Almost all new Android smartphones are actually capable of supporting, in addition to the classic GPS, Glonass’s global positioning system as well.
This feature is hardware-supported and transparently managed by the Android operating system. It is not necessary to enable specific options. If the smartphone receives signals in addition to the GPS, from satellites, it uses them to make the position “fix” faster and locate more precisely.
Normally, applications do not require specific features to exploit this feature. They merely need geographic coordinates, expressed in longitude and latitude, without looking at the source of this information.
However, if you want to check the Glonass signal reception, you can install an app that explicitly provides this feature. The most popular app for analyzing location-based information is GPS Test of Chartcross Limited, downloadable free of charge from Google Play.
With this tool, you can select which constellation of satellites to consider, in order to understand which data is used to generate your position. Once the app is started, press the icon with the three dots on the top right, and from the context menu, press the Satellite Filter item. In the window that will appear, you can enable or disable the display of various satellites, Navstar GPS, Glonass, Chinese Beidou and also the latest Galileo European positioning system.
With these tools, the smartphone’s GPS features will no longer have any secrets and it will always be possible to verify the correct reception of geo-localization signals.