The icon is a face with a large smile. The face almost looks like it is laughing with the points of the lips raised high and the curves designating the eyes displayed as joyful curves.
This is a LOL icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,700 icons, all in the same style and quality.