Have you gone from iPhone to new iPhone?

No Samsund to new Samsung phone.

Hi ​@Jetski Ems 

Thanks for getting in touch.

We are sorry to hear you are experiencing issues with texts messages. 

If you open your Messaging app and click Settings > Chat Features does it show the correct number? If it shows the incorrect one, then head to: https://messages.google.com/disable-chat and you should be able to de-register the number. Once done, turn off the Chat Features and the phone.

Wait a few minutes and turn the device back on and re-enable Chat Features it should let you re-register/update to the correct number.

Thanks

Natalie 

I do not have chat features as an option in my messaging app? Is this Google messaging app or Samsung messaging app?

Hey there ​@Jetski Ems, does the below help at all please?

1) Open Messages, go to Settings (top right, Message Settings), open "Chat Features" or "RCS Chats", verify if this is the correct number or not.

2) If it shows the incorrect one, then head to: https://messages.google.com/disable-chat and you should be able to unregister the number. Once done, turn off the Chat Features/RCS and the phone. Wait a few minutes and turn the device back on and re-enable Chat Features/RCS it should let you re-register/update to the correct number. Alternatively, you can turn Chat Features/RCS off and test SMS after this.

Thanks,

Tyler