OpenSignal – 3G/4G/WiFi is a very simple tool that behind all its configuration screens hides one simple objective: improve the signal of your Android terminal. How does it obtain that? Very easy.
OpenSignal – 3G/4G/WiFi will shows you a graph of close signals. You will be able to see all the mobile phone antennas and WiFi routers on a map. In addition, you will have various maps of the coverage of the networks you have around you for 2G, 3G and 4G (LTE).
Aside from that, OpenSignal – 3G/4G/WiFi will lets you make a speed test for your Android terminal. This way you will be able to quickly check the download and upload speed you have with your data network.