Can't receive texts

I can’t receive texts. I can send them but not receive them.
I tried *#*#4636#*#* There was nothing written where the SMSC is. I put in the code I was given but it doesn’t stay there.

I’m getting really annoyed. It’s been like ths for months. i don’t understand phones or tech. and am just doing what I’m told but it isn’t working.

3 posts were merged into an existing topic: Won’t receive texts