Data & Messaging Features, Internet Tethering

As a courtesy my library provides text notifications for its users. However, all notifications to the users with AT&T mobile accounts aren't going through.  They all get bounced back with the same error.  This doesn't happen to any of our users who have other cell phone providers.&nbs

Compre un Iphone 13 pro Max por ebay pero el telefono vino parece reportado en lista negra de AT&T, estoy teniendo problemas con eso porque no me levanta se?al en ninguna red. Habra solucion para eso?

Both phones on same account. My wife's messages are appearing on my phone not addressed to me.

Why is this app consuming data? It's supposed to be data free. I have directv and AT&T services. My high speed data is completely used up with me knowing. It's supposed to be data free viewing. What gives? This whole directv AT&T venture is fraudulent.

I've had this issue ever since I ported my number to At&T in the beginning of 2024.

For several days my Microsoft Exchange server account has failed to send SMS messages for calendar events. I then attempted to send an email to my phone, and I got an error that reads as follows. Suggestions? <recipientphone#>@txt.att.net mx3b.txt.att.netRemote Server returned '554 5.2.0 &

My texts messages started failing and after many troubleshooting attempts I found out that when advanced messaging is on, the message says failed. When advanced messaging is off, it seems as though it sent but the recipient didn't get the message. I also am not recieving any messages except for prom

my ability to send messages to non-iPhone users has stopped. I’ve toggled turning mms/sms on/off, reset network settings etc but it’s not working. I heard there may be a setting on ATTs end that may have been corrupted if I’m on an older plan. Any advice?

I have a galaxy s24 ultra. I have 5 bars but do not have 4 or 5g. I cannot make or receive calls and text, nor can I use the internet. The service will work then stop and then start working again all day sitting in the same places I have always had service. My work I-pad is also uses att and it work

Hello, I travel to and fro America a lot, which means I need a SIM that I can use after a period of inactivity. Any suggestions on what I should do?