If you're switching to US Mobile and bringing your own device, you may need to change your APN settings.
To configure your MMS & data settings for Xfinity Mobile, use the Access Point Name details below.
|APN Name||Xfinity Mobile|
|APN Roaming Protocol||IPv4|
Related: Buy an Xfinity Mobile SIM card
If you haven't already switched to a low-cost carrier, MVNO's offer a great opportunity to find a cheap cell phone plan while keeping your phone, number, and coverage.