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Learn How To Calculate The Battery Usage Of Your Phone !!!
Other than the screen size, the camera and the OS, the essential thing in a smartphone is its battery. It relies on upon the quality of the battery that to what extent you can utilize your phone under ordinary utilization in a solitary charge. The battery size is measured in mAH means milliampere-hours. Now this means how much milliampere current the battery can..... 
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