Hard reset

The next thing to try is a hard reset. Make all the "reboot Windows" jokes you want but sometimes bad bits get stuck and need to be flushed out.

  1. Swipe up from the bottom edge of the screen to bring up Control Center.
  2. Tap the Bluetooth button to turn BT off.
  3. On the iPhone 7 and newer, press and hold both the Sleep/Wake button and the Volume Down button at the same time. On the iPhone 6s and older, press and hold down both the Sleep/Wake button and the Home button at the same time.
  4. Keep them held down until you see an Apple logo.
  5. Let go.

  6. Wait for your iPhone or iPad to reboot.
  7. Swipe up from the bottom edge of the screen to bring up Control Center again.
  8. Tap the Bluetooth button to turn BT back on.

Once your iPhone or iPad has rebooted, try connecting it in again. If it works, you're good. If not, go on to the next step.