Follow our simple step-by-step guide to find the best cell phone provider for you. Switch to AT&T without any hassle.
How to switch to AT&T from another carrier
Switching your cell phone carrier is simple. Here are three key steps to ensure the process is seamless.
1. Find the best cell phone plan for you
When choosing a plan, consider key factors such as:
AT&T’s top unlimited data plans include AT&T Unlimited Starter® SL, Unlimited Extra® EL, and Unlimited Premium® PL. With AT&T Unlimited Your Way®, you can mix and match any of our best unlimited* plans.1
All our top unlimited* plans include AT&T 5GSM,2 AT&T ActiveArmor® (our advanced security service),3 and hotspot data.
*After 75GB, AT&T may temporarily slow data speeds if the network is busy.
Learn more tips for choosing the best unlimited plan for you
Once you’ve picked a plan that meets your needs, make sure it fits your budget. Looking for deals and discounts on cell phone service? Here are some popular ways to save:
Save on your monthly bill when you switch to AT&T and bring your own smartphone. Learn more about our best switcher offer
Enjoy benefits from the AT&T Signature Program for eligible employees, teachers, students, members of the military, first responders, nurses, physicians, union members and more.
Bundle your AT&T services and save on your monthly bill.
Get our lower price for eligible seniors with AT&T’s 55+ plan.
Consider an AT&T Prepaid® plan.
2. Bring your own phone or buy a new phone
You have two options when you switch wireless carriers:
Buy a new phone. Both new and existing customers get our best deals on every smartphone when choosing an unlimited plan. You might even be eligible to get the latest iPhone on us.4
Bring your own phone. Make sure your phone is unlocked and compatible with the network. Once you pick a plan and back up your data, you’re ready to go.
3. Keep your phone number when you switch
Transferring (or porting) your number to AT&T is easy. When you decide to switch, don’t cancel your service with your old carrier first. Instead, once you’ve picked a new plan and phone, choose Keep my number at checkout.
Have these items ready: the name on your current cell phone account, your phone number, and your number transfer PIN or account code (if applicable). Get detailed instructions on gathering the required information from your current wireless provider
If you’re bringing your own device, don’t forget the AT&T SIM card we sent you.
Your current phone service will stay active until you authorize the transfer and the process is complete. Once your new AT&T service is active, you’ll receive an SMS confirmation. Your old account and service should automatically cancel. However, it’s a good idea to call your old wireless carrier to confirm your service has been canceled.
If there’s an issue with your transfer, you’ll receive an SMS identifying the issue.
Once your new service is active, you may experience a brief period of "mixed service" lasting up to four hours. During this time, your old device might still receive calls, while your new device can make calls. This happens because it takes time for your phone number to transition through the systems between your current wireless provider and AT&T.
SMS and MMS messages may take up to eight hours to function properly during this process, but your mobile data will work immediately on your new phone after activation.
1AT&T Unlimited Premium® PL, AT&T Unlimited Extra® EL, & AT&T Unlimited Starter® SL.
2Req’s compatible plan & device. Coverage not available everywhere. Learn more at att.com/5Gforyou.
3Compatible device for 5G, & AT&T ActiveArmor app access. Download of app req'd. Some mobile security features not available while roaming internationally. 5G coverage not available everywhere. Learn more at att.com/5Gforyou.
4Req’s trade-in of iPhone 12 or higher. Savings via bill credits. Speed restrictions & other terms apply.
Make sure not to cancel your current service until your switch to AT&T is finalized. Canceling too early could result in losing your phone number. Keep your service active until the transfer is complete.
Will AT&T pay off my phone when I switch?
While we don’t cover your old phone’s payoff, switching to AT&T means you could save on your monthly bill or get the latest iPhone on us. Check out our best offers for switchers
Can I switch phone carriers for free?
Switching your phone carrier is usually free and easy. Before you make the move, keep these important points in mind:
Don’t forget to explore your new carrier’s switcher deals—you could qualify for discounted cell phone service and savings on popular devices!
At AT&T, all customers—new and existing—enjoy our best deals on every smartphone when you choose an unlimited plan. Check out the latest deals on popular phones, like iPhone and Samsung Galaxy devices.
What should I know before switching phone carriers?
Thinking about switching carriers? Here are a few important things to keep in mind:
Have more questions? Visit our wireless support page to chat, call, or drop by a store. Our experts are happy to assist!
Before canceling your current service, be sure your phone number has successfully transferred to AT&T.
How to bring your own phone (BYOP) to AT&T
Switching carriers? You can keep your current phone and simply add an AT&T wireless plan. You bring the phone, and we provide the service.
Here’s how to get started:
Why should you bring your own phone to AT&T?
Ready to make the switch? Learn more about bringing your own phone to AT&T
What’s the cheapest unlimited plan at AT&T?
The most affordable unlimited plan is the Unlimited Starter SL plan. It includes unlimited talk, text, and data. (AT&T may temporarily slow data speeds if the network is busy.)
This plan also offers 5GB of mobile hotspot data per line per month1 and includes AT&T ActiveArmor® security to help protect your device.
Plan pricing varies depending on the number of lines. Configure your plan and check pricing on our best unlimited plans
1After 5GB, speeds slowed to a maximum of 128Kbps.