This app allows you to test the correct operation of many parts of your device (phone or tablet). You can test the following: ·Device's sensors: accelerometer, gyroscope, compass... ·Wifi: internal & external IP, gateway, DHCP server... ·Telephony: signal, network type, external IP... ·GPS: satellites, latitude, longitude, speed... ·Battery: health, level of charge... ·Multitouch screen: how many fingers recognize your device?(not available in Android 1.6) Also displays system information about hardware and software like CPU properties, RAM, storage, kernel version, screen, ...