A:Answer Hi, Henny!
When using Apple devices with this system, connect them via a Bluetooth connection. Using Apple devices via a USB connection is not supported. See page 15 for details.
https://www.sony.com/electronics/support/res/manuals/4582/48db81156001bc4692df7b4b9135b0f0/45824921M.pdf
Happy to help,
David