Lifehack: you can play a voice memo without everyone hearing it

Maybe you're thinking: Look, good for you that you also crawled out from under that cave, but I stumbled upon something this week. Something that I think maybe not everyone knows. I was on the train, received a voice memo and actually wanted to listen to it right away. But imagine if something is being said that not everyone needs to know. Uh, error. Then just drastically turn the sound button down to the left and listen to the message with one eye closed in utmost concentration, right? Well, no. The solution is so incredibly simple that I almost feel ashamed I didn't know this: play the message and hold your phone to your ear as if you're receiving a call. WhatsApp then directly switches to the earpiece, making your voice memo sound exactly like a regular phone call. HOW. HANDY. IS. THIS.