I like to play along to backing tracks, drum loops and songs on the Moises app (where I loop slowed down sections practicing solos) and would never drag my laptop out each time I want to practice, so the ability to practice with my phone is HUGE. After fighting a while, trying to use the USB, etc, I found the best possible solution. I'm connecting to the (analog) input 2 using a 3/5mm TSR to dual 1/4 inch TS cable and connecting it to a small bluetooth receiver (mine is the ES100) but FIIO and many brands have them. You do have to modify your presets to incorporate a second input (and looper if you want to loop) but it has been AWESOME. I now have quick bluetooth connectivity to my phone that sounds great with really great audio quality and none of the wi-fi interference I have with my Waza Airs! Initially the volume was a pinch low but I just adjusted it in the settings for input 2 which was super easy. Just thought I'd share. Happy playing!