A touch screen is one of the most fundamental, important, and usable components of a mobile phone or a tablet device. You can easily check and test if all of the touchable areas of your device are responding to your touch properly or not? You can also easily check if your mobile phone or tablet device supports multi-touch or not and if supports multi-touch then how many touchpoints does it support. You can check and analyze the quality of your device’s display like its color purity or color r