When you need Wi-Fi working stat, there are thousands of widgets available to place an on/off switch on your phone's screen. But if you're searching for one anyway, you might as well get one loaded with details, like the Wi-Fi Manager. It supplies different-sized widgets for your phone's screen. The largest widget shows which Wi-Fi network the phone is using and the speed and the quality of the connection. You choose whether you want quality shown as an image,% or dBm's (decibels). And then, of course, just tap it once to turn Wi-Fi on or off. Wi-Fi Manager (free).