Satellite phones provide communication even in places where there is no coverage of mobile operators. As a rule, satellite telephony devices are rather cumbersome and expensive, but the American company Ubiquitilink is confident that in the near future ordinary smartphones will be suitable for cellular communication.
Almost all modern mobile devices already have the ability to connect to satellites of cellular communication, but the device software blocks this possibility, forcing them to search for ground stations.
According to the company, to create a public cellular connection, it is only necessary to launch a network of thousands of satellites into low near-earth orbit and slightly change the parameters of the radio frequency beam.
By the way, the company has already made a successful 2G-connection between a mobile phone with modified software and a nanosatellite.