For now, only developers can explore the function
Google has released the second version of Android 15 for developers — Android 15 Developer Preview 2 — and it supports satellite communications.
«Applications can use the ServiceState.isUsingNonTerrestrialNetwork() function to determine satellite connectivity, which provides more information about why all network services may be unavailable. In addition, Android 15 brings support for SMS/MMS as well as pre-installed RCS applications when using satellite communications to send and receive messages», — This is how Google described the features of satellite communications.
Android 15 Developer Preview 2 brings many improvements over the first Developer Preview. Thus, the autonomy of mobile devices has been improved, the smoothness of the interface has been increased, and there are improvements in security.