Understand what LTE and 5G bands T-Mobile uses, what MVNOs use the T-Mobile network for coverage, and the best plans currently available on the T-Mobile network.
T-Mobile LTE bands: 2, 4, 12, 25, 26, 41, 66, 71
T-Mobile 5G bands: n41, n71, n260, n261
The bands in bold are T-Mobile's primary bands that they use for LTE and 5G coverage. Make sure your phone supports these LTE and 5G bands for the best coverage, performance, and data speeds on the T-Mobile network.