I have been having issues with iOS10.2 since the upgrade on the Bluetooth side. The connection would drop after five-ten minutes and even though show connected to the unit, no audio. The radio worked fine. Thinking it was the headend unit of the radio/Bluetooth, I called Toyota "They Don't Care". So I researched on the internets and found this in one of the tubes: Tips To Fix iOS 10 Bluetooth Problems And Issues On iPhone | Redmond Pie Essentially, "forget" the connection and reapply. I did that last night and so far, so good. I drove 45 minutes to work and didn't drop the connection.