Hi.... Looking for some help. I have just bought a Micro System a CMT-S20B, I bought it as I thought it was a smart wee system with DAB radio built in and a USB slot for connecting my iPhone.... And this is where the problem lies. It will not recognise anything via the USB slot, it just keeps saying 'no USB'. I double checked online and the system is def advertised as being compatible for charging and playing via the USB. So I exchanged it for a replacement just incase it was faulty, but same result. Can anyone advise if they know the unit and if it should work my smartphone via the USB.

Thanks in advance.