How To Activate a Phone on ATT

How To Activate a Phone on ATT

What is ATT?

AT&T Inc (AT&T) is a provider of telecommunications, media, and technology services. The company offers wireless communications, data/broadband and internet services, local and long-distance telephone services, telecommunications equipment, managed networking, and wholesale services.

How To Activate a Phone on ATT

  • Insert the SIM card – You can also find this information in your user manual.
  • Go to
  • Select Activate your device for AT&T wireless device.
  • Enter the required information.
  • Select Continue.
  • Follow the prompts to complete your activation.

Frequently Asked Questions

Can I activate my ATT phone myself?

You’ll need to visit our AT&T activation portal online in order to activate your device with us. You have options to choose whether you need to activate a device or SIM card.

How do I activate my US Cellular phone myself?

Turn on your device & connect to WiFi. Go to and follow the two-step process for activation.

Can I activate my cell phone online?

If you’re activating a prepaid plan online, you will likely need to enter an Activation Code. This is typically included with your SIM purchase. If you don’t have one, you’ll need to call the number below for your carrier, or go into a retail store.

How does phone activation work?

If you are activating a new phone, you may need to activate the SIM card with your carrier. To do this, you need to contact your carrier and provide them with your SIM card number, phone model, and other information. Your carrier will then activate the SIM card, and your phone will be ready to use.

How long does it take to activate ATT?

If you have already accepted Terms and Conditions, AT&T may activate for you within 7 days of shipment.

Does AT&T have free activation?

An activation fee is for adding a new line of service. There is no activation fee for a replacement phone or an upgrade. There is however an upgrade fee if you buy a new phone from AT&T.

How do I activate my iPhone?

Press and hold the device’s power button until you see the Apple logo. You’ll then see “Hello” in many languages. Follow the onscreen instructions to get started. If you’re blind or have low vision, you can turn on VoiceOver or Zoom from the Hello screen.

How do I activate my number on my iPhone?

On your new iPhone, go to Settings > Cellular, tap Set Up Cellular or Add eSIM, then tap Transfer From Nearby iPhone or choose a phone number. On your previous iPhone, follow the instructions to confirm the transfer.

How long does it take for a phone to activate?

Typically, you’ll be able to use the device within a few minutes. However, it may take up to 24 hours. My device activation failed. 

How do I activate my AT&T 5g SIM card?

If you’re unable to activate the card online, you can give AT&T a call from a working phone or visit an authorized AT&T store during regular business hours. AT&T support is available 24/7. If you’re in the US, dial 1-800-331-0500. If you’re outside of the US, dial 1-314-925-6925.