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[Home](https://www.t-mobile.com/business) 2. [Solutions](https://www.t-mobile.com/business/solutions) 3. [IOT](https://www.t-mobile.com/business/solutions/iot) 4. Cat M IOT Coverage Map # Check CAT-M IoT Coverage Enter your address or zip code, or use the location icon, to see a detailed coverage map of your area. [](https://www.mapbox.com/) Map and service info ## Map Legend Coverage available No coverage ## Map Legend LTE-M Partner: Cat-M1 No coverage ## Map legend Coverage available Coverage here is a combination of our networks and any partner networks. Please enter an address or zoom into the map for more info on the specific type of coverage you can expect. No coverage We’re constantly working to improve our network, but some areas may have no coverage due to inaccessible landscape, physical barriers, or places where our towers can’t.    __Roaming and partner information__ Coverage shown may include roaming coverage by partner networks. When you travel outside of our network areas, your device automatically switches to use one of our wireless network partners when coverage is available, you have data roaming enabled, you have roaming data remaining, and there are qualifying services available with your plan. Data allotments while roaming may be limited or unavailable on some plans; see your selected service for details. Speeds and connections may vary. ## Map legend LTE-M CAT-M1 or LTE-M is a low power wide area technology which supports IoT through lower device complexity and provides extended coverage, while allowing the reuse of the LTE installed base network. CAT-M1 networks co-exist with 2G, 3G, and 4G LTE mobile network domains where available and benefit from all the security and privacy features associated with mobile networks. Partner: Cat-M1 When you travel outside of our network areas, your device automatically switches to use one of our wireless network partners when coverage is available, the device allows data roaming and there are qualifying services available with your plan. Data allotments while roaming may be limited or unavailable on some plans; see your selected service for details. Speeds and connections may vary. No coverage We’re constantly working to improve our network, but some areas may have no coverage due to inaccessible landscape, physical barriers, or places where our towers can’t.  ##### Map and service info Enter a location or click on the map to check coverage information.   A capable device and qualifying service are required for a network connection. __5G__: Not all 5G devices & signals are compatible; check your device specs. 5G devices may use 4G LTE, 5G low-band, and 5G mid-band/high-band signals and dynamically route traffic between the signals to support your connectivity, which could result in instances where your device indicates a connection to one signal type even though you are temporarily utilizing other signals. __Map Information__: Map approximates anticipated coverage outdoors (including 600 Mhz) based on a variety of factors, which may include limited or no coverage areas, and does not guarantee service availability; some data-intensive uses may have decreased functionality in low-bandwidth areas, especially indoors or on the exterior edges of the approximated coverage area. Within coverage areas, network changes, traffic volume, outages, technical limitations, signal strength, your equipment, obstructions, weather, and other conditions may interfere with service quality and availability. Some coverage (e.g., millimeter wave 5G) not depicted. __Roaming/Partner__: Some services within coverage areas may be provided by roaming partners. Any service while roaming may be limited or unavailable and certain devices and features may not be compatible with these networks. We are not responsible for the performance of our service partner's networks. ## IoT Coverage. Learn more about additional IoT coverage by clicking on the Narrowband coverage map. [View Narrowband map](https://www.t-mobile.com/business/solutions/iot/nb-iot-coverage-map) ### Helping developers of all sizes succeed through the capabilities of NB-IoT. Learn about the network, tools, platforms, and more we offer to support your IoT ambitions. [Learn more](https://www.t-mobile.com/business/solutions/iot)  ## Helping developers of all sizes succeed through the capabilities of NB-IoT. ### Certify your IoT device today. Let us help find the right certified module, chipset, or device for your IoT needs. [Get certified](https://www.t-mobile.com/business/solutions/iot/device-certification)  ## Certify your IoT device today. - ### What is Narrowband (NB) IoT? NB-IoT is basic, low-power, wide area (LPWA) technology focused on very small, infrequent data exchanges, has very long battery life and low cost. NB-IoT is ideal for fixed use cases like Smart Meters, Industrial Sensors, and Environmental sensors. - ### What is Cat-M / Cat-1? Cat-M / Cat-1, sometimes known as LTE-M (LTE for Machines) is enhanced low power, wide-area (LPWA) technology supporting higher bandwidth, devices in motion, over-the-air updates, and voice functionality. Cat-M/Cat-1/LTE-Mis ideal for uses cases like wearables, facilities & consumable monitoring, and fleet & asset tracking. - ### What factors affect coverage? Outside factors such as terrain, building structures, weather, and other conditions may interfere with actual service performance and availability. ### Let’s talk. 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