How to listen WhatsApp Voice Notes discreetly via your phone's earpiece
If you frequently use WhatsApp voice notes but don't like letting everyone around you in on the audio you're listening to, read out how to listen to voice notes discreetly.

Step 1: Open WhatsApp
Open up WhatsApp on your phone and open the chatbox where the voice note that you want to listen.
Step 2: Tap play and place the phone on your ear
Hit play on the voice note and immediately place your phone on your ear as if you were on a call. Assuming the proximity sensor on your smartphone is working fine, WhatsApp will detect that you have held the phone up against your ear and instead of playing the audio on the phone’s speaker, it will play only on the earpiece, allowing only you to listen to the audio.
Note that even if you bring down the phone back in your hands the audio which still may be playing will not automatically switch back to the speaker. Instead, it will pause at the exact moment when you took the phone away from your ear. This ensures that people around you don’t listen to your WhatsApp voice note even if you pull your phone down in the middle of playing it back.