This phone has two problems I already found answers here: about can not turn on cold, and about yellowish screen. I want to add few things more to describe specific problems.
Display want to turn on over power button mostly after few attempts (sometimes many), or immediately when phone is a bit heated, but ALWAYS turn on from (completely) powered off state. Also when charging in powered off state, display always shows normally it’s charging. Because of this problem, I can not use the phone for telephoning because I can not to answer immediately on call.
But about yellowish screen I want to ask why 2/3 of lower part of screen is even more yellow? When watch some video, that yellow ink is not so noticeable especially when brightness is at maximum, but otherwise is.
Also, because I doubt someone is disassembled phone earlier although outside look normally, notification led is weak, and both speakers are also weak. I am right? … I mean, it is need to assemble the phone again properly, or reason is maybe another?
Like you advised I tried thoroughly to describe the problems. But in fact I bought three second hand S5 phones, because I like this model in general, also because I like to play with them to repair (although mostly have not time) because I am occupied with electronics, but not much about smartphones, and especially because they has very good camera for some occasions:
– two SM-G900F from which I described first here,
– second is practically fully functional except has small bug I will describe in second tittle,
– third is SM-G900V I will describe in third tittle.
Thanks in forward