AT&T 3G mobile network shutdown in the USA On February 22, 2022, the US operator AT&T will stop its 3G mobile network throughout the United States. To help you organize your trips and ensure that you can continue to make calls, send SMSs or browse the Internet from the United States*, you will need to switch to the T-MOBILE network as of February 22, 2022 when entering the country.
How to switch to the T-MOBILE network?
How to check that your smartphone is on the T-MOBILE network? The name of the T-MOBILE network must be displayed on the home screen of your smartphone.
*Continental United States, Hawaii and Alaska
Uses such as WhatsApp, FaceTime, Messenger … remain accessible on the 3G network of AT&T.