Why is my eSIM not working? Quick troubleshooting guide

When you’re trying to install an eSIM, it can be frustrating to see an activation error or find that you have no data or signal. You might worry that you chose the wrong plan or that your phone isn't compatible. On top of this, you have to configure network selection or APN settings, especially when traveling internationally.

If you’re experiencing problems with your eSIM, it’s important to know that these problems are usually easy to solve. Often, the reason is something simple like forgetting you turned on airplane mode or selecting the wrong SIM for mobile data in your settings. In other cases, the source is a temporary network error. Once you identify the underlying issue, it’s easy to fix activation problems and slow data speeds.

Our guide will help you determine the cause of your eSIM not working and show you what to do next, step by step. Whether you’re using an eSIM home or abroad, we’ll break down common situations and explain when contacting support is necessary.

These are the most common reasons why your eSIM may not be functioning properly:

• Device and settings issues. Your phone may have misconfigured settings, such as having airplane mode turned on or data roaming turned off. Sometimes you just need to restart your phone to be able to establish a connection.
• Activation and compatibility issues. If your device doesn’t support eSIM or has a carrier lock, the eSIM may fail to activate. In some cases, the explanation might be an expired QR code or an interruption during installation.
• Carrier or network problems. Your carrier may be experiencing a temporary outage or network maintenance in your area. Slow speeds and a weak signal can also happen if the network becomes congested or if you connect to a weaker partner network while traveling.
• Account and billing issues. The carrier can block your line if you haven’t paid your bills or if your prepaid plan expired. You may also encounter a block if your device gets reported stolen or lost. When this happens, the eSIM appears installed but won’t connect to data.

Find the solution you need

If you’re seeing any of these messages on your phone, start by checking out our quick troubleshooting guidance:

How do I get my eSIM to work?

Following these basic steps will typically revive your eSIM.

Device and settings fixes

This is your starting point (and most often what’s causing an eSIM failure). Here’s what you can do.

1. Toggle airplane mode on and off. In your settings, turn airplane mode on, wait about 10 seconds, and then turn it back off. This forces your phone to reconnect to nearby cell towers.
2. Restart your device. The fix can be as simple as this. A quick restart often solves minor connection problems.
3. Make sure your eSIM is on. Go to your cell phone settings to confirm the eSIM is active.
   • On iPhone, go to Settings > Cellular or Mobile Data > SIMs to access your eSIM.
   • On Android, go to Settings > Connections or Networks & Internet > SIM manager to check your eSIM.
4. Enable the right eSIM for data. Check that you’ve selected the correct SIM for mobile data. If you use dual SIM, your phone may still be using your primary SIM for data instead of the eSIM.
5. Turn on data roaming. If you’re using a travel eSIM, turn on data roaming for that line. Travel eSIMs like holiday.com require roaming to connect to local partner networks. Turning it on won’t result in charges by your home carrier.
6. Update your phone’s software. Older software versions can sometimes interfere with eSIM activation or network connection, so make sure to install an update, if available.
7. Reset your network settings. This removes saved Wi-Fi networks and Bluetooth pairings (don’t worry, it doesn’t delete your photos or apps). It forces your phone to create a fresh connection to the carrier.
   • On iPhone, go to Settings > General. Scroll to the bottom and tap Transfer or Reset iPhone. Tap Reset and select Reset Network Settings.
   • On Android, go to Settings > System or General Management. Tap Reset Options or Reset and select Reset Bluetooth & Wi-Fi or Reset network settings.

Android menu layouts differ from model to model. You can quickly find this by typing "reset network" into the search bar on the main Settings screen.

Network configuration fixes

Network issues can also cause problems with your eSIM. You can try the following steps:

