Idea of Hashtag Activity Grid Icon
There is a square that has been divided into 4 columns and 4 rows. in the lower right hand corner the square is wited out so se can not see it and the pound sign is in the whited out area
This is a Hashtag Activity Grid 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 13,900 icons, all in the same style and quality.