Data & Messaging Features, Internet Tethering

My text messages are being rejected from several of my contacts, and each time I get a message: Error invalid number. Please re-send using a valid 10 digit number. But I know the numbers are valid.  Looking for ways to fix this glitch. I already rebooted the Samsung S22 phone and reset my netw

I keep getting the ERROR CODE GETSTE106 when setting up Active Armor on my S23 ULTRA. Every time, and I mean every time, there's a system update, Active Armor disables itself, and I have to go through the same thing, trying to reactive it. I've tried every iteration of the steps provided by AT&T

I have lost the ability to receive mms and txt messages from email.

My service has been so slow for the entire year that I can't even upload pages on the internet .