Ever wondered what all those status icons and symbols mean that sit in the iPhone status bar, along the top of the screen? You’re certainly not alone, and while some of those little symbols make perfect sense, others can be a bit of a mystery even to longtime iPhone users. Sure, the obvious ones like cell bars signal (or the true numerical signal if you enabled it) and the 4G, LTE, battery, and Wi-Fi indicators are pretty self explanatory, but what about that little circle you see sometimes? Or what about the moon icon, or the two interlinking circles? Or the little arrow that points up and to the right? Don’t let those status bar icons be a mystery any longer.