You can use Apple AirPods with your Android phones. Check this video to know more on how to connect your Android phone with Apple AirPods.
Yes, many people does that to improve the battery life.While using only one AirPod at a time, your iPhone will switch over to a mono mixdown so, you can hear both sides of any stereo.
When you take any of the AirPods from the ear, it automatically pauses the music.
You can also double-tap on the stem to invoke Siri, and ask it to play/pause the music.
Yes, you can use Apple Airpods with any Android mobile phones, which has at least Bluetooth 4.0 connectivity option.
Look past their offbeat design and you'll find that Apple AirPods' compact size and high convenience factor are a winning combination.