Step 1: With AirPods in case, open lid next to iPhone and tap Connect.
Step 2: Tap Connect again in the popup. AirPods will pair to the iPhone.
Step 3: AirPods will now automatically switch between your iCloud devices.
Step 4: Tap either AirPod to invoke Siri. Tap twice to control audio playback.
Step 5: AirPods go into the case to charge. The case charges wirelessly or by Lightning.