Hey @Krys19 :),
Welcome to the Community!
In order for us to resolve this effectively, we would need a bit more details.
1) What happens when you attempt to send a text message? Do you receive an error message?
2) Are your other services impacted? (Calls, data)
3) Is it the first time this happens? If yes, for how long has this been occuring?
Also, we suggest to try to reset your network settings to see if this helps.
Keep the community posted. Thanks.