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Swap active SIM cards between devices

Find out how to switch an active SIM card to another device.

Quick answer

FREQUENTLY ASKED QUESTIONS

What's a SIM card?

What’s an eSIM?

DETAILED STEPS

Before you switch SIM cards

Make sure the SIM cards for both devices are the same size.
Check if you already have a compatible data plan. If not, add one.
Find out how to get a replacement SIM card.
Find out how to transfer your info to a new device.

Have an eSIM? You can’t move it to another device, so you’ll have to go to a store, or call us to get a new one.

Important: After you swap your SIM card, make sure you call us or go to a store to let us know what new functions your device (IMEI) can do. We will update our network. Otherwise, some features like HD Voice or your voicemail may not work.

Swap active SIM cards

AT&T Wireless^SM

Turn your device off.
Remove the old SIM card.
Insert the new one.
Turn your device on.

Want help inserting your SIM card? Go to our device tutorials and choose the option for your device.

AT&T PREPAID^SM

Follow these steps before you turn off your device.

Go to att.com/myprepaid.
Select My Device and then Update Device. Don't know your IMEI for this step? Enter *#06# on your phone's keypad to get it.
Enter the SIM card number and then select Continue.

Can't find your SIM card number? Review this SIM card image

Get help with SIM card swap issues

iPhone^® doesn’t show AT&T in the status bar

Connect your device to iTunes^®. Still not working?
- Activate the SIM card in your device
- Restore your iPhone or iPad to factory settings
Go to att.com/updatedevice.
Enter the requested info, and follow the prompts to update your account with your new SIM card and IMEI number.

Data services don’t work after SIM swap

Swapping a SIM card from a basic phone to a smartphone or tablet? We’ll add a compatible data plan when the device activates on our network. Or, you can call us to add it.
Can’t use data after swapping the SIM, and confirming, or adding a data plan? You may have to program the correct access point name (APN) and multimedia messaging service (MMS) data settings.

Last updated: October 7, 2021

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