You can self test all the hardware and software component of your mobile. A basic testing is possible with this application. This app is mostly useful to test your own mobile ( In case its not functioning well ) or other mobile before buying it.

Sensor testing : Following sensors can be tested using this application:
Barometer Sensor Shake Sensor Light Sensor Compass Sensor Step Sensor Acceleration Sensor & Proximity Sensor

Hardware Testing: Following Hardware can be tested using this application:
Battery CPU Specification System Specification Vibrator testing Camera Display and Headphone Jack & Mic Testing.

Storage Information : Details of Used RAM Free RAM and total size of RAM. Internal and External storage details like total used and free storage space.

Network and Wifi Testing : Network information like Service State Cell Location Call State Connection State and Signal Level.

Sim Details : Complete information of Sim.