After installing my GROM for my 2004 Volvo, I enjoyed three incredible weeks of the best music I have heard in a vehicle! Alas, then came my iPhone Upgrade from Hell and no longer would my phone accept non Apple cables. The irony was the cable I used was heavy duty and twice as good as my thin apple lightning cable. After much grumbling I stumbled on what i think is a solution. I turned my iPhone completely off (which I should be doing regularly in the first place) and it seemed to "reset" the cable acceptance. That was almost two weeks ago and it now works...so far...every time.