OpenSignal

7.23.1-1

OpenSignal is a really cool app that lets users see where is the closest tower so that they can get better reception. Read more about OpenSignal  

The basic principle of the OpenSignal seems like an obvious one. If you have lousy reception, you open the application and check out in what direction you need to move in order to get better reception. It’s dead simple, and it’s also a cell tower location.
Of course, this is not the only feature of OpenSignal, which can do a lot of other stuff. For example, the application can also test the speed of your connection; it can show people the best or worst places for 2G, 3G and 4G, show what other users have found, and you can even get a live wallpaper that changes with the signal strength.
 
To top it all off, OpenSignal is a completely free application that doesn’t have any kind of ads.