Flex Mobile is a mobile virtual network operator, which means it buys capacity in bulk on a major nationwide network rather than building its own towers. You get the same coverage that network provides.
Across the United States
Your plan works coast to coast on 5G and 4G LTE, covering nearly every part of the country. Road trips, work travel and moving to a new state need no change to your plan.
Checking your own address
Nationwide doesn't mean identical everywhere. Enter your zip code on the Flex Mobile Coverage page to see voice, 4G LTE and 5G availability where you live and work. You're also asked for your zip code at checkout as a second check.
What affects your signal locally
Coverage estimates are based on the network partner's data. Real world service varies with your device, the terrain, and the building you're standing in. Thick walls, basements and elevators reduce signal on any carrier.
Outside the United States
Flex Unlimited and Flex Unlimited Plus include roaming in Canada and Mexico. Flex Standard doesn't include roaming, and no plan covers anywhere beyond those two countries.