I am tired AT&T removing features from updates and changing specs and features on new phones. For this customer experience I have been supporting AT&T with a two year contract.
I am moving to Straight Talk when the contract runs out, buy the phones we want, fully featured and still save money. Two smartphones on the share plan, 1GB data, taxes and all is usually $148 a month, two years is $3552. Straight talk is $125 for three months per phone, 2.5GB/month. Two years ST is $2000.
I put this together for the 1520: T-Mobile LTE is on band 4
RM-937 Global variant, LTE 1 3 7 8 20
RM-938 US variant - Went through FCC, LTE 2 4 5 17
RM-939 China variant
RM-940 AT&T, Went through FCC, DTM removed, no Qi charging, LTE band 4 disabled, 16GB, LTE 2 5 17
All have 32 GB memory and Qi charging except RM-940
The RM -938 is listed as a US variant at
Device Details -- Nokia Lumia 1520
Even though we have seen pictures of a Verizon 1520 there have not been any tested at FCC with Verizon frequencies.