Phone Information is a useful app that tells you all the information about your phone like: Phone model,Processor name,Processor frequency,Phone serial number,MAC Address,Android Version,Total and used RAM Memory,Internal and external memory,battery temperature and voltage,screen density,and size and hardware codename.
Processor name:The name and the generation of your processor.
Processor frequency: It tells you the maximum frequency your processor is capable of.
MAC Address:your phone's mac address network.
Screen density:number of pixels per square inch
there are three types of screen densities :Low density,Medium density and High density.
RAM Memory: Total primary Phone Memory.
Your total external and internal free space on the phone and SD Card.
Also This app can tell you the amount of free space on your phone and sd cars and your free ram memory