228 Not Working Us Cellular [top] -

On older US Cellular devices, "Error 228" or "Code 228" was related to Over-the-Air Programming (OTASP) . This is the system used to activate service or update PRL (Preferred Roaming List).

If you are trying to activate a phone or update your signal on and find that dialing *228 is not working, you are likely encountering a compatibility shift in modern mobile networks. While this code was once the standard for over-the-air programming, it has largely been phased out for newer devices. 228 not working us cellular