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How To Activate AT&T SIM Card Online

AT&T is one of the leading telecom companies in the U.S., with a variety of calling plans and a wide network across the country. One of the ways that it makes it easy to use its service is the fact that it allows new subscribers to activate their SIM card online, meaning that they are not required to visit the store to activate their new SIM card. Continue reading to find out how to do so.

Activate AT&T SIM Card Online

To activate your new SIM card online, you will need your mobile phone's IMEI and SIM card numbers. To find your phone's IMEI number, dial *#06# on the dial pad. Dual-SIM phones show two IMEI numbers:


The SIM card number can be copied from the card's welcome kit. It is printed next to ICCID, CSN, or ID:

Next, open AT&T's SIM activation page:


Enter your SIM Card ID and IMEI number, and click the Continue button. Follow the online instructions to activate the SIM card.

AT&T Customer Care Number

If you are unable to activate the SIM card online, call the customer care number from any working AT&T phone. If you are in the U.S., call 1-800-331-0500, if outside the U.S., call 1-314-925-6925.

Image: © AT&T.
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