stuck at 3G, no MMS, or hotspot not working.
- eSIMs often auto-set APNs, but manual edits are still common when roaming, changing carriers, or using data-only plans.
When in doubt, use your carrier’s official APN details. If you’re using a regional eSIM (e.g., multi-country plans), your APN may differ from local carriers in each country.
Quick APN settings finder — menu paths by device
Use these menu paths to get to Access Point Names fast. If you don’t see an APN menu, your carrier may lock it; try adding a new profile if allowed, or reset network settings.
iPhone and iPad (iOS/iPadOS)
- Settings > Mobile Data > Mobile Data Options > Data Roaming: turn ON when abroad.
- APN edit path (if available): Settings > Mobile Data > Mobile Data Network.
- If you have multiple plans (Dual SIM/eSIM): Settings > Mobile Data > the plan > Mobile Data Network.
- Note: Many carriers lock these fields on iOS. If you can’t edit them, remove any old profiles (Settings > General > VPN & Device Management), then re-add your eSIM or contact support.
Samsung Galaxy (One UI)
- Settings > Connections > Mobile networks > Access Point Names.
- Tap Add to create a new APN. Save, then tap the radio button to select it.
Google Pixel (Android 13/14/15)
- Settings > Network & internet > SIMs > [Your SIM] > Access Point Names.
- Add new APN. Save, then select.
OnePlus (OxygenOS)
- Settings > Mobile network > SIM 1/2 > Access Point Names.
- Add, save, select.
Xiaomi (MIUI/HyperOS)
- Settings > SIM cards & mobile networks > [Your SIM] > Access Point Names.
- Add, save, select.
Huawei/Honor (EMUI/MagicOS)
- Settings > Mobile network > Mobile data > Access Point Names.
- Add, save, select.
Mobile hotspots/MiFi/USB modems
- Connect to the admin page (often 192.168.0.1 or 192.168.1.1), log in, then Mobile Network > APN.
- Create a new profile with the APN, set as default, reboot.
Pro tips - Dual SIM: ensure the correct SIM/eSIM is selected for “Mobile data”. - After any APN change, toggle Airplane Mode for 10 seconds to force reconnection.
How to add or edit an APN (universal steps)
- Note your carrier’s APN details (from the provider email/app/QR info or website).
- Open the APN screen using the menu path above.
- Tap Add (Android/hotspot) or edit existing (iOS if unlocked).
- Enter only the fields provided by your carrier. Leave the rest blank or default.
- Save, then select the new APN.
- Turn on Data Roaming if you’re outside your home country.
- Toggle Airplane Mode, then test with the pages below.
The fields that actually matter
- Name: Any label (for your reference).
- APN: The critical value (e.g., “internet”, “data”, or a specific string).
- Username/Password: Rarely used. Enter only if provided.
- MCC/MNC: Auto-filled from SIM. Do not change unless instructed.
- APN type: Often leave blank; if required, use “default,supl,mms”. Avoid adding “dun” unless your carrier specifically says so (it can restrict tethering).
- APN protocol: IPv4/IPv6. If offered, choose IPv4/IPv6 (dual-stack). If you have issues, try IPv4.
- Bearer/Network type: Leave “Unspecified/Auto” unless your carrier says LTE/NR.
- MMSC/MMS proxy/MMS port: Only if MMS/picture messaging fails and your plan supports it.
- Proxy/Port: Usually leave blank. If present from a template and speeds are poor, try removing them.
Signs you’ve got it right - You see 4G/5G and data arrows. - Speed test runs, and web pages load without redirect loops. - MMS sends/receives if your plan includes it. - Hotspot works on a second device.
Troubleshooting checklist
No data at all - Confirm Mobile Data is ON and the correct SIM/eSIM is selected for data. - Turn Data Roaming ON when abroad. - Re-enter APN exactly; check for spaces or case errors. - Toggle Airplane Mode for 10 seconds. - Switch APN protocol to IPv4 or IPv4/IPv6. - Preferred network type: set to 5G/4G/3G Auto (don’t lock to 2G/3G). - Try Reset APNs to default (Android) or remove/re-add eSIM (iOS/Android).
Data is slow or inconsistent - Remove any Proxy entries in APN unless required. - Try Private DNS (Android) or switch to a strong local band by moving near a window. - Lock to 4G/LTE if 5G is weak and flapping. - Run tests below to see if DNS or IPv6 is failing.
