Develop Bugs

[Q] Turned it off...Won't turn back on.

I did a soft shutdown and now it won't turn on. No response to Vol UP + Vol DOWN + Power. Nothing but black. Its connected to power and was at 80% when I shutdown. USB debugging was enabled. Any hints? Thanks, -RP

ronpandolfi said:
I did a soft shutdown and now it won't turn on. No response to Vol UP + Vol DOWN + Power. Nothing but black. Its connected to power and was at 80% when I shutdown. USB debugging was enabled. Any hints? Thanks, -RP
Click to expand...
Click to collapse
Ugh, I had to hold power button for 30 seconds. Its really excessive. Delete this please. Thanks.

funny thing is the old nexus 7 had the same issues

I received mine today and it wouldn't turn on at all. All I got was a flashing white light after holding the button to turn it on so knowing that the same thing was common on the previous generation N7 I tried the 30 second trick with no success so I figured I'd share my experience.
Turns out my battery was at 0% out of the box. It was so dead I had to do the following to actually get it to start charging unfortunately:
1. Open it, I followed the guide @ ifixit: http://www.ifixit.com/Teardown/Nexus+7+2nd+Generation+Teardown/16072/1
Note: The plastic bezel surrounding the screen is incredibly soft plastic I just learned. Even using plastic pry tools I ended up leaving marks the plastic, despite being extremely careful.
2. Disconnect the battery (follow the guide above)
3. Press the power button and hold down for 10 seconds, but don't release yet.
4. Using the supplied AC adapter, apply the power and continue holding for another 10 seconds.
5. Reconnect the battery while the AC adapter is plugged in​This should get you to the point where you at least see the battery charge icon on the LCD. I waited another 30 minutes before moving on and powering the device on. I intend to leave it charging to 100% before I do anything else with it.

I remember on some older devices I've had when they got into 0% state, they didn't want to take a charge from a high power charger and I needed to switch to 500ma USB 1.1/2.0 slot on PC and let it sit a while before it would trickle in enough charge to get some life.
After that it would take charge from any source again.

joshtheitguy said:
I received mine today and it wouldn't turn on at all. All I got was a flashing white light after holding the button to turn it on so knowing that the same thing was common on the previous generation N7 I tried the 30 second trick with no success so I figured I'd share my experience.
Turns out my battery was at 0% out of the box. It was so dead I had to do the following to actually get it to start charging unfortunately:
1. Open it, I followed the guide @ ifixit: http://www.ifixit.com/Teardown/Nexus+7+2nd+Generation+Teardown/16072/1
Note: The plastic bezel surrounding the screen is incredibly soft plastic I just learned. Even using plastic pry tools I ended up leaving marks the plastic, despite being extremely careful.
2. Disconnect the battery (follow the guide above)
3. Press the power button and hold down for 10 seconds, but don't release yet.
4. Using the supplied AC adapter, apply the power and continue holding for another 10 seconds.
5. Reconnect the battery while the AC adapter is plugged in​This should get you to the point where you at least see the battery charge icon on the LCD. I waited another 30 minutes before moving on and powering the device on. I intend to leave it charging to 100% before I do anything else with it.
Click to expand...
Click to collapse
mine was this dead too I just let it sit on charge for 2 hours and was up and running.

kpa2727 said:
mine was this dead too I just let it sit on charge for 2 hours and was up and running.
Click to expand...
Click to collapse
lol - this happened to me too. Except double whammy - as soon as it was charged enough to turn on, it wanted to do the system update and wasn't charged enough to do that. Back to the USB it went!

Well I got my replacement for the one with the dead pixels, it started up fine and I even configured just to check it had no dead pixels. I had to step away for a few minutes and it was off, completely dead. Tried ever variation of tricks and I get nothing, no white LED, no charge indicator, nothing.
I think I'm sending both the replacement and the original back for a refund, this is just unacceptable at this point.

I bought one but returned it after 3-4 days. Mine was fully powered and I would go through the shutdown procedure. The device would power off. Then I tried to turn it back on. It would not work. I held it down for several variations of time: pushed it quickly, help the power button in for 10 sec, 15 sec, 30 sec... I found that when I connected the device to power through the usb the screen would show 100% charge right away. I would then hit the power button and it would turn on fine. I immediately unplugged the device and everything was fine. i powered it down again and repeated this process 2-3 more times before I said the heck with it. Anyone else know of this issue or did I just have some crazy unit?

