I have a Samsung Galaxy S5 that does a weird screen thing when I go to put it into sleep mode it will do a strobe flash of green that is lined horizontally before fully going dark. I thought that if I power my phone off and back on that it might fix the issue since it seems to be the answer to all, but nothing changed. I even took out my SD card and I thought I solved the issue but it came back within an hour at the longest. I even factory reset my phone but the problem got worse and now when my phone is put onto the dimmest lighting it will turn the background green and starts to strobe between dim and bright. In order to prevent this I have to keep the lighting at least half way and that doesn't always stop it. How do I get this to stop?