Activate your new phone, smartphone, iPhone, tablet, SIM card, insurance replacement, or other AT T wireless device.
To activate your new GoPhone service, enter your AT T SIM card number and select Continue.
SIM Cards – Get an AT&T SIM Card for Your Unlocked Device
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Congratulations on your new device! Here's everything you need to know to get your new phone, tablet, or other device up and running. Make sure the SIM card is installed and the device is turned on. Place an outgoing call or start a data session without using Wi-Fi. If the connection is successful, your device is active. Go to att.com/activations. Select your Activate Your AT&T Wireless Phone. Enter the Wireless number and Billing or shipping ZIP code of the phone you're activating.
SIM Cards. Get a new SIM card for your unlocked device or replacement SIM for customers who have a cell phone or mobile device on the AT T network.
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Service activation required. Bring your own phone or tablet to AT&T. Bring Your Own Device: Device must be compatible with the AT&T network and capable of using an AT&T SIM Card. If necessary, you should unlock your device so that it can use an AT&T SIM Card prior to porting your existing service. AT&T does not guarantee the performance of non-branded AT&T devices. General Wireless Service Terms: Subject to Wireless Customer Agreement or applicable Business Agreement. A deposit may apply.
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