Sony XAV-AX3250 Operating Instructions Manual page 113

Help Guide
In-Car Receiver
XAV-AX3200/XAV-AX3250
The smartphone connected to the USB port cannot be played.
The USB connection is only available for Android phones and USB devices in MSC mode.
When using a smartphone other than an Android phone, make a BLUETOOTH connection.
Related Topic
Preparing a Bluetooth® Device
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