Step 1. Open the Settings app on your iPhone app.
Step 2. Tap on ‘Bluetooth’.
Step 3. Then scroll down and search your AirPods.
Step 4. Click the ‘i’ icon which is shown next to your AirPods name,
Step 5. Then a settings page open on your phone in it you can change your AirPods name by clicking on AirPods name.
To change name on ANDROID & MACBOOK. Click Below