[Q] Galaxy S3 Serious Booting Issues

Hey guys,
As of a little while ago, my S3 (running LS 2.37) seemingly decided that it wanted to tap out.
I was about to read a text message and bam, it shuts down completely. Naturally I try to reboot it, nothing happens. I pull the battery for one minute, and put it back in. Without pressing any buttons, the phone simply vibrates, "samsung" pops up on the screen, and then it shuts down again. The buttons are unresponsive.
I then think, if I can get to recovery mode, I can just factory reset my phone. So, I pull the battery out, put it back in, and attempt to get into recovery mode. Once again. the samsung logo pops up, with blue text saying "recovery boot" popping up in the upper left corner. The logo changes to the galaxy s3 logo, then the whole phone shuts off again. Back to square one. I can get into download mode, but after about 5 seconds in it, it shuts off in the same manner.
It does not read the fact that it is plugged into the charger now, and it was at 60% battery when this happened.
Are there any known methods of fixing this?
Help please!

bump

dpowpow said:
Hey guys,
As of a little while ago, my S3 (running LS 2.37) seemingly decided that it wanted to tap out.
I was about to read a text message and bam, it shuts down completely. Naturally I try to reboot it, nothing happens. I pull the battery for one minute, and put it back in. Without pressing any buttons, the phone simply vibrates, "samsung" pops up on the screen, and then it shuts down again. The buttons are unresponsive.
I then think, if I can get to recovery mode, I can just factory reset my phone. So, I pull the battery out, put it back in, and attempt to get into recovery mode. Once again. the samsung logo pops up, with blue text saying "recovery boot" popping up in the upper left corner. The logo changes to the galaxy s3 logo, then the whole phone shuts off again. Back to square one. I can get into download mode, but after about 5 seconds in it, it shuts off in the same manner.
It does not read the fact that it is plugged into the charger now, and it was at 60% battery when this happened.
Are there any known methods of fixing this?
Help please!
Click to expand...
Click to collapse
Sounds like a hardware issue to me. Do you have a warranty on the phone at all?
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app

Di you have a spare battery? Perhaps there is something wrong with the circuit in the battery, if it is like most other L-ION batteries there is a internal circuit and when the battery is below X.xx voltage the cells are disconnected from the output terminals. It would be a simple test. I dont usually advocate the change parts to diagnose method but if you had a spare it would be an easy to diagnose.
alternately you could test it with a digital multi meter on the terminals where they go into the phone (the battery is labeled for polarity) turn the phone on and wait till it turns off see if the battery cut power for some reason.

theramsey3 said:
Di you have a spare battery? Perhaps there is something wrong with the circuit in the battery, if it is like most other L-ION batteries there is a internal circuit and when the battery is below X.xx voltage the cells are disconnected from the output terminals. It would be a simple test. I dont usually advocate the change parts to diagnose method but if you had a spare it would be an easy to diagnose.
alternately you could test it with a digital multi meter on the terminals where they go into the phone (the battery is labeled for polarity) turn the phone on and wait till it turns off see if the battery cut power for some reason.
Click to expand...
Click to collapse
Trying a different battery yielded no results, and I also have a warranty with my carrier (Telus), so I can easily get it replaced.
I was just more surprised than anything by the sudden failure.

bump ? i have the same problem now... running a custom ROM for months... did not install anything new... power button is working fine

[Q] Phone Boots when battery is connected then goes black.