1. Check the APN settings. Access Point Name (APN) settings are important if you’re using a travel eSIM. They tell your phone how to connect to mobile data. If they’re missing or incorrect, data won’t work even if you have a signal. Some eSIM providers automatically configure these settings, but sometimes you have to configure them yourself to unlock data access abroad. You’ll need to follow your provider’s instructions and remember to double-check for typos.
2. Change locations. If data is very slow, try moving to a different location. Buildings, underground areas, and remote regions can weaken signal strength.
3. Choose a network manually. If you can’t connect while traveling or the signal is weak, try personally selecting a network instead of using automatic selection. Your eSIM may connect to a slower partner network by default, and some eSIMs won’t work unless they’re connected to a specific local network.
   • On iPhone, go to Settings > Cellular or Mobile Data > SIMs. Tap Network Selection and toggle the Automatic switch off. Wait a few moments until a list of local carriers appears, then choose the one your provider recommends.
   • On Android, go to Settings > Connections or Networks & Internet > Mobile networks. Tap Network operators and choose your eSIM if prompted. Turn off the Select automatically toggle and pick a carrier from the list.
4. Check your data limit. Rather than cutting off data completely, some eSIM plans reduce speeds after a certain amount of use. If your data is slow, you may have reached the high-speed limit.

Activation and compatibility fixes

Checking compatibility before using an eSIM is crucial:

1. Ensure your phone supports eSIM. Most newer models support eSIM technology, but some older devices only support physical SIM cards. The fastest way to check this is to dial *#06# and look for an EID number, which is your device’s eSIM identification number. If you see an EID, it means that your phone supports eSIM.
2. Ensure your phone is carrier-unlocked. If you have a carrier-locked phone, it may reject eSIMs from other providers. You can check whether your phone is carrier-unlocked in your settings.
   • On iPhone, navigate to Settings > General > About and scroll down to Carrier Lock. If it says No SIM restrictions, your phone is unlocked.
   • On Android, open Settings > Connections or Networks & Internet > Mobile networks. Tap Network operators and turn off Select automatically. If multiple networks appear, your phone isn’t locked to a specific carrier.
3. Consider activation types. eSIM activation requires internet access, so make sure you’re connected to a stable Wi-Fi network during installation. However, bear in mind that eSIMs activate differently, depending on the provider. For instance, if you plan on using a travel eSIM like holiday.com, you can install it before your trip, but you don’t activate it until you arrive at your chosen destination by enabling the eSIM data line.
4. Be mindful of activation times. If installation stops halfway, restart your phone and try again. In some cases, the carrier’s system needs time to complete activation, so waiting a few minutes can also help.

Carrier outage and provisioning

Sometimes the eSIM issue isn’t about your phone at all. Carriers occasionally experience outages or perform maintenance. When this happens, you may see no service or slow speeds.

• Check for outages on websites and social media. Check your carrier’s website or social media pages for outage reports. If someone near you with the same carrier has no signal, it’s likely a network issue.
• Be patient with carrier provisioning. Newly activated eSIMs may also take time to fully provision on the carrier’s system. If you just installed the eSIM, give it a short time and restart your phone again. If you see SIM Not Provisioned, it usually means the carrier hasn’t activated your line yet or has placed a block on the account. If your device was reported lost or stolen, the carrier may have blocked it for security reasons. In this case, only the carrier can remove the restriction.

Account and billing considerations

If your eSIM suddenly stops working, check your account status:

• For postpaid plans: Check if you paid the bill and whether your network provider suspended your line. Carriers often block data when payments are overdue.
• For prepaid plans: Make sure your plan hasn’t expired and that you still have data remaining.

When to contact customer support

If you’ve tried all the steps above and your eSIM still doesn’t work, it may be time to reach out to your provider. You should contact support if activation continues to fail after multiple attempts or if you think the QR code has expired.

As a last resort, you can try deleting the eSIM and reinstalling it. Before deleting, make sure you still have access to the QR code or installation details. Also, keep in mind that some eSIMs only support one-time installation. If you’re unsure, it’s best to contact your provider before deleting it to avoid losing access. After reinstalling your eSIM, restart your phone and allow a few minutes for the network to connect.

You may also claim a refund if the eSIM never activates, or if there’s a confirmed technical issue on the provider’s side that they can’t resolve.

Fix eSIM issues quickly when they happen

eSIM technology depends on software and remote activation, which can make issues feel more complicated than with a physical SIM. However, once you identify the type of problem, the solution becomes much clearer.

In case of an eSIM not working, the problem is usually related to phone settings, activation details, or a temporary network issue. Many of these situations are fixable within a few minutes by checking that your device’s settings are properly configured. You shouldn’t worry about wasting your money. eSIM issues are common and fixing them is often much simpler than it first appears.