This icon is depicting shaking your phone. There is a smartphone with two differently sized parallel lines on each side of it showing the shaking of the phone.
This is a Shake Phone 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 13,300 icons, all in the same style and quality.