1. Using the device’s screen, make sure that the device plays a music track/outputs sound and it is not paused.
2. Make sure the earphones are charged. Charge them if needed.
3. Turn the playback volume up on the device.
4. Make sure that the earphones are connected to your device.
5. Move the device away from the potential sources of interference and close to the earphones.
6. Try to play another audio file.
7. Pair to another device.