Apple headphones may be broken due to the following reasons:
1. The battery is exhausted and needs to be charged;
2. The earphone cable is loose or damaged, and needs to be replaced or repaired.
3. The earphone plug is in poor contact, and the jack needs to be cleaned or the plug needs to be replaced.
4. If the Bluetooth connection is abnormal, re-pair or restart the device. You are advised to check the battery, cable connection, and port status of the headset, and try to reconnect the Bluetooth or replace the headset. If the problem persists, contact the Apple after-sales service for further troubleshooting.