Download 3G 4G WiFi Maps and Speed Test OpenSignal Apk File Free. Use Opensignal to check out the era’s, in how much area you are getting the signals for your device. Use your mobile’s wi-fi hotspots and get faster data speed. You can boost your download and upload speed for your device. Signal compass will point you to the direction from where the signals are coming from. You can view local cell towers and in premium version get ad-free. The app can track your number of sms so you can count, how much sms your are sending. The app uses Google maps technology for viewing maps and if that is not supported you can ask us to use another map technology. The app uses cell tower id or location area to locate cell towers. So download app now and enjoy opensignal.