To add a device to your account:- Go to your myAT&T account overview.
- Open the My wireless section and select Add a device under My devices & add-ons.
- Find Bring your own device and select Get started.
- Follow the prompts to order a new AT&T SIM card.
Next stepsGood to know: If you start your number transfer in an AT&T store, the transfer completes in 1-3 business hours. If you ordered your new phone or SIM card online or over the phone, the transfer can take 3-5 business days. Non-wireless number transfers take a minimum of 5-7 business days.
Check your transfer status
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