What is the “ear speaker” on the Poco X3 Pro

The ear speaker is the small loudspeaker component located near the front top of the phone (by the earpiece grill) that you hear your call-partner’s voice through when you hold the phone to your ear. When this part fails, you may experience little or no sound during regular calls (though loudspeakers or Bluetooth may still work). For example, one spare-parts listing says: “Ear speaker replacement for Xiaomi Poco X3 Pro … used to replace your damaged or not working earpiece, solving your problem of unable to hear any sounds while having a phone call.