Have a new iPhone 15? Update to iOS 17.0.2 before transferring content from your old device. Learn more
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Activate and use your device
Learn how to get your device running on our network. It can be one you bought from us or a compatible, unlocked device you already own.
INSTRUCTIONS & INFODownload an eSIM and activate your device
Do you need to activate an eSIM for AT&T Wireless℠? Make sure your device is on an active plan, then download the eSIM over Wi-Fi®.
- Turn your device on.
- Follow the prompts on your device. Want detailed steps for your device? Get eSIM download instructions
Good to know:
- Activating a new iPhone 15? Update to iOS 17.0.2 before transferring data
- Transferring your number from another provider? Go to att.com/activatenow before turning your phone on.
- Bringing your device to AT&T? Request your new eSIM
- Have an AT&T Prepaid® plan? Contact us to activate your eSIM
Activate your device with a physical SIM
Many devices use a physical SIM card that is already inserted in the device. If you use a different SIM, you might not be able to access our wireless network or use all our network features.
If your SIM isn’t already inserted, learn how to put it in.
Have a new phone and a new number? You’re likely already activated. Turn on your device and make a test call. If you can’t make a call, activate your device.
If your SIM isn’t already inserted, learn how to put it in.
- Go to Device Support.
- Choose your device.
- Scroll to Getting started and select Hardware & phone details.
- Choose Insert or remove SIM card and follow the steps.
Have a new phone and a new number? You’re likely already activated. Turn on your device and make a test call. If you can’t make a call, activate your device.
FREQUENTLY ASKED QUESTIONS
Can I set up a device if I didn’t buy it from AT&T? 
Can I activate an AT&T Certified Pre-Owned phone online?
