There is an outline of a man in the center of the image. To the right and slightly above the man's head there is a question mark symbol hanging in the air.
This is a Inquiry 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.