Currently, all 50 states as well as Puerto Rico, Mexico, and Canada are included on the T-Mobile data coverage map. However, the amount of coverage and types of data available vary based on location.
Although all 50 states are eligible for T-Mobile data plans, they are not covered equally. While most states have complete data coverage, some do not. Alaska and Hawaii have the least amount, with Alaska having almost no coverage at all. In addition, not all states have access to the same types of data. For example, 4G LTE data is not widely available in Montana, Nebraska, Wyoming, North Dakota or South Dakota.