Idea of SMS Icon
This is a speech bubble. The speech bubble is in the shape of a rectangle with rounded edges and a little comma on the bottom left that would point towards the speaker. Inside of the speech bubble are 3 circles in a horizontal line.
This SMS icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,100 icons, all in the same style and quality.