New phone number on iPhone X. After setup voice mailbox it doesn’t go to voicemail, but, does stop ringing.

Lost my phone and trying to understand some of the activity on my phone after lost/stolen. What are codes/57840 and 74481.  Both showed up as in

I just arrived in New Zealand fro 6 months and have purchased ATT Passport for 6 GB/month I am still confused- if cellular roaming and data is off,

Just for the last couple days, both my wife and I, on two different messaging apps, have not been getting all of our texts. It says "unsupported file

I'm no longer getting appointment reminders from Vagaro, my hairdresser says her appt says they went but I never get them anymore?? I used to??

I can no longer see delivered or read reports on my texts. I have restarted my phone and it still won't work.

My iPhone XR will not get text messages sent via Email-To-Text.    Using my 10-digit number I have send emails to @txt.att.net, @text.att.

Hello,Hoping you can help.  I am beyond disturbed on how I can barely function at work with no reception and my calls being dropped at work.  I work i

Can a text be sent to a blocked number and received at the blocked number?

I understand that (a) USB tethering can be used between a cellphone and a computer, and that, (b) to date, there have existed security-related limitat