9. How to use the BTR13 as a USB DAC for mobile phones in PHONE mode?

【Android phone】

Use the Type C-Type C data cable provided as an accessory to connect BTR13 and mobile phone, and play songs to enjoy high-quality music.

If there is no sound after the connection, the following points need to be noted:

1. Playback software settings, such as FiiO Music, if there is a USB output, it needs to be turned on. Some devices have sound only when the USB output is turned off.

2. The mobile phone needs to open "Developer Options" in "Other Advanced Settings", and then turn on "USB Debugging" or "OTG" function.

3. After the above settings are completed, you can try to unplug the data cable again, or play the track, switch the song, and rule out whether it is the hardware or software that cannot be recognized. If it still cannot be solved, it is recommended to contact our customer service to confirm whether it needs to be returned to the factory

【iPhone】

Use the TypeC-lightning data cable purchased separately to connect BTR13 and Apple phone, and play songs to enjoy high-quality music.

Note: Apple phones do not require too many settings. Generally speaking, just connect the adapter cable and play the song. If there is no sound, it may be that the adapter cable or the interface is in poor contact.