As carriers like US Cellular move toward 5G infrastructure, the legacy systems that supported *228 commands are being decommissioned. How to Fix US Cellular Activation and Signal Issues
Dialing *228 on a 4G/5G device can actually cause service issues, such as "frying" or misconfiguring the SIM card, which might lock the device to slower 3G speeds. 228 not working us cellular
You are likely thinking of the Unihertz Jelly 2 (often referred to as the "Jelly 2" or model "228" in some listings). This is a tiny Android smartphone. As carriers like US Cellular move toward 5G
| User goal | Modern alternative | |-----------|--------------------| | Activate new phone | Use , My Account app , or call customer service | | Update roaming / network settings | Check for carrier settings update (iOS: Settings > General > About; Android: Settings > System > System update) | | Fix “no service” after activation | Restart phone , re-insert SIM, or dial *#*#72786#*#* (Android reprogramming) / ##25327# (iOS) | | PRL update | No longer needed – LTE/5G uses SIM-based PLMN selection | This is a tiny Android smartphone