Just wondering if anyone else has run into this issue?

We've updated a Galaxy S5 to Android 7.1.2 and it's on the Skinny network. I can make and receive calls, send text messages, but not receive text messages.

I've checked in the *#*#4636#*#* menu and the number there appears to be correct, it says "6427743860",145

I'd compare it to my Note 3 running Samsung's edition of android also on Skinny, but it doesn't seem to bring up the menu.

We've got a backup to go back to the old Samsung android on the S5 if needed, but hopefully we can get this going as everything else seems to work perfectly.

Any thoughts? Thanks! :)