Apparently my sim card is active (paid fee on phone on and they said it was active), but when I open the phone up I get a 'Connection Problem or Invalid MMI Code', prompted to 'Sign in to network: AT&T' but when I try to sign in I then get invalid web page, and can't make or receive phone calls

Hi all, What happened to my device Lenovo Flex5G has no service with e-SIM? It can download e-SIM profile successfully, Can you check it for me? I checked the device FW is ATT. What's the problem on my device or is AT&T service problem?

I'm trying to unlock my prepaid device but the system says it can't be unlocked. It does not specify a reason why it can't be unlocked, just states that it can't be. Please help me?

Hi, When I call a doctors office or a credit union I get a busy signal or I see a call ended screen after dialing the number. I have tried to call at different locations and still have the same result. When I use a different phone I am able to place the call. I know I am dialing the correct numbe

I have a sansung a12 when I open the device unlock app, only the white screen remains and it does not show any options

So I've recently moved abroad and no longer need my AT&T Sim card. I've already stopped all payments, so is it automatically canceled? I can't call internationally, so I am having difficulty contacting AT&T for support.

I purchased a GSM unlocked phone from Apple. I Used in on Verizon prepaid for a while and switched to ATT Gophone prepaid for a few months. I relocated and ATT does not have cell service where my home is. I tried to switch back to Verizon but it is now locked to ATT. They wont unlock it until Ive be

I want to use my AT&T 5G prepaid Sims card in my new Samsung galaxy AO3s ?

I got a new iphone, my old iPhone, that I paid for in full, I gave to my daughter. After about three days, ATT, blocked the device from the network.  WHY?  The phone was not reported lost or stolen. 

Recently purchased your hotspot device but cannot replenish, sign in to account, or explain to MIL how to sign in to account. (MIL is in relatively remote area/Okanogan County, WA, not serviced by any internet or phone carrier, so we thought we'd try this and it works well enough to stick with it. F

Using a Hot Spot. It seems to be running data when I'm not on or consuming a lot of data. I have downloaded my usage history and can't possible see how I would use 15 gb a day. Not a gamer or streamer. It's running in the morning before I ever get up and in the night. I turn it off when I'm not usi

I would like to activate SIM CARD by star one two three method