content: Im not sure if I changed the screen settings a while back or what the deal is. My phone is not set on any night reading inverted colors any screen darkening setting at all. However when I open a pdf to fill out  sign etc... The form is black boxes white g when I type in my information I cannot see the letters or what Im typing on that one line. If I click on abother box elsewhere I can see what text I typed in but going back to add to or edit that same text the text goes black.