Pure White Screen 1 Hour Time. It can be used for white screen mobile test, white screen laptop test, white screen tv test, white screen lcd test, white screen monitor test, white screen machine test, white screen video, white screen for smart phone, white screen iphone, white screen android, etc. It is for all devices. White screen also used for laptop fixes. and a white screen laptop fix must be checked at the time of buying laptop and other devices. White screen problem in mobile can also be fixed and checked with this video.