WiFi Speed Test - SpeedCheck 5G 4G 3G - Cleaner is a handy utility that is designed to help users gain insight into their mobile device's internet speed. The application is quite simple and easy to use. Once you open the app, you will be presented with a menu that lets you choose from different options. The first option is the speed test. This will allow you to run a speed test on your device and get the results in terms of megabits per second (Mbps). The next option is the signal strength. This will allow you to check the strength of the signal that is being received on your device. The last option is the cleaning. This will allow you to clean the cache, the junk, and the cookies.