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What to do if you can’t transfer eSIM phone number to new iPhone

If you can’t transfer your phone number to eSIM when setting up a new iPhone, you won’t be able to use the same number on your new device. Thankfully, the problem is usually fixable, and there are several steps you can take to resolve it. One common reason you might not be able to transfer […]

Written by Alessia Copolla

Updated: Apr 01, 2025
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If you can’t transfer your phone number to eSIM when setting up a new iPhone, you won’t be able to use the same number on your new device. Thankfully, the problem is usually fixable, and there are several steps you can take to resolve it.

One common reason you might not be able to transfer your eSIM is a mismatch between the carrier settings and the activation process. Make sure your carrier supports eSIM transfers, and verify that your number is active on the new device. Restarting your phone may also help resolve any temporary glitches.

If you’re still facing issues after trying these steps, don’t worry–there will be a solution. In this guide, we’ll cover all the easiest fixes for you to solve the issue. First, you should understand some of the causes.

Reasons why you can’t transfer phone number to a new device eSIM

If you’re having trouble transferring your phone number, there could be several reasons behind the issue.

  • Carrier doesn’t support eSIM transfers: Not all carriers allow seamless eSIM transfers between devices. Some require you to deactivate your existing eSIM and issue a new one for the new device. If your carrier doesn’t support direct transfers, you’ll need to contact them to request a new eSIM activation or QR code.
  • Your plan or account isn’t eSIM-compatible: Even if your carrier offers eSIM services, not all plans support eSIM activation. Some prepaid or older postpaid plans may still require a physical SIM. If your plan isn’t eSIM-compatible, you may need to upgrade to a newer plan that includes eSIM support.
  • Device lock or incompatibility: If your new phone is carrier-locked, it may only accept eSIM profiles from that specific network. Similarly, not all phones support eSIM, especially older models like the iPhone 8. You can check your device’s eSIM compatibility through your settings or by dialing #06# to see if an IMEI number appears. 
  • Outdated software: Your device must be running the latest software version to support eSIM transfers properly. If your device isn’t up to date, you may experience errors or missing eSIM settings. Go to Settings > General > Software Update to check for updates before attempting the transfer.
  • eSIM already active on another device: If you’ve recently used your eSIM on another device, it may still be linked to the old phone. Many carriers don’t allow the same eSIM profile to be active on multiple devices. You’ll need to remove the eSIM from your old phone first.
  • Server or network issues: Sometimes, eSIM transfers fail due to temporary carrier system outages or network issues. If you’re receiving error messages during activation, check your carrier’s website or contact support to see if there are ongoing technical problems. Waiting for a few hours and trying again may also resolve the issue. 
  • Incorrect QR code or activation details: While transferring your eSIM, you’ll need to scan a QR code or enter the details manually. If the QR code is incorrect or expired, or if you enter the activation details incorrectly, the transfer will fail. 

If you’re still unable to transfer your phone number to an international eSIM after checking these factors, your best option is to reach out to your carrier’s customer support. Here are some more common fixes.

Common fixes

There are several easy troubleshooting steps you can take before dealing with customer support. It’s worth trying them all before taking more drastic action.

Restart your device

One of the easiest fixes is to restart your phone. A reboot can clear any temporary system glitches that might be preventing eSIM transfer. It will also refresh your network connections and help the phone recognize new eSIM activation requests.

On an iPhone:

  1. Hold down the Power Button and either Volume Button until the slider appears.
  2. Slide to turn off.
  3. Wait for 30 seconds.
  4. Hold down the Power Button to reboot.

On an Android:

  1. Press and hold down the Power Button.
  2. Tap Restart.

Check for software updates

An outdated operating system can cause compatibility issues with eSIM activation. Keeping your phone updated ensures you have the latest bug fixes and carrier settings, ensuring your device supports the latest eSIM transfer protocols. 

On an iPhone:

  1. Go to Settings.
  2. Tap on General, then Software Update.
  3. If one is available, tap it to begin the installation process.
  4. Follow the on-screen instructions.

On Android:

  1. Open Settings.
  2. Tap System, then Software Update
  3. If one is available, tap it to begin the installation process.
  4. Follow the on-screen instructions.

Ensure your device is eSIM-compatible

Not all devices support eSIM, and even if yours does, it might not support all carrier eSIM services. Checking is a simple process, and it verifies whether your phone supports eSIM technology before you waste time troubleshooting.

You can check by following these steps:

  1. Go to Settings.
  2. Tap General, then About.
  3. Look for the EID number; if it’s missing, your phone doesn’t support eSIM.

Alternatively, dial *#06# and check if an EID number appears. 

If your phone isn’t eSIM-compatible, you’ll need to upgrade to a new model to transfer your number. 

Manually enter eSIM details

If scanning the QR code doesn’t work, manually entering your eSIM details might help. This avoids any errors from an unreadable or expired QR code, and it ensures precise input of activation credentials.

You can manually enter the details by following these steps:

  1. Go to your phone’s Settings.
  2. Tap Cellular (or Mobile Data), then Add eSIM.
  3. Select Enter Details Manually.
  4. Input the activation details provided by your carrier.
  5. Follow the on-screen instructions to complete activation.

Remove and reinstall your eSIM

If your eSIM is already installed but not working, removing and reinstalling it can resolve the issue. This clears potential corruption in the eSIM profile and resets carrier authentication for a fresh activation attempt.

