*Solved* - System UI Stopped working [System ui tuner][No ADB/root/recovery] - Samsung Galaxy S8+ Questions & Answers

My god the world needs to know this.
So below describes my last predicament. Basically was stuck at black screen on boot with system ui crash and had stupidly for no good reason blocked myself from getting adb
Phone was technically powered on and connected to my wifi.
logged into findmymobile.samsung.com and from there as the device was powered on and running but not usable i was able to find device and start a full wipe. With the wipe it got rid of the max power mode and uninstalled the system ui tuner allowing me to resetup the device like new.
Down side is as much as google handle 70% of a phone change over i still had to reset my watches and re do the fingerprints
So, galaxy S8+
Never been a fan of Samsung but a mate sold me his old s8+ for pretty cheap yesterday, today i installed system ui tuner and allowed it via adb, then as the battery was low i switched to "charge only" mode
Today i got a notification saying something about battery optimisation (Max Battery Saver Mode) and i was all about it so i clicked yes and whatever without reading it expecting it to clear catchs and kill some background apps. anyways a few seconds later it rebooted itself and popped up with the message "system ui stopped working". Literally the only things that can happen is when i click the bixby button it says "cannot use bixby while maximum power saving mode is on". and if i hold the power button i get the shutdown and reset icons but when clicking them nothing happens.
I have tried safe mode, still get the same result with ui stopped working
Pressing and holding the power + volume up + bixby button gets me to a screen with some info up to continue and down to cancel, once pressing up nothing happens apart from a screen saying downloading (nothing happens tho)
Not sure what to do

Thanks for the details.

Related

[Q] System UI crashed, now it won't respond...

Device: HTC One M8 running Liquid Smooth from may 13th.
This is rather odd - All day, my phone was working just fine. As I was listening to some music (through the speaker... or should i say speakers boomsoundhighfive:highfive, I pushed the power button to unlock the phone to text somebody, except all I could see was the music app (apollo) in the background with a dialogue saying that android system UI has stopped. Every time I hit "ok", it popped right back up. I'm assuming that that was because it was trying to restart, and it just kept crashing.
A bit later, it was still doing the same thing when all of a sudden I could no longer turn on the screen. However, my music is still playing, and I can control the volume with the vol buttons. The only other thing I can do is double tap the screen to get a bit of hepatic feedback from double tap to wake. Also, the low battery notification LED is now flashing, as it was at fairly low battery when this started (around 30, it's been about 45 minutes since this started).
I can't reboot through ADB as usb debugging isn't on, and I tried holding down the power button for about a minute with no luck.
Anybody got any advice? My current plan is to wait for it to die and hope it reboot normally... Otherwise I might boot straight into recovery and restore a nandroid...
Alright, sorry for creating this thread - it died, I plugged it in and turned it on. It appears to be completely working. Anybody know why this would happen? It seems a bit odd.

[Q] [HELP] -Garmin-Asus A10 -Requesting for technical support

Suspected problem: Bootloop
It all started when I connect my phone (Garmin-Asus A10 (v5.0.82 (updated with GarminAsusPhoneUpdater_Telenor_v2.0.3.exe of denmark))) on laptop through USB cable, the USB slot looks slightly damaged already upon looking at it, after connecting the expected to be happen is that the back-light will turn on, but what happen is that the phone has no response from it, I try to press the power button still no response, I removed the battery and bring it back and try to turn on again the logo appears (without vibrate which is supposed to be present in turning on my phone) then disappear after 7-10 secs.
It's already stock on the logo as I turn it on, the moment I pressed the power button the logo appears for about 7-10 secs then it disappear, also when I removed the battery and put it back the logo appears without pressing anything and disappear again after 7-10 secs.
I try to wipe the data through Volume Up + Volume Down + Power Button the ** WIPE USERDATA ** appears but then after a few secs it disappear again which is supposed to last for about a minutes.
And also I still can go to the **USB POLLING MODE ** through Volume Up + Power Button but seems like there is nothing to do with that thing.
I know it will be easy to fix this with the use of Garmin-Asus phone updater but it requires the phone storage which is so impossible to access at this point.
Hope you guys can help me with this, I badly need that phone.
----
Updates:
I can already open the phone and go to the home screen and menus... etc., but only when I close/cover the 1st metal/copper of the battery (back view (- to +))., but then I get an error saying that "The installed battery is not compatible with this device"
Upon doing this the phone is keep on rebooting, even if I already turn it off it keeps on turning on by itself, also I can't use any network at this point.
I already formatted the phone using master clear & **WIPE USERDATE** (Volume up + power button) still got the same problem.
And also updated with 006-B1243-00.update (The last .update file I used to update my phone (V5.0.82 DN)), upon rebooting after verifying the .update file it just blink twice then the update stops already at that point.
Updates 2:
Physically there is nothing wrong with the phone, I can still use the phone but as I mention already "only when I close/cover the 1st metal/copper of the battery (back view (- to +))." everything works fine except for the error "The installed battery is not compatible with this device" the red with "X" battery (Screenshot-1434948958913)
Also I notice something from my storage the "System Volume Information" (Screenshot-1434949331146, Screenshot-1434949336619, & Screenshot-1434949345666), I'm pretty sure that I haven't seen yet that before, I deleted the folder still it comes back.
Also once I connected my garmin phone to my computer the USB connected thing (Screenshot-1434949876071) don't disappear just until I restarted the phone.
Thanks in Advance.

