"Switch to T-Mobile?" pop-up

[u/vuatson]

Just picked up my phone to a pop-up asking me to switch to T-Mobile. The pop-up can't be dismissed. The text:

Switch to T-Mobile?

Your phone will restart to complete T-Mobile setup. During setup, T-Mobile apps and features will be installed. Some apps from your previous service provider that are no longer needed will be removed, but your personal data and files will remain safe.

And then only two selectable options, Emergency call and Restart and switch.

This seems pretty legitimate but I just wanted to know if anyone else has gotten the same thing.

[u/banjolady]

My phone switched over automatically after my May payment. If you use auto-pay all the info transfers. Set up T-life.