I cannot send text messages. If I reply to a received message, I get an error message telling me to enter a valid 10 digit phone number, even though t

I have a Xiaomi Mi9 smartphone that used to work on the t-mobile network. The other day I bought an AT&T sim card for $ 10 in 7 Elevan  store. Along w

My husband has a message from his dad who recently passed away saved in hos voicemail our account has been cancelled due to covid 19 financial hardshi

Callers keep telling me to setup my voicemail but everytime i try it just disconnects. Ive tried the recommended ways to set it up with no success. I

I am trying to login to my at&t account online. I put my correct number and password. But it tells me to call 611. It never has happened before

Somehow my phone turn on safe mode by itself and I put on the notifications and it said tap here to turn off that it would restart my phone and when I

I try to use the eject tool in the small hole, but nothing happens.  Does the phone have to be on, off or what?  I have tried both ways!

Trying to make sd card the primary storage

I keep getting these text messages that's say spam on them out don't even have to open  the message

Early on February 22nd, I was not able to connect to the mobile (cellular) data network – not able to send/ receive MMS text messages or connect to an