Android 11 suddenly unable to unlock screen via power button or change volume.

Hi, I started having the strangest issue 2 days ago. Phone model is Samsung Galaxy A50.
I have been unable to unlock my phone once I pressed the lock button or if it went to sleep (screen off).
The only way out of the issue is to restart it by pressing volume down and power for 5 seconds. I put the screen timeout to 10mins (which is the maximum). But no long term solution. Whenever the screen turns dark it stays dark. If a call comes in, the phone vibrates (or ring) but any interaction with the phone is impossible. If I play music, the music continues once the screen is off. The sound can be turned up or down, but it's the only thing that can be done.
While the screen is on, changing the volume via the buttons affects the actual volume of the music, but there is no UI indication that the volume changes, no popup nothing.
So all physical buttons are working correctly.
I have trie "reset parameters", I have tried "reset all data" (backed up everything through Smart Switch). It doesn't change a thing. The phone is reset (still on android 11 though, although I bought it on android 10...) but the issue remains.
Now something very interesting :
Just now, I setup Phone Link for windows 10, so that I am able to see and answer texts and phone calls while at the office. Which works, it sort of defeats the purpose of a "cellular" phone but well...
HOWEVER : while my phone is connected to my desktop through Phone Link. I can lock and unlock at will, change volume and see the UI pop up (via the windows interface or directly on the phone, same behaviour) It's basically fixed. I thought it was fixed for good, so I disconnected my phone from Phone Link. The screen went black as before and there was nothing I could do except reconnect it via Windows 10 (then it immediately starts behaving as usual again...).
My guess is it's definitely software. I just don't understand why a factory reset didn't do the trick...
I wanted to try and reset through the bootloader, but I never managed to effectively get into the bootloader (through volume up and power while the phone is off).
I do not recall making any updates or installing anything just before these symptoms occured. I did install a firmware update that was available after these symptoms started but to no avail
Has anybody seen this before ? Thanks in advance

Question Boot issue - not powering on and unable to reach recovery mode

Hi,
I own an S22 ultra Exyonos 128gb and i'm having severe issues.
I was using the device (chrome) and it suddenly froze, and powered off. I powered back on, and it almost immediately powered off again. Since then ive been unable to power on.
I've tried force restarting, plugging into a PC with a usb-c cable and holding down volume up and power for 5-10 secs, but nothing happens. The phone simply gets stuck on the Samsung logo screen, sometimes the basic "Samsung" screen, and sometimes the "Samsung S22 ultra 5g secured by knox" screen.
Also when trying to charge with a cable, no animation to show charging pops up, ive not tried wireless charging yet.
Any idea how I can boot into recovery mode
If vol up + power doesnt work?
Thanks in advance
Can you boot into download mode (cable unplugged and device off press Vol Up and Down together and plug in cable) ? What is the screen showing after you agree to enter download mode ?
Is your device rooted or else modified in any way ? Did you do anything special prior to this behaviour ?
Hi s3axel,
thanks for replying.
yes, I can access download mode, it comes up with a Warning page saying "A custom OS can cause critical problems in phone and installed application. if you want to download a custom OS, press the volume up key"
No, the phone isn't rooted.
Nothing out of the ordinary was being done, I was just on google chrome browsing Reddit, when all of a sudden it froze, wouldn't respond to touch or power/wake button presses, and then crashed, and hasn't been able to boot u since.
I did have issues with the phone previously randomly crashing and then restarting and thought it could be malware. I booted into safe mode to see if it occurred again and if so an app could be the cause, but it didn't. I then booted normally and ran a virus scan with Samsungs in-built anti-virus software and then again with Malwarebytes, but nothing was found. it happened a few more times before stopping after a software update, so I thought nothing more of the issue until now.

Soft Bricked S7? Recovery Mode Keeps Getting Interrupted

A few weeks after switching from my old S7 Edge to my old S8 (which I did about a month ago), I tried turning on my S7 Edge only for it to enter recovery mode. Since the power button is broken, I figured I would have to reboot it out of recovery mode using ADB on my PC. When I switched my S7 on again the next day to enter recovery mode and connect it to my PC, I got to the "installing updates" screen that precedes recovery mode. This screen showed up for about three seconds before my screen went black. After 10 seconds my phone rebooted and went back to the "installing updates" screen, went black, rebooted, and so on.
I think my phone might be out of battery so when it charges a little bit, it automatically tries to enter recovery mode, which uses up all the power in the battery and causes it to die, restarting the cycle. Is there any way I can stop my phone from automatically turning on when it is plugged in so that it can charge enough to actually make it to recovery mode?
Thanks!
For some reason, the bootloader on this device remembers if you were last booted into recovery, and will return to it on the next poweron, so - without a working power button - there aren't very many options.
The power button could be an easy fix - depending on if it's stuck or damaged. The outer parts of the volume and power buttons on this device are interchangable, so that could make all boot modes possible again. Opening your device may sound scary, but - with good research and some patience - you will find it is certainly doable using basic tools. And if you don't want to do it yourself, a local repair shop would probably do it for cheap as well.
As far is I know, there isn't any usable software fix without a working power button.

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