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RTINGS Home Theater/YouTube Unfortunately, manufacturers have yet to fully eradicate image retention. Several major display makers, such as LG , Samsung and Sony, host webpages coaching users on how to prevent burn-in. Phone manufacturers that deploy OLED screens, such as Google and Apple, also warn users about the potential for image retention. As LG reminds its users on its website, "it is possible to create image retention in almost any display if one really tries hard enough." It is important to stress that burn-in won't likely occur after just a few hours. Rather, tests indicate that perm