Develop Bugs

[Q] Stuck on boot screen, tried everything. Please help

Hi guys,
I updated to JB on my rooted S3 when it first came out a couple months ago. Everything was fine until a few days ago, when all of a sudden it turned off on its own. Since then the phone won't power on, it seems to always restart itself at the Samsung boot screen. I tried to do a factory reset, but the phone still restarts itself. Tried to put into download mode, no go either. Any idea on what I could do to fix it?
Thanks!

So I'm trying to mess with the phone again. I insert the battery and press the on button. The Samsung logo briefly flashes then the Samsung Galaxy SIII screen shows up. Then no response after that. The blue/purple Samsung logo used to show up and freeze, but now it doesn't even get to that point. As I try to power up again, there's no response until I take out/put in the battery again

If you are getting to a boot screen, it is only a soft brick. Do you know how to put your phone back onto stock rom?
To get into download mode
1. pull the battery, put it back.
2.hold power volume down and home key at the same time.
3.when your phone vibrates, let go of the power button.
4.when a screen comes up, let go of all buttons.
Sent from my SGH-I747M using xda app-developers app

Deoxlar said:
If you are getting to a boot screen, it is only a soft brick. Do you know how to put your phone back onto stock rom?
To get into download mode
1. pull the battery, put it back.
2.hold power volume down and home key at the same time.
3.when your phone vibrates, let go of the power button.
4.when a screen comes up, let go of all buttons.
Sent from my SGH-I747M using xda app-developers app
Click to expand...
Click to collapse
I tried that. But the phone just restarts itself as soon as the screen come up

Press the up botton to get into the download screen. You are holding the home and down too long. Release it right before you see the screen and press volume up to get to download mode.
Sent from my SGH-I747M using xda app-developers app
---------- Post added at 08:13 PM ---------- Previous post was at 08:13 PM ----------
If you still have a screen, it means you will be able to get to dl mode. Look it up to make sure you are doing it properly.
Sent from my SGH-I747M using xda app-developers app

Screenshot Not Working

Power+Vol Down buttons are not working to capture a screenshot. I know it worked sometime last night. Definitely sure I am holding down those buttons. Tried rebooting, powering off and back on and still does not work. Running Logcat as root doesnt show anything happening when holding those buttons down. They work individually (holding power brings up the power menu and holding volume down changes the volume).
EDIT: So I noticed that a bug report was created. Emailed it to myself, and saw this line in the textfile:
WindowManager: Screenshot failure taking screenshot for (1920x1200) to layer 21005

Hey man, might be a hardware issues, was able to take a screenie on mine.

Working here too

I've not successfully screenshotted. Feels difficult.

cannot take screen shot
I also can't take screenshot with the power and vol down! what happen? do i need to set anything?
---------- Post added at 02:16 AM ---------- Previous post was at 02:02 AM ----------
when i use an screenshot app to take a screenshot, it's total black, no screenshot at all.... I'm on a rooted JSS15Q
Pressing the power and vol down, nothing happen

I'm holding them both at the same time and the screenshot is working...
Sent from my Nexus 7 using XDA Premium 4 mobile app

Wifi in sleep mode
With these advanced wifi settings: Keep wifi on during sleep - never, scanning always available - unchecked,
should i be receiving notifications like email when my tab is asleep via the magnetic switch on the case? I figure it's either a ROM bug (12/20 build 3) or I don't understand something about sleep mode. If its relevant, I switched back to elementalX v2.3 kernel. I sent myself an email and a few seconds later, my tab chirped, even tho the case was closed w mag lock enabled. What am i missing?
k.uma

[Q] locked in safe mode

my wifes phone just entered safe mode the other day for no reason. we tried rebooting, pulling the battery, factory reset with no luck. then i rooted it, wiped it and installed a different ROM and it is STILL in safemode. im at a loss, how do i get it out of safe mode?
this was a refurb and im past the warranty so i think i am SOL?

Zedicus said:
my wifes phone just entered safe mode the other day for no reason. we tried rebooting, pulling the battery, factory reset with no luck. then i rooted it, wiped it and installed a different ROM and it is STILL in safemode. im at a loss, how do i get it out of safe mode?
this was a refurb and im past the warranty so i think i am SOL?
Click to expand...
Click to collapse
Safe mode is usually entered by one of the volume buttons or touch buttons being held during boot. if you have a case on it, remove it and try again. If this does not work try the volume buttons and see if you feel the slight click when they are pressed. If you don't feel it, you may have a button issue.

To get into safe mode I think you have to push the left capacitive button at a certain time. So make sure nothing is touching that when booting. I've also heard removing the sd card may help, if you have one in that is. If neither of those are the issue try removing the battery for a while, like 20-30 min (push some of the buttons a couple times with it out to make sure no charge is left).
If still nothing it might be hardware.

the volume down button is not working BUT i can feel it click when it is pressed. no case or SD card installed. i have booted it with out the sim card even and still in safe mode. i will take the battery out overnight and see if that helps.

