Google Messages App uses wrong phone number for RCS chats
Last Updated: 5/14/25
Problem: Your android mobile phone is using the wrong RCS chat phone number for text messages. It is using a temporary carrier phone number instead of your personal phone number you ported to the phone a long time ago.
Solution:
I ran into this. I updated the phone firmware, because it was three versions behind. then I did this:
option 1:
close all open apps.
hold finger on the app and select the info button in the corner when the menu pops up.
Select storage.
clear cache, and clear data. [WARNING: you may lose some old text messages if they are not backed up to your google account]
Open the messages app and go through the setup again. it should work now.
option 2:
in the messages app, go to settings > advanced > phone number. Put in the correct phone number
option 3: contact your carriers customer support people.