You can listen to music, make phone calls, use Siri, and more with your AirPods
If you're setting up your AirPods for the first time,
* follow these steps
1. Go to the Home screen.
2. Open the case—with your AirPods inside—and
hold it next to your iPhone.
3. A setup animation appears on your iPhone.
4. Tap Connect, then tap Done.
If you're signed in to iCloud, your AirPods are set
up automatically with any of your supported
devices that are signed in to iCloud with the same
Notice that small, flush button on the back of the charging case? That's what you'll use to pair AirPods to an Android device or anything else that doesn't work with Apple's W1 chip.
I've never run out of AirPod battery life in a single day, but if you're a power-user making lots of phone calls, you might find them running low. One AirPod can work on its own as a Bluetooth headset. Keep the other in the case to charge, and then swap as needed. The other bud takes over seamlessly.
If you want to listen to a livestream while doing other things casually, pop a single bud in while the other is in the case. It'll pump a stereo signal into one bud. Otherwise, with both AirPods out, it'll only get one ear's worth of stereo.
You can either open the charging case next to your iPhone, which should prompt your phone to display a popup with battery status. Or, you can add the battery widget to Notification Center's Today panel using the instructions in this post. Keep in mind, the Battery widget will only include AirPods if you are actively using them.