đź“¶ New device or SIM? Activate your AT&T service online in minutes.
Begin by unboxing your new AT&T phone or SIM kit.
Make sure you have:
Your phone or device
The SIM card
Any necessary accessories like the SIM tool or charger
Turn off your phone.
Use the SIM tool to open the SIM tray.
Carefully insert your AT&T SIM card into the tray.
Close the tray and turn your phone back on.
Open a browser and go to att.com/activate.
This page helps you set up and link your SIM card or device to your AT&T account.
Follow the on-screen instructions:
Enter your AT&T phone number or SIM/IMEI number
Confirm your account information
Review and submit to complete setup
Once setup is complete, restart your phone.
Make a quick test call or open a website to confirm your AT&T service is active and working properly.