[Windows Central Question]

I have a T-Mobile plan but the 4G doesn't seem to work

[Harrie-S]

Did you contact already T-Mobile to check which bands they use?

Your phone supports below bands.
Network
2G: GSM 850 / 900 / 1800 / 1900 MHz
3G: UMTS 850 / 900 / 1900 / 2100 MHz
4G: LTE 800 / 1800 / 2600 MHz

[pankaj981]

Did you contact already T-Mobile to check which bands they use?

Your phone supports below bands.
Network
2G: GSM 850 / 900 / 1800 / 1900 MHz
3G: UMTS 850 / 900 / 1900 / 2100 MHz
4G: LTE 800 / 1800 / 2600 MHz

If those are correct bands then it won't work with T-Mobile US LTE frequencies.

[mark233]

735 RM-1039 is the model that works with U.S. T-Mobile 4GLTE.

[Harrie-S]

These are the bands from the rm-1039
GSM network: 850 MHz, 900 MHz, 1800 MHz, 1900 MHz
WCDMA network: Band 1 (2100 MHz), Band 2 (1900 MHz), Band 5 (850 MHz)
LTE FDD network: Band 13 (700MHz), Band 2 (1900 MHz), Band 4 (1700/2100 MHz)
CDMA network bands: BC1 (1900 MHz), BC0 (800 MHz)