iDroid Tango 4G NEW GSM UNLOCKED DUAL SIM Navy Blue-Black, Gold(battery cover)

NOT COMPATIBLE with T-Mobile or any T-Mobile MVNO 3G, 4G HSPA+ or 4G LTE system.T-Mobile networks nationwide coverage is mainly on 1700 MHz/2100 MHz AWS, iDroid does NOT offer this as part of their product line.I called and spoke to a guy who didn't give his name but said that he was a Sales and Product Specialist. (Called a number in the 713 area code to speak to this non-specialist order-taker.) When asked directly, he said none of their line is compatible with Band 4's frequencies. This was moments after he told me it was compatible with T-Mobile.They are compatible with VOICE and 2G ONLY on T-Mobile's networks.Sorry to say, their claims of T-Mobile compatibility are, in reality, quite limited.