1. A method for detecting defective pixels and screen imperfections, comprising the steps of: positioning a mobile device having a display screen in a testing chamber; capturing an image of the display screen using a camera directed to the display screen, wherein the image has a plurality of image pixels and is a photographic representation of rows and columns of a plurality of display pixels of the display screen, each image pixel having Red, Green, and Blue values (RGB values) varying from 0-255; performing a pixel detection analysis of the image; determining an image pixel of the plurality of image pixels is a questionable pixel if at least two of the R, G, and B values of the image pixel are greater than 30; comparing the questionable pixel against 8 surrounding pixels: categorizing the questionable pixel as a drastic change pixel when more than 4 of the 8 surrounding pixels have a significant variance from the questionable pixel, the categorizing step including calculating a difference for each of the R, G, and B values between the questionable pixel and each of the surrounding pixels, a surrounding pixel of the surrounding pixels having the significant variance from the questionable pixel if the difference of one of the R, G, and B values is at least 25 and the difference of at least one of the other two R, G, and B values is greater than 3.