If you were trying to use *228 to fix a "No Service" error or to activate a new phone, follow these modern troubleshooting steps instead: 1. Restart Your Device
If you’re looking for a : The *228 code was historically used on older CDMA networks (like Verizon and U.S. Cellular) to update roaming capabilities or program a new phone. However, as carriers have moved to 4G LTE and 5G networks using SIM cards (and now eSIM), the *228 function has been deprecated. Dialing it today may result in an error message, no response, or a recording saying the feature is no longer supported. U.S. Cellular, like other carriers, now handles activation and roaming updates automatically via OTA (over-the-air) provisioning or through your account settings. 228 us cellular not working