How to Activate AT&T Online

Steps to Activate AT&T Online 

Turn on your AT&T device
Make sure your phone or tablet is fully charged.

Insert the AT&T SIM card
If you’re using a physical SIM, insert it properly into your device.
For eSIM, ensure your device supports eSIM activation.

Connect to the internet
Use a stable Wi-Fi connection or mobile data to avoid interruptions.

Visit the AT&T activation page
Open a web browser and go to the official Att activate activation page.

Enter your activation details
You may be asked to provide:

• AT&T phone number or SIM number

• Order or account number

• ZIP code or billing details
  
  

Follow the on screen instructions
Confirm your information and submit the activation request.

Restart your device
Restarting helps apply Att activate network settings correctly.

Activate AT&T Prepaid Online

• Choose your prepaid plan

• Complete the first payment

• Confirm your number and device

• Restart your phone after activation

Prepaid AT&T online activation usually completes within minutes.

How Long Does AT&T Online Activation Take?

• Most devices: 5–10 minutes

• Number transfer or prepaid: Up to 24 hours

You’ll receive a confirmation once activation is complete.

Final Tip

Keep your SIM number, order ID, and billing ZIP code ready before starting Att activate online activation for a smooth and fast setup.