The cellular supported frequencies listed by the device manufacturer are as follows:
WCDMA ： B1(2100)/B8(900)
LTE FDD ：B1(2100)/B3(1800)
LTE TDD： B38(2600)/B40(2300)/B41(2600)
I don’t know the difference between LTE FDD vs TDD and when looking online, I see conflicting info saying for example that 2100 is Band 4 and Band 1 depending on the resource. Or that 2600 is Band 7 and Band 38. It’s so confusing.
Can you guys help an old guy who is not an RF engineer out? What carrier should I go with for the fastest supported LTE coverage?
FYI: I tried the AT&T SIM from my cell phone and after more than 30 mins and 3 reboots no network was found, so that seems to rule out AT&T.