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Need help identifing reason for strange and frequent freezes

Hi guys
I have this strange behavior going on in my Sentation.
Out of nowhere my phone started to have strange screen behavior... Didn't light up after pressing the power button (had to phone my self in order to get screen on).
The next thing was that suddenly the screen goes to maximum brightness or goes to minimum without any explanation (tried both auto brightness or manual).
After that I noticed that the screen went off when I was using it but when I pressed the left side of it it lighted up and off again... making me think of some kind of bad contact underneath. As I already had changed a broken touch screen for t3 times, and let the phone fall for several times I thought it had to do with some plug out of line...
I disassembled the phone completely and mounted up back again. The thing is that the phone started to freeze every 5 minutes (screen on but completely freezed. I have to pul out battery). Sometimes it freezes even in the recovery menu. I've tried several rom's with full wipe and not installing anything and its all the same.
Some times I still not that the screen goes off during the freeze but when I touch the left side it goes on again, but that doesn't change the freezed state even that I let down the phone for several minutes.
I disassemble the phone again, tried different back cover and different battery (one stock and other extra strength) I tried also all the suggestion related to the small pin in the back not connecting well with the back cover (adding an aluminium foil, pulling the pin out, etc..)
Nothing seams to resolve anything so I have clearly an hardware problem... but I don't know what to replace or where to look the damage!!!
Can anybody help me please?!

Update
I have an update on my problem:
I noticed that when I leave the phone on top of some kind of metal part and don't touch it it works all day without any problem but, as soon as I start to touch the phone, it freezes within minutes!
Could it be some kind of static electrical problem? How to resolve it?
I would apreciate any help
Thanks

[Q] Need expert openion, if its Hardware or Software problem

I got a used HTC sensation XE with audio beats, with WiFi not working (GB was installed). Wifi & Teathering services always remained on "Error" when wifi turned on. Bluetooth, SIM services all were doing good. Used it in this condition for 2~ days, all went fine exept I once found it powered off while it was on wall charging.
Then I upgraded it to ICS downloading Stock ICS ROM from this thread. Which was isntalled successfully and the WiFi started to work.
It worked fine for 2 days, except my phone restarted on its own once or twice. At that moment i was using 340 MB of internal storage for apps and 750 was free. One night i was playing "Cut the Rope" and my phone prolonged a game sound and turned off, I removed battery and replaced it and turned on, but nothing happened, it remained off. Attached it to charging but no response. I left it there and after about an hour charging light turned on and it powered on.
From that moment, Phone often shows message "Low Storage Space", Hangs and then turns off. And fails to turn on again, sometimes for 24 hours. I did a "Factory Restore" from boot loader (power + voluem dwn), but its still behaving same.
Lattest: It turns on by pressing power button for 20 to 30 sec. Sometime goes upto lock screen and turns off, sometimes turns off on first screen and most of the times dies at audio-beats screen (after or before change is screen brightness). Remains dead for some time then again to same position.
Any expert openion/ experiance/ etc....
I don't have option of replacement. What to do? :crying:

khaled_j_k said:
From that moment, Phone often shows message "Low Storage Space", Hangs and then turns off. And fails to turn on again, sometimes for 24 hours. I did a "Factory Restore" from boot loader (power + voluem dwn), but its still behaving same.
Lattest: It turns on by pressing power button for 20 to 30 sec. Sometime goes upto lock screen and turns off, sometimes turns off on first screen and most of the times dies at audio-beats screen (after or before change is screen brightness). Remains dead for some time then again to same position.
Any expert openion/ experiance/ etc....
I don't have option of replacement. What to do? :crying:
Click to expand...
Click to collapse
But it never turns off just sitting at the bootloader or fastboot screen? Doesn't turn off while doing a factory reset? Only when trying to load software and activate hardware booting into the OS?

MS Gray Man said:
But it never turns off just sitting at the bootloader or fastboot screen? Doesn't turn off while doing a factory reset? Only when trying to load software and activate hardware booting into the OS?
Click to expand...
Click to collapse
Yes it didn't turned off sitting idle in bootloader. But it completed its factory reset in 3 restarts; 1st right after loading stock, 2nd configuring apps 10/36 and 3rd at 23/36. Then 4th time it died on fresh Lock Screen.
NOTE: I removed SIM, SD Card in the very beggining of the problem.

khaled_j_k said:
Yes it didn't turned off sitting idle in bootloader. But it completed its factory reset in 3 restarts; 1st right after loading stock, 2nd configuring apps 10/36 and 3rd at 23/36. Then 4th time it died on fresh Lock Screen.
NOTE: I removed SIM, SD Card in the very beggining of the problem.
Click to expand...
Click to collapse
I would try replacing the battery... it's about all that's left as it appears your phone is locked and more or less all stock..
Cuts down your options for things. Any sign of moisture exposure?

