1900 PCS+G / band 25 USA
WCDMA (3G / 4G)
1900 PCS / band 2 (II) Americas
2100 IMT / band 1 (I) Europe, Asia, Africa, Oceania, Brazil, India, Israel
CDMA (2G / 3G)
800 ESMR / BC10 Americas
850 Cellular / BC0 Americas, Oceania, Brazil, Israel
1900 PCS / BC1 Americas
850 Cellular Americas, Oceania, Brazil, Israel
900 Europe, Asia, Africa
1800 DCS Europe, Asia, Africa
1900 PCS Americas
Verizon version supports LTE 750 instead of 1900
As noted above, the Verizon version of the phone does not support 1900 MHz or 1700/21000 MHz, which are the LTE frequencies that T-Mobile uses. You can get 3G on 1900 MHz if you are in a refarmed area (customer service can clarify if such us the case), but since you're only getting EDGE connectivity, it would seem that you are not in a refarmed area .
Thank for the answer. Makes sense.