Fix AirPods disconnecting from iPhone

Turning AirPods off and on again can solve the problem.

1. Put the AirPods inside their case, shut the lid and wait about 15 seconds.
2. Now open the lid and press and hold the setup button on the back of the case.
3. Wait for the light to flash amber and then white.
4. Your AirPods will now have reset (this works even if they aren't your AirPods).
5. To reconnect your AirPods just hold them beside your iPhone (make sure you have Bluetooth turned on).