MMS not working - Add the MMSC/MMS proxy fields provided by your carrier. - Ensure APN type includes mms (e.g., default,supl,mms). - Check your plan includes MMS (many data-only plans don’t).
Hotspot/tethering blocked - Avoid APN type “dun” unless instructed. - Some carriers restrict tethering on specific plans. Test with a laptop; if blocked, check plan details.
Roaming weirdness (works in one country, not the next) - Reboot the phone after border crossings. - In Network operators, select a different roaming partner, then retest. - Check the eSIM provider’s recommended APN for that region. For multi-country plans like Esim Western Europe or Esim North America, APN values can be the same across countries — but sometimes differ; consult plan instructions.
DNS and network testing tips for travellers
When data “connects” but pages don’t load, isolate the issue quickly:
Connectivity basics - Open http://neverssl.com (no HTTPS) and http://captive.apple.com to detect captive portals or DNS hijacks. - Check https://fast.com and https://speed.cloudflare.com for speed and latency. - Verify DNS over cellular at https://1.1.1.1/help (look for “Using DNS over HTTPS/ TLS: Yes/No”). - Test IPv6 at https://test-ipv6.com. If IPv6 fails, set APN protocol to IPv4.
Private DNS (Android 9+) - Path: Settings > Network & internet > Private DNS > Private DNS provider hostname. - Try: 1dot1dot1dot1.cloudflare-dns.com or dns.google. - If some sites break after enabling, switch back to Automatic.
iOS DNS reality - iOS doesn’t let you set DNS for cellular system-wide. You can change DNS per Wi‑Fi network or use a reputable DNS app (e.g., 1.1.1.1) if needed. For APN-related issues, focus on APN protocol and roaming settings.
Quick signal sanity checks - Move outdoors or near a window. - Manually select another roaming network and retest. - Try the SIM/eSIM in another phone, or another SIM in your phone, to isolate device vs. carrier.
When to reset — and when it’s a carrier issue
Reset options (use in this order) 1. Reset APNs to default (Android: three-dot menu in APN screen). 2. Remove and re-add the eSIM profile (and re-scan the QR). 3. Reset Network Settings: - iOS: Settings > General > Transfer or Reset > Reset > Reset Network Settings. - Android: Settings > System > Reset options > Reset Wi‑Fi, mobile & Bluetooth.
It’s probably a carrier-side problem if - You have full signal but no IP address or data flow across multiple APNs. - Other users on the same plan/country have the same issue. - Hotspot/MMS fail even with the exact official APN.
In those cases, contact support for the plan you’re using. For trip planning and alternatives, compare regional options across Destinations, or pick a country/region-specific eSIM such as Esim United States, Esim France, Esim Italy, or Esim Spain.
Plan ahead with the right eSIM
The right plan reduces APN headaches. Regional packs often auto-configure and roam seamlessly:
- Single-country: Esim United States, Esim France, Esim Italy, Esim Spain.
- Multi-country: Esim Western Europe, Esim North America.
Running a team on the road? Centralise provisioning and support with For Business, and explore partnership options via our Partner Hub.
FAQ
How do I find my carrier’s APN details? - Check the activation email/app from your eSIM/SIM provider, scan the QR again for notes, or search the provider’s help centre. Avoid random APN lists; always verify with the plan you actually bought.
Why can’t I edit APN on my iPhone? - Many carriers lock APN fields on iOS. Remove any old configuration profiles, re-add the eSIM, or contact support. On some carriers, only MMS fields are editable.
Which APN protocol is best: IPv4 or IPv6? - Use IPv4/IPv6 (dual-stack) if available. If you see timeouts or IPv6 test failures, switch to IPv4 and retry.
Will the APN affect my speed? - Indirectly. A wrong APN, proxy entries, or “dun” type can throttle or block data. A correct APN with no proxy, stable 4G/5G, and good DNS usually yields the best results.
Do I need to change APN when I roam? - Often no, but with some roaming or multi-country eSIMs you may need a specific APN. Always follow the plan’s instructions, turn on Data Roaming, and re-test after border crossings.
Why does hotspot stop working with some APNs? - Some carriers restrict tethering unless the APN type includes “dun”, while others block it if “dun” is present. Use the exact APN settings your plan provides; if tethering is excluded by the plan, it may remain blocked.
Next step: Choose your travel eSIM and get setup instructions for your route with Destinations.