How To Activate AT&T Wireless Device

Activating AT&T Wireless Device

Ways to Activate AT&T Mobile Devices

You can activate AT&T Wireless on a new phone or tablet as well as on any unlocked mobile device you already own. AT&T Wireless works with both SIM cards and eSIM cards and allows you to use up to two SIMs with different numbers per device.

eSIM cards are the electronic equivalent of a traditional SIM card. You can activate them online over Wi-Fi. To activate an eSIM card, go here.

For new devices, AT&T Wireless uses a simple activation process that requires you to follow the on-screen instructions.

For unlocked devices you already own, you need to insert your new SIM into your device and follow a similar activation process. AT&T provides device support to help you through this process.

The AT&T Mobile Transfer app helps you to move your information to a new device. It is available on both iOS and Android. With this app, joining the AT&T Wireless network becomes easier.

Activating an AT&T Wireless Device Online

AT&T makes activating a wireless device online easy. Follow the steps below to activate your device in no time.

1. Go to the Activate your AT&T wireless device page.
2. Provide the wireless number and the billing or shipping ZIP code of the device.
3. Follow the on-screen instructions to activate your device.

Activating an AT&T PREPAID Device Online

You can also activate an AT&T PREPAID device online.

1. Go to the Activate your AT&T PREPAID device page.
2. Enter your 20-digit device SIM number.
3. Enter the IMEI number without any spaces or dashes.
4. Enter your ZIP code. If you plan to use your device in different locations, choose the ZIP code where you’ll use it the most.

If you’ve thrown away your AT&T PREPAID package, you can find the SIM and IMEI numbers on the small card under the battery cover. Before you remove the battery, don’t forget to power off your device.

How to Activate Voicemail on AT&T Wireless

Once you have activated your device, don’t forget to set up voicemail if you need it.

1. Press and hold the Voicemail key on your phone (or 1).
2. Create a voicemail password.
3. Choose your greeting, and you’re good to go.

Please note that to set up voicemail on the AT&T Wireless network, you need to do this within 60 days of activating your phone.

AT&T Wireless Availability