Hello, I have a factory unlocked international version of a Samsung Galaxy S6 (from UK), and it doesn't look like it's connecting to LTE on AT&T (in the U.S with an AT&T sim). Beside the reception bars at the top of the phone it has an H+, but it doesn't show LTE. I did a speed test and I get about 2-4 mbps down and about 1 mbps up. I looked into everything before I bought the phone and it was supposed to work on AT&Ts LTE bands. I also checked to make sure my phone was set to connect automatically to LTE.
Does anyone know what can be wrong?
EDIT/UPDATE:
Ok, so I did some more research and I found a thread on another forum talking about this issue. LTE definitely works on both AT&T and T-Mobile on the unlocked Galaxy S6 international version, for some people it works right away when they pop their sim into their phone, for others it doesn't. If it doesn't work for you, the only thing you need to do is to call AT&T customer service and make sure they have the correct IMEI on file (This is written on the back of your phone, it's very tiny, but it's there). Once they have your correct IMEI, restart your phone and LTE will work. I just did it and it now says 4G at the top of my phone, and my speed is up to ~30 mbps.
Hopefully this can help someone else having the same issue!
Does anyone know what can be wrong?
EDIT/UPDATE:
Ok, so I did some more research and I found a thread on another forum talking about this issue. LTE definitely works on both AT&T and T-Mobile on the unlocked Galaxy S6 international version, for some people it works right away when they pop their sim into their phone, for others it doesn't. If it doesn't work for you, the only thing you need to do is to call AT&T customer service and make sure they have the correct IMEI on file (This is written on the back of your phone, it's very tiny, but it's there). Once they have your correct IMEI, restart your phone and LTE will work. I just did it and it now says 4G at the top of my phone, and my speed is up to ~30 mbps.
Hopefully this can help someone else having the same issue!
Last edited: