Google Messages is failing to send RCS messages for some users, throwing a '3100' error code. The problem is concentrated among Samsung Galaxy device owners, particularly those who recently switched to Google Messages from Samsung's native messaging app.
The failure appears to stem from a conflict in how RCS provisioning is handled after switching default messaging apps on Galaxy hardware. Users are not losing SMS fallback, but RCS features like read receipts, typing indicators, and high-res media transfers go dark. The specific trigger and whether a Google-side or Samsung-side update introduced it remains unconfirmed.
No official fix has shipped. The full report is worth reading for the workarounds users have found, the exact device configurations reproducing the error, and whether a factory reset or re-registration of RCS actually resolves it or just delays the failure.
[READ ORIGINAL →]