All you need for AirPods is an iCloud account and a macOSSierra, iOS10, or watchOS3 operating system. In other words, devices that meet the above conditions can successfully connect to Apple wireless headphones, of course, including the iPhone6 and iPhone6S. As a Bluetooth headset, it also supports Android devices, but many smart functions cannot be achieved.
After the first connection, the next time you listen to music, select AirPods mode, and you can directly pick up the headphones to listen to the music.
What if my headphones don't connect to my iPhone
Apple phones that have logged in to iCloud only need to open the charging case cover, and the connection animation will appear when they get close to the iPhone. But even if it can't connect automatically, Apple has a solution - reset the AirPods.
First of all, you should confirm that the AirPods are not out of power (funny face), and close the lid after confirmation;
After 15s, open the lid and confirm that the status light is blinking. If not, press and hold the set button on the back until the indicator flashes white.
If the problem is not resolved, press and hold the set button for more than 15 seconds until the indicator light appears a different amber color, after which it will flash white.