If you have never heard of a popsocket, they are for the back of your phone, tablet, smart device. They can prop your phone up while you are cooking so you can see the recipe you are using, or the show you are trying to finish while you are in the kitchen. They also help to hold your phone in your hand while surfing through the web, or tik tok.
Sometimes with bigger phones it can be harder to grip in your hand. Popsockets help with that.