This is a One To One 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 12,600 icons, all in the same style and quality.
The image is a square. The top and bottom are a little bit longer than the sides of the square. The square has the number 1, a colon, and another 1 in the center. The numbers are not touching the edge of the circle.
Related to One To One Icon
Related icons are the icons with matching tags, as well as all data icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors