Has to to with the cellular radios employed by the device, which matches the RM designation...RM-937, RM-938, RM-940. AKA another way to class carrier variants depending on the global region where the phone is shipped and sold.
The 1520.3 is the unicorn device, which mean it has North American LTE radios, including the AWS band for T-Mobile. If my memory is correct, that would make it the RM 938. The RM-940 is the AT&T exclusive and the RM-937 is the global offering.
The higher the number the better, 1520.3 = the best.
So is this correct...
RM-937 = 1520.1
RM-938 = 1520.2
RM-939 = 1520.3
?
Sort of. Should be:
RM-937 = 1520.1 Global 32GB
RM-940 = 1520.2 ATT 16GB
RM-938 = 1520.3 Global with USA LTE and AWS 32GB
And the RM-939 (No LTE for those parts of APAC that have TD-LTE and can't use the FD-LTE radio in other 1520 models) should = 1520.4
The RM would indicate planning/design order and the 1520.x progression actual release. That's my guess.
Wow had no idea there was a 4th. Lol
Hi there isn't a 4th.