Transform your Android device into a powerful NMEA GPS receiver — a lightweight tool designed for developers and testers who need to work with simulated GPS data. NMEA Receiver allows you to receive NMEA location data over Bluetooth from another device or compatible application and use the received coordinates as your device’s mock location.
Simply connect your phone to a Bluetooth device, open NMEA Receiver, and start the connection. Once connected, use an NMEA-compatible application such as Mocksy to change and send simulated GPS locations. NMEA Receiver receives the NMEA data in real time and updates the device’s mock location, allowing other location-based applications to work with the simulated position.
More info and tutorial how it's work you can find here -> https://mocksy.pages.dev/posts/mocksy-nmea-tutorial-tutorial/nmea-location/
Easy mock your mobile device location with NMEA data string over the Bluetooth