MS Gray Man said:
I would try replacing the battery... it's about all that's left as it appears your phone is locked and more or less all stock..
Cuts down your options for things. Any sign of moisture exposure?
Click to expand...
Click to collapse
Haven't tried out any other battery, I tested it on voltage meter and it showed ok, BUT you have got a point; I must check it with some other battery of working phone.
Moisture:: Well there was Mist/ Fog a few days back but mostly I stayed at warm place + I kept it in fromt of fan heater after ealry episodes..

Galaxy S8+ black screen?

Hey there,
I have got a Samsung Galaxy S8+,SM-G955N.
Some days before,my phone was stolen by a thief,then I asked for the police for help.The police found the phone for me in the end.
I was so happy at first for my phone was survived.But then I found my phone's screen is always black.When I connect my phone with the wireless charger and charger,I can hear the sound of connecting the power,and I can hear the notification sound,when someone calls me,I can hear the ring!And "hi,bixby"also works!I wonder why?!
I have rebooted so many times,and tried to reboot the phone to recovery mode and download mode.I ended up with failure.
(My phone has been flashed a custom ROM and TWRP.My phone has a lock screen password and lock screen protect which means you can't reboot and power off.)
I really don't know what the thief had done......But my phone wasn't fall off from high places I can be sure......For the phone has a perfect body.)
Then I tried many times to reboot one day the screen recovered! But I found that the screen is not stable,which means it has many bars,it will disappear and then appears at another zone.Just like the old TV set.
I want to wipe /data,then I rebooted to recovery mode.But.:crying:the screen then do not working...... Just like before.
Then I tried many times,I entered the recovery mode.The screen works in the end,but the colours seems very strange,a little purple.and the touch screen don't work at all.I used the mouse to swith the brightness in TWRP,but when I turn the brightness to over 80% or lower than 40%,the screen looks dark.I can hardly see the contents.
So I want to ask you all for help,is this a hardware or a software issue?How can I solve it?
Thank you all and I love you all!!!!!!!!!:crying:
I am a student......And I am so poor.....
Thank you all again!!!!!!!!!!!

I'm hoping you have warranty. Seems like you have done a thorough job at trying to problem solve. I'd head to a repair place for a quick confirmation and maybe repair.

seems like a broken/damaged flex in the screen

help me please my cell phone restarts all the time

Hello I have a problem and I hope you can help me I have a motorcycle 3 turbo and I had it working with a custom rom and I had it with the screen loose but it was good, then I do not know how the screen moved and I wanted to accommodate it and suddenly I raised and lowered the intensity of brightness until in the main picture you could see at the same time the applications drawer looked like a ghost on the screen and suddenly it turned off I wanted to turn it on and nothing that turned on when I wanted to turn on it was very hot I took it with a technician and said that it was the screen that fixed the image but the cell was restarted every minute I wanted to enter the recovery but it was black screen and it would not let me enter the recovery and install the official stock rom and follow the reboots, now install a custom rom and I have to have an active application in the background to block the screen does not restart the cell phone because if I do not have an activated application the cell phone goes back to reboot someone could I help you how to resove it please? thank you for your attention

Question how to fix random black screen after opening phone

My z-flip3 5g has a strange problem. If i close it (by folding the screen closed), then after opening (unfolding) the screen and touching the right side button/fingerprint reader to unlock it, i hear the quiet "click" noise that indicates the phone is unlocked, but the screen stays black. i then have to repeatedly push the lock button on the right to lock the phone again and unlock it again. after several attempts the screen finally turns on. sometimes it will go black a few seconds later and the same issue continues. but other times the screen will stay on and work fine.
i have noticed that if i do not close the phone (folding the screen together) then i do NOT encounter this issue. the phone screen turns on when pushing the right side button (or touching the fingerprint sensor) and everything works fine.
this issue started yesterday, a system update installed yesterday as well, could it be related?
i already restarted many times, booted into recovery mode and wiped the cache. nothing has helped. the only way to avoid the problem is by not closing (folding the screen shut) the phone.
One UI v 5.1
Android 13
Security patch level Feb 1, 2023
fully stock/not rooted

I have same behavior. Did you solve this problem?

