What does national roaming mean?

One SIM, all networks.
With national roaming.

The wider public is familiar with roaming when you go on vacation. Roaming means using the SIM in a network other than that of the domestic network operator, i.e. not with the network provider with which a private individual has concluded their mobile phone contract. In the past, using a smartphone abroad was an expensive pleasure, but today there are agreements within the EU that allow private individuals to use the networks in other European countries in the same way as in their domestic mobile network. Due to the potential costs of using foreign networks, roaming must be actively switched on in most devices.

National roaming primarily refers to special M2M SIM cards, such as those used for IoT and M2M projects. Unlike the SIM in a private smartphone, an end device with an M2M SIM can use the networks of different network operators. This is possible at wherever SIM , as our SIM cards have no home network at all. Regardless of the country in which the M2M SIMs are used, they are always roaming. For this special use, we have concluded contracts with network operators worldwide that allow our SIM cards to use their networks at low cost.

With an M2M SIM from wherever SIM , you are not limited to just one network for your project, but can access the available local networks on an equal footing. However, as with smartphones, roaming must also be permitted on the end device for IoT and M2M projects, both domestically and abroad.