[Q] stuck at lockscreen/ black screen - Galaxy S III Q&A, Help & Troubleshooting

Since 2 days my S3 sometimes doesn't turn on at all, or turns on at lockscreen and doesn't respond. It freezes
If I wait about 10 minutes, it reboots itself. Only other option is keeping power button pressed till it reboots.
It is a GT-I9300, running on latest stock dutch firmware: buildnr JZO54K.I9300XXELLA baseband I9300CEELL1
It doesn't freeze while using, it is a bit unresponsive sometimes.
When I keep turning on and off, it keeps working fine.
It happens about 4-5 times a day, after not being used for at least 15 minutes.
I am wondering it could be an app causing this?
I haven't installed new apps, but there was a update of Whatsapp I did install.
Should I flash the MB5 firmware? or just factory reset?

Reinstalled whatsapp, 1 day no problem, but today it starts all over.
This evening my s3 rebooted by itself and an hour later, it was stuck again, black screen, didnt turn on...
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Has anyone any clue?
It sometimes reboots itself, sometimes my screen doesn't turn on, until I reboot.
Never freezes while using.
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AW: [Q] stuck at lockscreen/ black screen
Boot up in safe mode and uninstall whatsapp. Then report if the issues still remain
|| Typed with my S4 Octa-Beast or my Note 10.1 ||

I tried, removed whatsapp again, and installed latest update.
Yes there is already a new update of whatsapp.
No luck so far...
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Yesterday it frooze while using, so I decided to flash the MB5 firmware.
So far so good, no more freeze in 1 day
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[PROBLEM] screen auto-activate

Hello guys...last days i have a problem with my galaxy s2 screen..when i lock the screen after a few seconds is reactivated about 3-4 times and then back to normal...without a reason can we fix it??
Thank you..
Display problem
Did you able to fix the problem? Because I'm experiencing the exact same problem and waiting clueless?
Evn I am facing the same prob.
It usually happens after a restart...
The phone screen keeps turning on and off..
What I do is clear the ram frist, and then kill all the running tasks using ATK..
Then it becomes finee then...
You may try it urself...
Sent from my GT-I9100 using XDA

S3 screen wakes up Intermittenyly

Screen wakes up intermittently. Specifically when an operation is done and the phone goes to sleep it intermittently wakes up for a couple of annoying times, then it goes normal, and out of nowhere it starts to wake up. I am on stock ROM and Kernel. Please shed some light on this.
Boot your phone in safe mode and check if the proplem persists. Maybe some app wakes your phone.
Wysyłane z mojego GT-I9100 za pomocą Tapatalk 2
SirKunon said:
Boot your phone in safe mode and check if the proplem persists. Maybe some app weakes your phone.
Wysyłane z mojego GT-I9100 za pomocą Tapatalk 2
Click to expand...
Click to collapse
How to boot in the safe mode?? ,,, I have same problem,,, and it's really bugging me: (
altaier said:
How to boot in the safe mode?? ,,, I have same problem,,, and it's really bugging me: (
Click to expand...
Click to collapse
How to goto the Safe mode in Samsung Galaxy S3*(all other Samsung Android phones should work in the same fashion)
Switch off your phone completely switch it on using power button once you see Samsung Logo on screen start hitting the left capacitive touch button i.e. Menu button.
You will see your device will boot in Safe mode and Safe mode will be watermarked on the left bottom of the screen. None of your downloaded application will be available in application menu.
How to get out of Safe mode in Galaxy S3Simple reboot the device.
http://www.androidsgs3.com/2012/08/samsung-galaxy-s3-i9300-running-in-safe.html
Sent from my GT-I9300 using xda app-developers app
Okay, here is my conclusion after a day and a half observation:
By curiosity I restarted the phone using power button. Since then that phenomena started to occur. Woke up whenever went to sleep for a couple of annoying times then a break and then a few more wake-up within next 7 to 15 minutes. The following morning I decided to restart the phone again using the power button and since then till now No Intermittent waking up.
It may or may not sound funny but I think the restarting-the-phone-using-power-button had caused that problem in my case. My precious is now absolutely fine since yesterday provided that during this entire happening I did not install any new application or make a tweak in settings.
Same here.I'm experiencing the same problems with the screen just waking up on it own.I thought it something to do with still being connected to the inherent.but turned out it wasn't.plus I've restarted the phone loads and it still happens every now again.........
So if any one could help or no the course.many thanks
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same here.. in other topic i was suggested to remove live wallpaper.. i'll try that but i don't know yet if that's the problem..
I noticed that his happens when I turned of my phone screen and immediately place my phone on some NFC enabled cards. Seems that the phone is trying to read it and turned the screen on. Not sure if this is the case for you.
I though of that but i turned my nfc off and checked for any possible sources of nfc chips.. but it was not the case..
Anyone found a solution to this problem? i made a quick google search and i found some people having the same problem but no "solution" :crying::crying:
Is the problem gone in safe mode?
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I dunno for sure. But clearing memory from task manager works for me with this one
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This problem is usually caused by a rogue app for me I had two such apps, one of them was the checkfus app and cloud music downloader app the problem only stopped when I uninstalled the apps.
Sent from my GT-I9300 using xda app-developers app
You could try AirPush Detector from market to detect this type of malware apps.
i9.0.1.3k galaxy imperator
this actually was for my gf phone and it seams to be working now after uninstalling a live wallpaper..
strangely enough my htc one x started doing the same last night.. as i didn't installed anything new in the last couple of days i was surprised but then i remembered that i had just rebooted my phone.. so it had to be something that was started during this reboot.. so uninstalled the most recent 3 apps, kept the same but, after another reboot, it stopped.. (i had alreday rebooted a few times after having the problem and before uninstalling those apps and it kept happening)
Android 4.3 wake up bug
My phone just started doing this wonderful bug. My phone dropped from 98% battery to 70% within an hour because of waking up every few minutes.
I tried booting in "Safe Mode" and that seemed to work as per this thread. When I rebooted in normal mode, the problem returned. I then clear my RAM using the Task Manager. So far after about an hour it seems to have fixed the problem.
Clearing the RAM seemed to fix the problem until I unlocked the phone. Now I have to clear the RAM every single time I want to lock the phone. I now HATE this phone. Thanks Verizon!

4.2 stuck in limbo

Hello,
I have a 4.2 which seems to be off and refusing to turn on, even to the recovery screen. The reason I'm not declaring it a brick is because it occurred suddenly after installing and attempting to open a non-root app, ScreenDim, off the Google Play store. I am rooted, but I haven't had any issues with it. Normally, I would consider that the app just turned my screen black, except holding the power button for a minute or more to force a shutdown does nothing.
Any ideas? This is quite the mystery for me.
Try charging it to see if anything happens
Sent from my YP-G70 using xda app-developers app

Photon freezes

I just unbricked my photon 4g by following threads before posted (before tried to install custom rom so it stucks on motologo after forum study recover using rds lite)
everything fine but freezes after every ten minutes i tried calling while freeze it rings in opposite but no change here in moto
After only removing battery and turn on it works normally but same repeat after ten minutes
no problem while continuous use only freeze after sleep only....
help me what would be problem...
Not sure this would ............turn off sleep/power saver and wait 20 minutes and see what happens? could be bad ROM or App your running with it.
Next, since you unbricked, you lost everything anyway. Put it back to stock?
Again, just my thought..........Good Luck.
Try factory reset and clean caches again.
Sent from my MB855 using xda premium

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Sent from my SCH-I605 using xda app-developers app

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