I have the exact same audi symphony system small 6.5 inch screen and no buttons behind the gear stick. I fitted a wireless android auto and carplay system in myself for a couple hundred, its bloody brilliant, everything looks oem and the the steering controls work tooHi. I got 2012 S5 (no gps no MMI). Was looking to buy android radio from Alibaba, bit they don't do for RHD :/ and can only offer 10.5 screen which sticks out like a sore thumb. Where else shall I look and what's the solution? Thanks