Cat-M1 and NB-IoT are next-generation IoT-specific networks. Hologram will continue to develop this service as the network matures. Check out our Hologram coverage page for the most up to date availability of Cat-M1 and NB-IoT in your region.
Note: Cat-M1 is also known as LTE-M.
At present, Hologram is fully deployed on the following networks
| Cat-M1 USA | Multiple carriers. |
| Cat-M1 International | Globally, the Cat-M1 roaming scenario isn't fully standardized yet. Usually, if available, Cat-M1 runs on the same infrastructure as standard LTE. |
| NB-IoT International | Globally, the NB-IoT roaming scenario isn't fully standardized yet. |
Note: If a tower experiences congestion, it has the capability to disconnect LTE-M/Cat-M1 modules in order to ensure stability. This action is crucial for maintaining the overall performance and reliability of the network. When the tower decides to disconnect a device, it is important to understand that it is the tower itself that is terminating the socket connection, rather than the device or the server involved in the communication. This distinction is significant because it emphasizes that the tower is taking proactive measures to manage its resources effectively.
Furthermore, there is no specific or guaranteed duration that the tower will wait before it clears up a resource to permit that device to reconnect. This lack of a defined timeframe means that the reconnection process can vary significantly based on the current state of the tower and the level of congestion it is experiencing. As such, it is essential for users and administrators to be aware that reconnection attempts may not always be successful immediately and that they might need to wait for an indeterminate period before they can regain access to the network resources.