anguilla1980
New member
@92GTA: Dial ##3282# to enter field test mode and check the LTE section. If it's connected on LTE then you'll see the details there.
Turns out that does not work on the 640 but it did on my 1520.
My 640 now however is now showing the 4G next so the signal strength. I'm gonna go with yes, the RM-1113 works great with AT&T lol.