🛜

Description
A circle with protruding vertically-oriented curves surrounding the top half of it, each increasing in size (but see usage notes). These lines represent bars.

Symbol

 * 1) Wi-Fi.

Usage notes

 * The depiction of this icon varies, especially the roundedness, spacing and number of lines. Some operating systems (such as many Apple devices) display the symbol as only two lines surrounding an inverted curved triangle.
 * As an emoji, this symbol is usually enclosed in a blue or grey square.