Make sure your iPhone has Bluetooth turned on
Put the AirPods in their charging case
Open the AirPods case lid near your iPhone
Wait for the setup animation to appear on your iPhone
Tap Connect
Follow any on-screen instructions
Tap Done when pairing is complete
If the animation does not appear, press and hold the setup button on the back of the case until the light flashes white
Open the case near your iPhone again and tap Connect