Most users fix this error by and restarting the phone . This forces a fresh connection between your device, your network carrier, and the Google RCS servers. Step-by-Step Fixes 1. Clear Carrier Services Data
Turn on Airplane Mode, wait 30 seconds, and turn it off. This forces your phone to re-register with your carrier. samsung messages chat registration failed fixed
Incorrect date/time breaks secure registration. Most users fix this error by and restarting the phone
Settings ➔ Apps ➔ Google Play Services ➔ Storage ➔ Clear Cache 3. Update Carrier Services and Device Firmware your network carrier