S5 green/yellow-ish flickering screen at low brightness

I hate my Samsung S5 mobile I am on a pension & am still paying off this phone it is playing up before it is paid off??

I had this issue for a long time. I thought it was hardware related or even heat, but it wasn’t. It’s not till I upgraded my phone, that I reformatted the S5 completely (clearing everything cache etc). Once I reformatted the problem disappeared (I also removed the memory card). I didn’t install any apps at all and the phone is just used as a spare for calls. In my opinion it is therefore app related, or an app that affects things. It is irritating to have to reformat, but it did fix the problem which was exactly the same as you described.

My phone would flicker at low manual brightness, or once the phone light fades and is about to go off, it flickers in a weird greeny/yellowy way.

I had the same issue and thought it could possibly be a faulty screen connector, so I decided to remove the LCD assembly. I didn’t have a good enough heater for the screen adhesive, so when halfway through I decided there was too much resistance prying it off, I put the phone back together and now the issue is no longer there. I haven’t tried any other fixes prior to that (kinda reckless, I know, going for the intrusion option straight away, but I wanted to play with my new ifixit pro toolkit, so cut me some slack haha), and I think it may have been a screen bend issue.

Hope it helps.

I had this problem with my old S5 which is a good phone. Its a simple fix I did it in 5 minutes. Its not software its simply at the back of the phone near the on/off power button. You just have to prise off the small cover next to the power button. Under this there are 2 little contacts that just need bending up a bit more. Search the utubes for this , I just followed the utube. Works great now.