You've done everything right. You bought a travel eSIM, scanned the QR code, followed the setup instructions, and yet your phone is sitting there with no signal or no internet the moment you actually need it. Frustrating, but extremely common — and almost always fixable on your own without contacting support.
If you're on an Android device, the culprit is usually the APN settings. This guide explains what that means, why it happens, and walks you through the fix step by step.
What's Actually Going On?
When you install an eSIM, the network profile gets added to your phone — but that doesn't automatically mean your phone knows how to route mobile data through it. That routing is handled by something called the APN, or Access Point Name.
iPhones tend to configure APN settings automatically when you install an eSIM. Android phones — particularly Samsung, Xiaomi, Oppo and other brands running manufacturer-customised Android versions — often don't. This is why the same eSIM can work perfectly on one device and show no internet on another.
Step-by-Step Fix: APN Settings on Android
Work through these steps in order. Most people find the issue is resolved by step three or four.
Confirm Your eSIM Is Active
Go to Settings and look for SIM Card Manager, SIM & Network, or Connections depending on your Android brand. Confirm that your travel eSIM is listed and enabled. If it shows as inactive or disabled, tap it and toggle it on.
Set the eSIM as Your Mobile Data SIM
Having two SIMs active (your physical SIM and your travel eSIM) means your phone needs to know which one to use for data. In the same SIM settings menu, look for Mobile Data or Preferred SIM for Data and select your eSIM. This step is missed more often than you'd think.
Turn On Data Roaming
Travel eSIMs work by connecting to local partner networks in each country, which technically counts as roaming. If data roaming is switched off, your eSIM will have no way to connect.
Go to Settings › Connections › Mobile Network, select your eSIM, and make sure Data Roaming is toggled on.
Check and Configure Your APN
This is the main fix for most Android users. Navigate to Settings › Connections › Mobile Network › Access Point Names (APN).
If your eSIM provider's APN has been automatically added, select it and make sure it's ticked as active. If no APN is listed, or it looks incorrect, add one manually:
- Tap the + or Add button to create a new APN
- Enter the APN name and APN address from your eSIM provider's activation email or app
- Leave any fields you don't have details for completely blank
- Tap Save, then select the newly created APN so it's ticked as active
Always use the exact APN values from your specific eSIM provider, not generic ones found elsewhere online.
Restart Your Phone
A full restart — not just a screen lock — forces your phone to re-register with the network and apply all the settings you've just changed. Don't skip this step.
Toggle Aeroplane Mode
After restarting, if you're still not connecting, switch Aeroplane Mode on for about 30 seconds then turn it off again. This forces your phone to search for and latch onto the network fresh.
Still No Signal? Run Through This Checklist
If you've done all of the above and still have no internet, go through this list before contacting support:
- eSIM showing as enabled, not just installed?
- eSIM selected as active SIM for mobile data?
- Mobile data turned on separately?
- Data roaming enabled for the eSIM?
- APN details entered exactly as provided?
- Phone fully restarted (not just locked)?
- In an area with network coverage?
- Data allowance still remaining on your plan?
Why This Happens More on Android Than iPhone
Apple tightly controls how eSIM profiles are written and applied on iOS, so APN settings get passed through automatically in most cases. Android is a more open ecosystem, and the way each manufacturer builds their version of Android means APN handling varies significantly between brands and models.
These Android brands all handle APN settings slightly differently:
This isn't a flaw in the eSIM itself. It's just the nature of Android's flexibility — and once you understand what the APN does, fixing it becomes straightforward every time.
When to Contact Support
If you've worked through every step above, confirmed coverage, and your phone still shows no service, it may be a device compatibility issue. Have the following ready to speed things up:
- Your phone model and Android version
- A screenshot of your current APN settings
- A screenshot of your SIM settings showing the eSIM is active
- Your order number or account email
How to Avoid This Problem on Your Next Trip
A bit of preparation before you travel makes a huge difference:
A travel eSIM not connecting on Android is almost never a sign of a faulty eSIM. It's nearly always an APN configuration that needs a nudge, a data roaming toggle that got missed, or the wrong SIM selected for mobile data.
Work through the steps above in order, double-check the checklist, and you'll be online within minutes. Once you know what to check, you'll sort it yourself in seconds on every trip after this one.
