[Xiaomi Redmi Note 4 Questions & Answers] pXDAa:
For a week or two now,* I have been having some funny things happen with my Redmi Note 4 (Qualcomm, Global) phone.

Before that it had gotten water in it and basically shut down entirely, but they fixed it and got it up and running. When I picked it up they showed me watermarks on the screen, saying that the screen had frozen only once but that it may just be lagging.

Since then I have had a few symptoms of an issues, perhaps hardware issues, but potentially something that I can fix without paying more for parts.

Here are the things that happen:

- Music stops suddenly (screen on or off) and the music app has to be reopened (DoubleTwist, Miuiu's Music app, etc); Somes while in Doubletwist, if I click to visit home screen (square button) than the music stops. (this is the first issue that I noticed).

- 1-2 seconds of white screen before already-open apps appear after selected; Sometimes problems with apps loading or screen goes black when loading

- When closing apps or returning to home screen, it looks like the desktop(?) background comes up and then a second after is is re-populated with icons as if system is refreshing the home screen

- Once any of these issues begins, it usually worsens and the cell phone gets slower, behaving more and more strangely until not even useful to me; Reboot clears it right up for an hour or two or whenever this wierd stuff starts to happen again

-It seems like if I make a point of using the phone modestly, slowly, I can avoid these issues from starting up

- Sometimes reboot rometimes hangs on initial black loading screen

- Sometimes if I hit the power button to turn off the display, I can not turn it back on with that button (neither does the battery-dead orange light flash), so I have to reboot.

-When I turn the phone screen off while it has been working fine, I come back later, turn on the screen to find that it is now on the boot logo screen and it stays until I hard-reset the phone.

So, these are potential issues I have guessed at:

* Screen damaged? So far, other than watermarking at the top and some backlight bleed, sensistivity is perfect on the phone, and symptoms involving screen always seem to be triggered more by apps or pressing buttons.

* Apps or Android corrupted/internal memory damaged? I backed up via Settings and did a Hard/Factory Reset, then restored from backup. I still have the problems.

* RAM partially damaged? I test RAM with two apps and none of them showed issues. Namely my available RAM and used RAM reported always add up to the 4GB my phone has.

*Other Hardware Components failing? I used 3 apps to check all of the hardware devices and sensors that I could think of. Vibration is the only thing that does not work, and honestly, I don't care much about vibration.

Today I have suspected that settings may being at fault, and/or battery savers turning off my audio. Battery savers often identify my music apps as using "excessive amounts of power," perhaps because the speakers at involved, but it does make me think... I removed any battery-related and security apps, then turned off all battery saver options in settings earlier today. In 2 hours of music listening after that, I have not had any shutdowns, but I am not convinced I have solved the problems. In the weeks after this, the issue is back and the audio issue is always followed by the phone operating very sluggishly.

I have done a factory reset and restore, and the issue persists. Do you think there's any point in trying to do a clean reflashing of MIUI? Could it be a software issue or definitely hardware?

What advice can you give me?

Thank you for reading.