DG40S / DG40SA - Troubleshooting - Why does DG40S not Transfer files, pictures with Iphone, Ipad, Ipod ?
Bluetooth transfer from iPhone to PC or iPhone to iPhone is not a feature of iOS and therefore not supported. You have to connect your iPhone, iPad, or iPod touch to your computer using the USB cable that came with your device. Please refer to https://support.apple.com/en-gb/HT201301 and https://support.apple.com/en-us/HT201302.
However, if you use Bluesoleil, once connected, you can listem to the music from Iphone, Ipad, Ipod via the PC, while if you plug & play, it does not support.