Yotour And Iphone 5S

[collin]

Hello

I bought the YATOUR ytm06 toy2 with the following cable.
cntopperstar.en.made-in-china.…or-Apple-iPhone-5s-5.html

I use this cabel because I would like to play music and charching the Battery .
I use this cable to connect the iPhone to both music playing music and recharge.

The connection of the YATOUR on the radio is no problem.

Issues:
When I play spotify on my iPhone 5s and connect with the cable usb and jackplug, I hear no sound.
When I play on spotify iPhone 5s and I only use the jack I hear music through the Speakers of the car.
I can also control the volume using steering wheel.
The search for a particular song fails.

This I can do only through the iPhone.

How can I solve this problem.