How to make the switch
Already a customer? Bring your own phone when you add a new line to an existing plan.
Switching is easy with AT&T bring your own device (BYOD)
See what the AT&T Business Mobile Preferred plan can do for you.
The Business Mobile Preferred unlimited phone plan is designed with mid-sized businesses in mind.
Our best plan for businesses with a mobile workforce and high data usage. Get all the features you expect in an unlimited mobile plan with one flat rate per line.
*AT&T may temporarily slow data speeds if network is busy.
Frequently asked questions
How do I bring my own phone or device to AT&T?
Bring your own device (BYOD) means you bring your own unlocked, compatible device to AT&T. Even if you didn’t buy your device from AT&T, you can activate your phone on a new AT&T plan.
Can I transfer my phone number or do I need to get a new one?
It’s easy to transfer your current phone number when you switch to AT&T. You can check to see if your phone number is eligible during checkout.
How do I know if my phone is compatible with the AT&T network?
Use your IMEI number to check compatibility during checkout.
What’s an IMEI number?
IMEI stands for International Mobile Equipment Identity. It’s a 15-digit number that’s unique to each device. Your IMEI number will determine if your device is compatible with our network. To find your IMEI number, call *#06# on your device, or go to your device settings.
What’s a SIM card or eSIM?
SIM cards are small plastic cards that are inserted into your phone. An electronic SIM is called an eSIM and can be activated over the internet. Both types of SIMs have unique ID numbers and store your personal data.
How do I activate my device after receiving the SIM card from AT&T?
Your new SIM card arrives by mail ready to use. Just insert it in your device and you’re good to go.
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