Bluetooth is complete garbage now. Everytime my phone pairs with devices, the audio plays through the phone. The trick I found to make it work is leave the bluetooth device on, turn off bluetooth on the phone, and then back on. Then immediately tap the device i want to pair with and then it plays audio through the device.
Major pain in the *** but it works until apple fixes this issue. Also problem has been persistent on IOS 10, 10.0.1, 10.0.2.
Tried resetting network settings, no luck, all that did was remove all my saved wifi hotspots, and since they're synced with iCloud, you better god **** believe that all my MacBooks, iPads and Macs had removed their saved wifi connections as well. So what a delight it was to re-add all those connections.