Unable to activate the ATT online service?

• You can choose: If you can’t activate the ATT online.

• Contact AT&T Customer Support.

• Visit the nearest AT&T store.

Replace with new AT&T SIM.

If connected to the mobile connection was already restored, it is important to replace a lost, stolen, or broken SIM card. Sim cards are small plastic chip cards which are used for storing AT&T SIM data such as contacts and call logs in cell phones and work in GSM network frequencies for maintaining service provider data and phone number. Usually, the SIM cards are provided on their network by the network service provider and the lost card information must be programmed to replace the SIM cards.

How to AT&T SIM & AT&T Prepaid activation was replaced

• Customer Care for all AT&T services. You can make sure the lost card is disabled and no accidental use occurs if the SIM card is lost or stolen by contacting the SIM service provider. The nearest retail store that can provide an alternate SIM card can also be found through AT&T Customer service.

• Locate the AT&T service provider’s retail shop. SIM cards can be shipped by mail, but the lost card can be replaced quickly if you prefer a nearby shop.

• Call now for a SIM replacement card to ensure that the replacement SIM card has the right contact numbers, user information, and network settings programmed by the service provider.

• Some retail stores will deliver on-site to replace the new cards, and others can deliver by mail.

• Please insert the new SIM card into your phone. Under the phone battery, you normally find the SIM card slots.