Zedicus said:
the volume down button is not working BUT i can feel it click when it is pressed. no case or SD card installed. i have booted it with out the sim card even and still in safe mode. i will take the battery out overnight and see if that helps.
Click to expand...
Click to collapse
Safe mode can ONLY be entered by this option. When holding the power button and the power menu comes up, you hold down on the power off part on the touch screen for like 5 seconds. It will tell you if you want to enter safe mode. Now, the only way to get out of safe mode, is by rebooting

jamescable said:
Safe mode can ONLY be entered by this option. When holding the power button and the power menu comes up, you hold down on the power off part on the touch screen for like 5 seconds. It will tell you if you want to enter safe mode. Now, the only way to get out of safe mode, is by rebooting
Click to expand...
Click to collapse
so then the volume down button should not be causing it to boot into safe mode. so why no matter what, when i turn it on, does it always go into safe mode?

jamescable said:
Safe mode can ONLY be entered by this option. When holding the power button and the power menu comes up, you hold down on the power off part on the touch screen for like 5 seconds. It will tell you if you want to enter safe mode. Now, the only way to get out of safe mode, is by rebooting
Click to expand...
Click to collapse
I absolutely love the confidence you show by using all caps on ONLY, so here is a video I just posted to Youtube of the Volume down button forcing safe mode. Try it for your self. http://youtu.be/yQlfbLTERf0. BOTH methods work. OP, you claim that the volume down button does not work? this is likely your culprit.
---------- Post added at 10:23 PM ---------- Previous post was at 10:20 PM ----------
Zedicus said:
so then the volume down button should not be causing it to boot into safe mode. so why no matter what, when i turn it on, does it always go into safe mode?
Click to expand...
Click to collapse
Volume button is likely the issue.

BCSC said:
I absolutely love the confidence you show by using all caps on ONLY, so here is a video I just posted to Youtube of the Volume down button forcing safe mode. Try it for your self. http://youtu.be/yQlfbLTERf0. BOTH methods work. OP, you claim that the volume down button does not work? this is likely your culprit.
---------- Post added at 10:23 PM ---------- Previous post was at 10:20 PM ----------
Volume button is likely the issue.
Click to expand...
Click to collapse
i was afraid of that. i needed a reason to buy a new tip for my soldering iron. i will get the meter out and see if it is stuck closed even though the button still makes a noticeable click when being pressed.
thanks for the help

EEK. Now that sounds scary. Good luck, hope it works.

Help Tab S-T705 Won't Turn On!!!

HI all my tab s will not turn on, but if i plug it in to a wall outlet it turns on fine, but it does not boot into android it boots into recovery menu. Long story short i sent it in for repair to Samsung last month the day i got it back i went on holiday. that's where the same issues came back screen flickering erratic battery not charging up properly freezing up etc etc. When i sent it to Sammy it was on kitkat and all Sammy service center did is update it to lollipop ran some diagnostics and sent it back to me.
Due to it not booting up i had a old 4.4.2 firmware file on my computer so i flashed it since then it don't boot to android it boots to android recovery menu and it will not turn on with out a wall outlet as a power source, also soon as i remove the wire it shuts off immediately..
i'm downloading lollipop as i'm typing this out, but the problem is it's been plugged into the laptop for about 15 mins or so and it's not turning on so how do i flash lollipop ?

Try holding the power button home button and both volume buttons all at once holding the home button first then the volume keys then finally the power button. If this dont work or your still getting screen flicker open tab up remove battery for 5 mins and plug it back in. YouTube has tutorials
---------- Post added at 09:02 PM ---------- Previous post was at 08:48 PM ----------
And hold them in for up to ten seconds

Did I softbrick?

Hi! I have an LG x Power (posting here because the power doesn't seem to have a forum yet) and when it was booting I held the power button and the two volume buttons down by accident... It turned off and it wont turn back on again even after charging. now here's the wierd part: when I plugged it into my computer to check if I could see what happened, it instead of giving me nothing, downloaded some drivers.

sounds like you might be in some sort of download mode. Have you tried just holding the power button in, like a forced reset

hey buddy in case you still didnt figure this out you have put it in bulk mode but you can hold volume down and power for awhile and it will reboot
---------- Post added at 01:26 AM ---------- Previous post was at 01:23 AM ----------
MVGiC said:
Hi! I have an LG x Power (posting here because the power doesn't seem to have a forum yet) and when it was booting I held the power button and the two volume buttons down by accident... It turned off and it wont turn back on again even after charging. now here's the wierd part: when I plugged it into my computer to check if I could see what happened, it instead of giving me nothing, downloaded some drivers.
Click to expand...
Click to collapse
hold power and volume down for a bit and it will reboot had same thing happen, it is odd but what you discovered is something I mentioned a couple weeks ago that for some reason it goes into qualcomm bulk mode when doing that combo of key presses same thing happens on mine, but sadly I cant see the partitions when it is in that mode like normally wish I could cause then we could maybe send a custom rooted system partition to it but sadly that doesnt work, but you can still run scripts from the download mode on it at least, but so far I havent found one that will actually work for rooting it seems the same restrictions apply in marshmallow as when it is actually booted on the com ports hopefully someone can piece together something from the quad root exploit that we are still vulnerable to on this device to eventually get a root shell.