Question: how to connect only one airpod to iphone?
Answer: Launch the Settings app on your iPhone or iPad.
Tap Bluetooth, and then tap the 'i' icon next to your AirPods in the list.
Tap Forget this Device.
Ensure that both AirPods are in their charging case and that the case has charge.
Locate the small button on the back of the case, near the bottom.