Most travel eSIMs work on their own as soon as they are activated, but sometimes you have to manually enter the APN for them to connect to the internet. Knowing how to configure an eSIM's APN can get you out of a jam when you have the card installed but no internet. In this guide, you will learn what an APN is, when it's necessary to adjust it, and the exact step-by-step process for iPhone and Android, without technical jargon.
What is an APN and what is it for?
The APN (Access Point Name) is the name of the access point that tells your mobile how to connect to the internet through the operator's network. Without the correct APN, you have coverage and signal, but the data doesn't work. It's like having the door to your house but no key to open it.
Each operator has its own APN, a small configuration with a name (sometimes also a username and password) that the mobile uses to route your data. Normally, the APN is configured automatically when you install an eSIM: the profile you scan already contains the settings. That's why most people never hear about the APN. It only comes into play when something goes wrong and the eSIM, despite being installed and having a signal, doesn't provide internet. In that case, manually entering the correct APN usually fixes it quickly.
Do I need to configure my eSIM's APN?
In most cases, no. Modern travel eSIMs come with the APN pre-configured and connect to the internet on their own as soon as you activate them. You will only need to adjust it if the eSIM is installed, has a signal, but cannot connect to the internet even with data activated.
Before diving into the APN, rule out the basics, which resolve most failures: check that you have selected the eSIM as your data line, that data roaming is activated for that plan, and that the plan is actually active (not expired or out of data). Often the problem is not the APN, but one of these settings. If everything is correct and you still can't browse, then it's time to check the APN. The guide on eSIM installed but no data helps you rule out other issues before touching anything, and the guide on how to activate an eSIM reviews the complete activation process.
Golden rule: don't touch the APN first. First, check that the eSIM is your data line and that roaming is activated. Only then, if that's all good and you still have no internet, should you consider the APN.
How to configure the APN on iPhone step by step
On iPhone, the APN is located within each line's mobile data settings. The process is quick and does not delete anything else from your configuration. Do this with the eSIM selected as the data line.
- Open Settings and go to Mobile Data (or Cellular).
- Tap on the travel eSIM in the list of lines.
- Go to Mobile Data Network.
- In the APN field under the "Mobile Data" section, enter the APN provided by your provider.
- Leave username and password blank unless instructed otherwise.
- Exit Settings, activate and deactivate airplane mode for a few seconds for the changes to apply.
If you don't see the "Mobile Data Network" option, it usually means that line does not allow editing; on a travel eSIM, it is almost always available. For the rest of the iPhone installation, you have the guide on eSIM installation and activation on iPhone.
How to configure the APN on Android step by step
On Android, the path changes slightly depending on the brand (Samsung, Xiaomi, Google Pixel), but the idea is the same: enter the eSIM configuration and edit or create a new APN. Here you can have several APNs saved and choose which one to use.
- Open Settings and go to Connections or Network & internet.
- Go to Mobile networks or SIMs and select the travel eSIM.
- Look for Access Point Names (APN).
- Tap the + symbol to add a new APN (or edit the existing one).
- Enter the Name (anything) and the APN provided by your provider; leave the rest as default.
- Save with the three dots → Save and select that APN as active.
Restart mobile data or airplane mode for the changes to take effect. If you have a Samsung or any Android device and want the complete process, the guide on installing and activating eSIM on Android details it brand by brand.
What information to enter in the APN
The only essential piece of information is the APN name, which your eSIM provider will give you (you'll find it in the purchase email or in the plan's instructions). Username, password, and the rest of the fields are almost always left blank or as default.
This table summarizes what to fill in and what not to in a typical travel eSIM APN:
| Field | What to enter | Required |
|---|---|---|
| Name | Whatever you want (e.g., "Travel") | Yes (internal label) |
| APN | As indicated by your provider | Yes |
| Username | Blank | No |
| Password | Blank | No |
| APN type | default,supl (if requested) | Usually not |
If your provider has not given you a specific APN, it means that the eSIM should work on its own: in that case, do not configure it manually and check the data settings instead. With 24/7 Spanish support, you can always ask for the exact APN for your plan before touching anything.
The eSIM still isn't working: what to check
If you have entered the correct APN and still have no internet, the problem is almost never the APN itself, but another setting or the plan's status. Review this list before assuming the eSIM is broken.
- Data line: confirm that the eSIM is selected for data, not your Spanish SIM.
- Data roaming: it must be activated for the eSIM (although it's called roaming, it's necessary here).
- Active plan: ensure it's not expired or out of data.
- Coverage: check that you are in a country covered by the plan.
- Restart: turn your mobile off and on; sometimes that's enough.
If after all this you still have no connection, check the guide on eSIM not connecting abroad and the review of common eSIM problems, which contain solutions to the most frequent failures. And if the problem arises from the beginning, when scanning the code, the guide on error scanning the QR will help you out.
Frequently asked questions
Do all eSIMs need manual APN configuration?
No. The vast majority of travel eSIMs come with the APN pre-configured in the profile you install and connect to the internet automatically. You will only need to enter it manually if the eSIM is activated and has a signal but cannot connect to the internet after checking the basic settings.
Does configuring the APN delete my data or my apps?
No. Changing the APN only affects how that line connects to the internet; it does not delete photos, apps, or your other SIM. If you make a mistake, you can edit it again or delete that APN and start over without any risk to the rest of your mobile.
Where can I find my eSIM's APN?
In the purchase email or in the plan instructions sent by your provider. If no APN appears, it usually means that the eSIM works on its own. With Spanish support, you can ask for the exact APN of your plan before configuring it.
I entered the APN but still have no internet, what do I do?
Most of the time it's not the APN. Check that the eSIM is your data line, that data roaming is activated, that the plan is valid and has data, and restart your mobile. If it still fails, contact your provider's support.
Is the APN the same on iPhone as on Android?
The APN data is the same; what changes is where it is entered. On iPhone, it's in Mobile Data → Mobile Data Network; on Android, in Mobile networks → Access Point Names (APN). On Android, you can save multiple APNs and choose which one to use.
Conclusion
Configuring an eSIM's APN is only necessary on rare occasions, and when it is, it's a matter of a couple of minutes: you go into the data settings, enter your provider's APN, and restart the connection. Before touching it, always rule out the basic settings, which resolve most failures. Choose an easy-to-configure eSIM in our store and travel connected without technical complications.
