T-Mobile USA: Understanding network compatibility of an unlocked iPhone 5

Any GSM iPhone 5 model A1428 will support T-Mobile's LTE network and HSPA+ speeds of up to 21 Mbps. To experience DC-HSDPA up to 42 Mbps on T-Mobile, you need an iPhone 5 GSM model that supports T-Mobile's AWS band (1700/2100).


by via Apple - Support - Most Recent - iPhone