What happens is that when I use my galaxy s5 and turn it on, the screen gives a yellow flash and turns black, everything is still working but the screen is not visible, if I lock it and turn it on again the same thing happens again or just continue everything normal, the hotter the cell phone is, the more likely it is that the screen will turn black, but once the cell phone is unlocked with the normal screen, the black screen is no longer put on until it is blocked again, happens