If you previously used Google Messages or switched from an iPhone, your number may still be linked to those RCS/iMessage servers, preventing Samsung Messages from taking over the "chat" connection. Visit the official Google RCS Disable Portal .
It's crucial to know that RCS support for Samsung Messages varies widely: samsung messages chat registration failed fixed
Note: This will erase saved Wi-Fi passwords and Bluetooth pairings. If you previously used Google Messages or switched
Weak cellular signals or fluctuating Wi-Fi connections interrupt the background registration process. Tap the three-dot menu ( ) in the top right corner
Sometimes you need to tell the system to forget your number and register it again. Open . Tap the three-dot menu ( ) in the top right corner. Go to Settings . Tap Chat settings (or RCS Chats ). Turn off "Turn on chat features." Restart your phone.
If you have ever used Google Messages on your phone, a conflict is highly likely.