These often include bug fixes, even for issues that are not listed in the brief release notes, and thus should always be installed.
Go to Settings Reset Network Settings This will clear out all Bluetooth pairing of all devices, including every setting and configuration that has been made on the i OS device.
This seems to happen regardless of the manufacturer, whether it’s something like a custom Alpine or Pioneer deck or even the built-in Bluetooth receivers that many newer model cars come with, and it can impact both voice and call connectivity, as well as music playing and audio output, steering wheel controls, and turn-by-turn directions from the various mapping services.
Troubleshooting every individual device is a huge feat, so instead we’ll focus on some general tips that are likely to fix bluetooth connection problems with i OS 7 devices, whether that’s a car stereo, headset, or speaker system. This may sound silly, but it matters, particularly with battery operated wireless devices.