Unfortunately no. Did a factory reset, hoping that would help, but the issue persists

Mine has recently started doing the same. Last update was right before this started several weeks ago. I don't have mine set to require fingerprint, it should just turn on after opening. If I open it partway, it will turn on, then turn back off when fully opened.

hi,
i have same problem, it's software problem?

Not completely sure about that. They update this thing so often, it could be coincedence that it started shortly after an update. I want to try blowing out the hinges as I've got some dust under there that I hear when opening the phone. Definitely not a phone to put in your pocket after working in the wood shop!

Digital Dragon said:
Not completely sure about that. They update this thing so often, it could be coincedence that it started shortly after an update. I want to try blowing out the hinges as I've got some dust under there that I hear when opening the phone. Definitely not a phone to put in your pocket after working in the wood shop!
Click to expand...
Click to collapse
and don´t take it to the beach either!
What is also strange is that when I close the phone and open it a few seconds later, there is no issues whatsoever. However, if I leave it closed a few minutes, then when opening it, the problems with the screen staying off happen.

Yes, definitely don't take it to the beach!
@netridah , mine is doing exactly that. Which makes me wonder is it a wake issue, or a mechanical/sensor issue with the hinge.

one more to the bill
I checked the flexes and I warmed up the logic nothing works

I have the same issue: Flip 3 - 5G with OneUI 5.1 - 1 April Patch level
When I open the phone I eventually see for less than one second the lock screen, the goes black and unresponsive.
Then I have to press the button to turn the screen off (even if it is already) and then re-press the button or use the fingerprint to turn it on and it will work (eventually, sometime I have to do it a couple of times).
I already googled it on many forums but no solutions, I've tried to:
Disable the always-on display - no result, at first looked like it did the trick but the day after was having the same issue.
Check all the updates of the system components like always on-on display (settings --> lock screen --> always on display --> info), no help everything is up to date.

Hi,
I have the exact same problem, only difference is that I'm on the z flip 4.
I get the black screen and sometimes when opening or closing the phone the screen can flash in a bright yellow or green color.

I got a motherboard but the problem continued
Next step changing screen is very expensive at the moment

This is driving me crazy - also started the day I updated to OneUI 5.1.
Hoping for a solution soon!

I am also encountering this problem, I went to samsung repair shop 1 month out of warranty, sales person said it is a screen issue and needs to be replaced for 430$. Mine was before the update, i took mine near the pool, got wet maybe, as the alarm for usb charging mentioned unplug it immediately, day after it began randomly dark when phone is openned fully. Zflip 3

Oh just an update, i did some tinkering today, Good lock all updated, disabled clockface, sprayed some contact cleaner on power button, and hinges, fold close and open for a minute or two, fell asleep for 1 hour, and when I woke up, my screen works back to normal, it wakes up when unfolded, no more waiting or hitting the power button several times. hope this stays like this.

piper_indebt said:
Oh just an update, i did some tinkering today, Good lock all updated, disabled clockface, sprayed some contact cleaner on power button, and hinges, fold close and open for a minute or two, fell asleep for 1 hour, and when I woke up, my screen works back to normal, it wakes up when unfolded, no more waiting or hitting the power button several times. hope this stays like this.
Click to expand...
Click to collapse
How to disable the clockface? what would that contact cleaner be?
thanks

firstchris said:
How to disable the clockface? what would that contact cleaner be?
thanks
Click to expand...
Click to collapse
Hi, few days now, I still have occasional blacking out, I've tried putting my phone on safe mode, and this seems to solve the problem. I suspect it may not be hardware fault, but 3rd party software, "good lock" or something else that conflicts wit one ui, that makes the flipping open lag waking up. Contact cleaner used for electrical stuff

Didnt use my z3 for about a week let the battery drain.. then charged it too 100% without turning on the phone.. my phone back to normal now.. hope it works for you guys

Hello,
I am using Z Flip 4 and last night I started having this problem as well. I can confirm 100% that my phone has no hardware nor a history of impact of any sort that's why it's really frustrating having this kind of problem.
Has anyone already found a resolution for this problem?

Z flip 4 here also. Had the same problem with the screen. Took the phone to Samsung and they changed the screen, frame and back panel's for free under warranty.
They said it's a hardware issue.
So better to take the phone to Samsung.