What happens when you transfer an eSIM

An eSIM is a digital SIM card stored on your phone's chip rather than a physical card. When you transfer an eSIM to a new phone, you are moving your carrier service from one device to another. The process involves downloading your carrier profile onto the new phone, and your old phone loses that service once the transfer completes.

Most carriers allow you to transfer an eSIM yourself through their app or website. Some require you to contact customer service. The transfer usually takes a few minutes to an hour, though a few carriers may take up to 24 hours to activate the service on the new device.

Your new phone must support eSIM technology — most modern smartphones do, but some older or budget models do not. Check your phone's specifications before you start. You will also need your carrier account login or a confirmation code from your carrier to complete the transfer.

Key Takeaways

  • You transfer an eSIM by downloading your carrier profile to a new phone through your carrier's app, website, or customer service.
  • Your new phone must support eSIM; check the manufacturer's specifications if you are unsure.
  • Most transfers take minutes to an hour, though some carriers may take up to 24 hours to activate service on the new device.
  • You will need your carrier account login, a confirmation code, or your phone number and account PIN to authorize the transfer.
  • Once the transfer completes, your old phone will no longer have carrier service on that eSIM.

Steps to transfer through your carrier's app or website

Log into your carrier's mobile app or visit their website from a computer or tablet. Look for a section labeled "Manage eSIM," "Switch Device," "Transfer eSIM," or "Activate eSIM." The exact wording varies by carrier.

Select the eSIM you want to transfer and choose the option to move it to a new phone. The carrier will ask you to confirm your identity — this usually means entering your account PIN, the last four digits of your Social Security number, or a code sent to your email or phone number. Some carriers ask you to scan a QR code with your new phone instead.

On your new phone, open Settings and look for "Cellular," "Mobile," or "SIM" options. Select "Add Cellular Plan" or "Add eSIM." If your carrier sent you a QR code, use your phone's camera to scan it. If not, you may need to enter a confirmation code manually or sign into your carrier account on the new phone to download the profile.

Once the profile downloads, your new phone will show carrier signal. Your old phone will lose service on that eSIM within a few minutes. Do not power off either phone during the transfer.

Transferring an eSIM through customer service

If your carrier does not offer a self-service transfer option, or if the app or website method does not work, contact your carrier's customer service by phone, chat, or in person at a store. Have your account number, phone number, and the phone number or model of your new device ready.

Tell the representative you want to transfer your eSIM to a new phone. They will verify your identity and may ask for your account PIN or a code sent to your email. They will then send a QR code or confirmation code to your email or phone, or they may initiate the transfer remotely.

Follow the same steps on your new phone to scan the QR code or enter the confirmation code. The representative may stay on the line to confirm the transfer completed. If the transfer does not work after 10 minutes, ask the representative to try again or to send a new code.

What to do if your new phone does not support eSIM

If your new phone does not have eSIM capability, you cannot transfer your eSIM to it. Instead, contact your carrier and ask them to issue you a physical SIM card for that phone. Most carriers send physical SIM cards free of charge within 5 to 10 business days.

While you wait for the physical SIM card, you can keep using your old phone with the eSIM, or ask your carrier if they can temporarily activate service on a loaner phone. Once the physical SIM arrives, insert it into your new phone and follow your carrier's instructions to activate it.

If you plan to use multiple phones regularly, ask your carrier whether they support dual SIM setups — some phones have both an eSIM slot and a physical SIM slot, which lets you keep two phone numbers active at once.

Troubleshooting a failed eSIM transfer

If your new phone does not show carrier signal after you complete the transfer steps, first check that both phones have Wi-Fi or cellular data. Restart both phones and wait 10 minutes, then check again.

If the new phone still has no signal, go back to Settings and look for the eSIM profile. On iPhone, go to Settings > Cellular > Cellular Plans and check whether the plan shows as "Pending" or "Active." On Android, go to Settings > Network & Internet > SIM Manager and look for the same status. If it shows "Pending," wait another 15 minutes and check again.

If the status does not change to "Active," or if the profile does not appear at all, contact your carrier's customer service. Have the IMEI number of your new phone ready — you can find this in Settings under "About Phone" or "Device Information." The representative may need to resend the eSIM profile or troubleshoot why the transfer did not complete.

Keeping your old phone active during the transfer

If you want to keep using your old phone after the transfer, you cannot use the same eSIM on both devices at once. Once the transfer completes, the eSIM works only on the new phone.

To keep your old phone active, contact your carrier before you transfer the eSIM and ask them to add a second line or to issue a physical SIM card for the old phone. This costs extra per month. Alternatively, you can use the old phone on Wi-Fi only after the transfer, without carrier service.

Some carriers offer a feature called "Number Transfer" or "Bring Your Own Number" that lets you move your phone number to a new carrier while keeping your old phone on a different carrier's service. This is different from transferring an eSIM and requires setting up a new account with the second carrier.

Frequently Asked Questions

Do I lose my data when I transfer an eSIM?

No. Transferring an eSIM only moves your carrier service, not your photos, contacts, or apps. Back up your data separately using iCloud, Google Drive, or your phone's built-in backup before you transfer the eSIM, in case something goes wrong during the process.

Can I transfer an eSIM to someone else's phone?

No. Your carrier will only transfer an eSIM to a phone registered to your account. If you want to give your phone to someone else, you must contact your carrier first to remove the eSIM and cancel or transfer the service to a new account.

What if I transfer the eSIM by mistake?

Contact your carrier immediately. If the transfer just completed, they may be able to reverse it and move the eSIM back to your old phone within a few hours. The longer you wait, the harder it becomes to undo. Have your account number ready when you call.

Can I transfer an eSIM between different carriers?

No. An eSIM is locked to your current carrier. To switch carriers, you must contact your new carrier and ask them to issue you a new eSIM or physical SIM card. Your old carrier will deactivate your service once you activate service with the new carrier.

Do I need Wi-Fi to transfer an eSIM?

Yes. Your new phone needs Wi-Fi or cellular data to download the eSIM profile. If your old phone still has service, you can use its hotspot to give your new phone internet access during the transfer.