I have looked at other threads about it, but it didn't quite help
Just today my Samsung Galaxy S5 started showing this greenish/yellow tint on the screen. I read it could be the LCD detaching but I don't think that's the case. Thing is, when I go into settings, the screen color goes back to normal.
I rebooted my phone in safe mode too, and the color was 100% fine. Now when I went back to normal mode, the problem persisted. I thought it could be the app I had called Go Launcher, which makes the design nicer, but first, I've had this ever since I got my phone and this never happened. Second, I just uninstalled it and the problem persists.
I have not installed any other app that I think could be interfering with the display settings :/ All of them were installed months and months ago, there's nothing new on my phone. Except that I downloaded the latest Android update.
Apparently it was an app called CM Locker, which I have also been using for ages, and it never gave me that issue :c