CPU identifier is the best app that reports information about your Android.
Features :
*System Info : detailed information about your Android OS, runtime, kernel and SDK.
*CPU Info : provides information about CPU architecture, CPU cores with real-time core clock measurements and CPU usage.
*Display Info : reports information about screen resolution, pixel density and aspect ratio.
*Graphics Info : provides information about GPU and video driver.
*Memory Info : detailed analysis of RAM including RAM usage, buffers, cache and swap.
*Camera Info : diagnostic tool for your camera hardware, reports information about picture resolution, lens, focal length and other camera features.
*Storage Info : shows information about storage devices (HDDs, eMMCs, SD Cards).
*Battery Info : detailed diagnostic of your device battery including charge capacity, output voltage and battery temperature.
*Sensors Info : reports information about sensors like accelerometer and magnetometer including range, resolution and power usage.