Here’s what to do:

  1. Go to Settings, then Cellular (Mobile Data). 
  2. Locate your eSIM profile.
  3. Tap Remove eSIM and Confirm.
  4. Then, under Settings and Cellular, tap Add eSIM and follow the activation steps.

Check carrier compatibility and plan restrictions

Some carriers don’t support eSIM transfers, or your plan may not be eligible for eSIM activation. This will confirm that your carrier allows eSIM transfers and ensures your plan is compatible.

You can check by visiting your carrier’s official website or contacting customer support. If your plan doesn’t support eSIM, ask if an upgrade is required.

Disable VPN or network-blocking apps

Some VPNs and security apps interfere with eSIM activation by blocking carrier authentication requests, Disabling them ensures your carrier can communicate with your phone during activation.

This is how to disable VPN:

  1. Go to Settings.
  2. Tap VPN and Device Management.
  3. Toggle VPN Off and try activating your eSIM again.

Reset network settings

If your phone is struggling to connect to mobile data or WiFi during eSIM activation, resetting network settings can help. This clears incorrect network configurations and resets carrier and WiFi settings to default.

On an iPhone:

  1. Go to Settings.
  2. Tap General.
  3. Look for Transfer or reset iPhone.
  4. Tap Reset, then Reset Network Settings.

On an Android:

  1. Open Settings.
  2. Tap System, then Reset Options.
  3. Tap Reset Network Settings.

NOTE: This will erase all saved WiFi passwords, Bluetooth connections, and VPN configurations. 

Enable then disable Airplane Mode

Switching Airplane Mode on and off can force your phone to reconnect to the network, refreshing the eSIM activation process. You’ll need to leave Airplane Mode on for a few minutes. Follow these steps:

  1. Swipe down from the top right (iPhone) or top (Android) to access Quick Settings.
  2. Tap the Airplane Mode button to turn it on.
  3. Wait for 30-60 seconds.
  4. Follow the same steps to turn Airplane Mode off. 
  5. Try activating the eSIM again.

Contact your carrier for a new QR code

If your eSIM activation is still failing, the QR code may be expired or already used. Getting a new code provides a fresh activation link and prevents these issues.

You can get a new code by visiting your carrier’s website or mobile app. Look for the eSIM activation section or ask someone via live chat. 

Once your carrier sends a new QR code, you can follow the usual activation steps to activate the eSIM.

Factory reset

If all else fails, a factory reset might be necessary. This erases all data and settings, giving you a fresh start. It clears system-level glitches and essentially puts your phone in a clean state for activation. However, it also restores your phone to factory settings, so you may lose personal data.

Make sure your phone is fully backed up before following these steps.

On an iPhone:

  1. Go to Settings, then General.
  2. Scroll and tap Transfer or Reset iPhone.
  3. Select Erase all content and settings.
  4. Follow on-screen instructions. 

On an Android:

  1. Go to Settings, then System.
  2. Tap Reset Options.
  3. Choose Erase all data (Factory reset).
  4. Follow on-screen instructions.

How to transfer phone number to a new device?

Usually, transferring your phone number is a straightforward process. If you’re using a physical SIM card, all you need to do is take it out of the old phone and insert it into the new one. But if you’re using an eSIM, there are a few more steps.

Here’s how to do it on an iPhone and an Android.

Transferring your phone number to a new iPhone

  1. Ensure both devices are updated to the latest iOS version.
  2. Place the devices near each other and ensure they are both connected to WiFi.
  3. On the new phone, open the Settings app. Tap Cellular, then Add eSIM.
  4. Tap on the option to transfer your phone number from an old iPhone. Then tap Transfer from Nearby iPhone.
  5. A prompt will appear on the old iPhone. Tap Transfer.
  6. Enter the verification code displayed on the new device.
  7. Wait for activation. The transfer process may take a few minutes.

Transferring your phone number to a new Android device

  1. Remove the eSIM profile from your old Android device.
  2. Open Settings on the new phone.
  3. Tap Network & Internet, then SIMs.
  4. Tap Add eSIM.
  5. Scan your carrier’s QR code, then follow the on-screen prompts to install and activate it.

Frequently asked questions

How long does phone number transferring to eSIM process take?

The time required to transfer a phone number to eSIM depends on your carrier. In most cases, the process takes a few minutes to an hour if you’re using Quick Transfer on an iPhone. If you need to request a new eSIM from your carrier, it could take up to 24 hours.

Can I lose my phone number if I cannot transfer my eSIM to different device?

No, your phone number is tied to your carrier account, not the device itself. If you’re unable to transfer your eSIM, you won’t lose your number. Instead, you can request a new eSIM from your carrier or revert to a physical SIM (if supported). However, it’s essential to resolve transfer issues promptly to avoid service disruptions.

Is it possible to transfer my eSIM number without contacting my carrier?

Yes, in some cases it’s possible to transfer your number without contacting your carrier. With eSIM Quick Transfer (for iPhone) or carrier app-based eSIM activation, you may not need to contact your carrier. However, if your carrier requires a new QR code or manual activation, you’ll need to reach out for assistance.

Can I keep my phone number if I’m getting eSIM?

Yes, switching to an eSIM does not change your phone number. When activating eSIM, you simply transfer your existing number to the new digital SIM. As long as your carrier supports number portability, your number will remain the same.

I’m Alessia Coppola, and I combine my love for writing with a passion for travel and staying connected. Through my work, I guide readers to the best solutions for staying connected while on the move, covering options like eSIMs, SIMs, and pocket Wi-Fi. My goal is to help travelers stay connected easily and seamlessly, no matter where they are in the world.

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