CPU-Z : Device info is a free android tool that helps you to provide all the information about your device/phone.
1- Check Device Info (Model, brand, screen resolution,board, camera, network type and others)
2- Check System (API Level, Kernel, Build Version, Android Version, Root Access and others)
4- Check Battery (Technology, Health, Level%, Voltage, temperature and others)
3- Checks CPU Info (Architecture, Ram, Core, Processor, GPU )
5- Check Sensor (compass, magnetic field, Accelerometer, barometer, gravity, pressure and others)