Check your device compatibility
Bring your own device to AT&T. Order a SIM card and transfer a device to AT&T or add it to your existing account. Be sure your device is unlocked if you are transferring from another carrier.
To see if your device works on the AT&T network, enter your device and brand, or the IMEI number below.
For help finding your device’s IMEI, simply select your device and brand, choose your device from the results, and then click Continue.
Can’t find it? Dial *#06# and enter your 15 digit IMEI number in the box on the right.
If you know your device IMEI, enter it here:
* # 0 6 #
We have a plan that’s right for you
When you bring your device to AT&T, sign up for a Mobile Share AdvantageSM Plan and you can enjoy unlimited talk, text, and shared data with no overage charges. Once you use all of your high-speed data amounts, including any available Rollover Data, all data usage will be reduced to a max of 128 Kbps (2G speeds) for the rest of your bill cycle. Data usage will be impacted. Plus this plan will include Stream Saver.
Go to att.com/broadbandinfo for more information about network practices. See the Mobile Share Advantage page to learn more about this plan and to select a plan that’s right for you. DataConnect plans are also available.
Don’t know how much data you need? Use our handy Planner to help you decide.
To use data services on the AT&T network with a device from another carrier or purchased directly from the manufacturer, you may need to program the data settings. If you are using an AT&T branded device, it should already be programmed with the correct settings. For a step-by-step guide to changing your data connection settings, please visit our Programming non-AT&T devices article.
Once you have an AT&T SIM and have activated the AT&T SIM card, you can put it in any compatible, unlocked GSM device you choose.
Yes, you add a line by logging in to your account and adding a SIM, plan, and services.
Your new SIM card will be sent to you by mail and arrives ready to use. All you have to do is insert it in your phone or tablet, and you're ready to go.
To find out if your device uses a SIM card, a micro-SIM card, or a nano-SIM card, enter your device and brand, or the IMEI number, above. All versions of the iPhone® 5 use a nano-SIM card. iPhone 4/4S uses a micro-SIM. Most 4G LTE Android™ phones use a micro-SIM.
A SIM (subscriber identification module) card is embedded with a specially programmed microchip that inserts into a compatible Global System for Mobile Communications (GSM) mobile device. The SIM card encrypts transmissions and identifies the user to the mobile network. Without a SIM card inserted into the mobile equipment, only emergency calls to 911 can be made.