Upon taking the SIM card out of my GoPhone, I tried to place it in another one of my AT&T phones. Sadly, this did not work, and it gave me an invalid SIM error message. I've been told that sometimes, the SIM becomes locked to the first IMEI it encounters, but that shouldn't be the case anymore. I'm

The LG G3 Invalid Sim card message happen to me and I got a replacement LG G3 phone and I am sorry to say after about a year it is happening with the replacement phone too! I bought a new battery thinking maybe it was a heat issue with the battery as the phone did seem hotter than normal on the back

I just had a defective Two-Wire changed out for a NVG599 about two weeks ago. Yesterday I was unable to view my IP security cameras from the internet so I logged into the NVG and it has a notice that says "The system database is invalid. You may need to reset the device." I restarted the device but

I called ATT about a month ago to install an Ethernet port in my newly purchased home. They said that a tech would come out... and he did...but he didn’t possess the skill set to do the requested wiring so he left. Now I’m sitting with a $159 charge on my account and ATT repeatedly transferring betw

Paying for Secure Family ... upgraded my daughter's phone to iPhone XR ... tried to install Secure Family ... failure ... "The SCEP server returned an invalid response" Ok ... useful ... now what?

Hola. Tengo un iPhone 6s de 64 gb, lo compre en estados unidos. Lo use un año y medio y por problemas técnicos de fábrica el aparato fue cambiado. Soy de argentina, en mi país no me cambiaban el aparato, aproveché un viaje a Brazil y cambie mi aparato. Lo seguí usando con mi sim anterior, Movistar.

I have been trying to unlock my iPhone 6+. It has been replaced by Apple, But I am still getting the error: The IMEI you entered does not appear to be an AT&T wireless phone or tablet. Please re-enter the correct 15-digit IMEI number for your AT&T wireless phone or tablet. You can obtain the IMEI nu

Hello, so recently i met a really cool girl and we really hit it off and wanted to keep contact after our chance encounter, she gave me her number and as soon as i texted it it sent a message from a 1121611611 number saying error invalid number please resend using a valid 10 digit mobile number or v

My step-mother has had an "sbcglobal.net" email account for over a decade. This is the first time we've ever had a problem. Suddenly, she can't access her email account, each time being told "incorrect password". I'm a PC Tech and tried multiple ways to login but nothing works. I checked from my own