First thing is first, I have been searching here and Google and have not found this exact problem.
I am running cm-11-20140719-NIGHTLY currently
Today my phone turned off on its own while connected to a car charger.
Here is what it is doing.
When the battery is connected the phone turns on and gets to the Samsung logo, then it goes black. No back light, nothing. If I pull the battery and re-insert it, it happens again. Once it goes black none of the buttons seem to be responsive (cannot force a reboot by holding the power button). Once it goes black if I connect it to a charger I get no LED indicating charge level.
If I try to boot into recovery I see the blue text and then it goes black.
If I try to boot into download mode I can get to the triangle screen if I am fast and then it goes black.
If I have a data USB cable connected and I connect the battery the phone does nothing, and will not respond to the power button, again no LED light indicating charge level.
If I have a charge only cable (wall outlet) connected and I connect the battery I see the battery charge icon for about 1 second and then the screen goes black. and the phone will not respond to any buttons.
I have duplicated all these things with 2 batteries both actual Samsung batteries, neither of the batteries is bubbled out at all.
I have tried leaving the battery out for several hours, but this did not help.
I have data on this phone that was not backed up so any suggestions I will try.
Thanks

daemorok said:
First thing is first, I have been searching here and Google and have not found this exact problem.
I am running cm-11-20140719-NIGHTLY currently
Today my phone turned off on its own while connected to a car charger.
Here is what it is doing.
When the battery is connected the phone turns on and gets to the Samsung logo, then it goes black. No back light, nothing. If I pull the battery and re-insert it, it happens again. Once it goes black none of the buttons seem to be responsive (cannot force a reboot by holding the power button). Once it goes black if I connect it to a charger I get no LED indicating charge level.
If I try to boot into recovery I see the blue text and then it goes black.
If I try to boot into download mode I can get to the triangle screen if I am fast and then it goes black.
If I have a data USB cable connected and I connect the battery the phone does nothing, and will not respond to the power button, again no LED light indicating charge level.
If I have a charge only cable (wall outlet) connected and I connect the battery I see the battery charge icon for about 1 second and then the screen goes black. and the phone will not respond to any buttons.
I have duplicated all these things with 2 batteries both actual Samsung batteries, neither of the batteries is bubbled out at all.
I have tried leaving the battery out for several hours, but this did not help.
I have data on this phone that was not backed up so any suggestions I will try.
Thanks
Click to expand...
Click to collapse
Return to stock with Odin to see if the problem goes away. If not, report back and we will go from there.

The Sickness said:
Return to stock with Odin to see if the problem goes away. If not, report back and we will go from there.
Click to expand...
Click to collapse
I would if I could get it into download mode... The screen will not stay on for more than 5 seconds and ODIN never sees the phone.

Here's a thread talking about that issue. I'm afraid it sounds like your display is dead:
http://forum.xda-developers.com/showthread.php?t=2267827
Sent from my SGH-M919 using XDA Premium 4 mobile app

I had this problem before and I was freaking out, but it was just the cord I used when trying to connect it, but yours sounds like an overload problem, maybe from your car charger if it plugs into the car lighter socket. My buddy has a super recharger that hooks into his lighter socket, and while it may charge fast, it might have jolted your phone, or maybe you had it over clocked in your rom? Or was it a recent occurrence or did it happen as soon as you installed the rom? Because this happens on a bad flash sometimes, if your Wi-Fi connection is shaky or far off, you could get a bad download and it will royally harm your time having to mess with it.
Sent from my GT-I9505G using XDA Free mobile app

Android_Monsters said:
Here's a thread talking about that issue. I'm afraid it sounds like your display is dead:
http://forum.xda-developers.com/showthread.php?t=2267827
Sent from my SGH-M919 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
If it was just the screen wouldn't I still be able to get into download mode?

NinjaTale said:
I had this problem before and I was freaking out, but it was just the cord I used when trying to connect it, but yours sounds like an overload problem, maybe from your car charger if it plugs into the car lighter socket. My buddy has a super recharger that hooks into his lighter socket, and while it may charge fast, it might have jolted your phone, or maybe you had it over clocked in your rom? Or was it a recent occurrence or did it happen as soon as you installed the rom? Because this happens on a bad flash sometimes, if your Wi-Fi connection is shaky or far off, you could get a bad download and it will royally harm your time having to mess with it.
Sent from my GT-I9505G using XDA Free mobile app
Click to expand...
Click to collapse
I had flashed the night before and it ran fine all night and all morning, then it just shut down. The car charger I use is not a super charger, but it is also not a Samsung charger. I was not overclocked and my wifi is not shaky usually.
Seems like I am screwed either way.

daemorok said:
First thing is first, I have been searching here and Google and have not found this exact problem.
I am running cm-11-20140719-NIGHTLY currently
Today my phone turned off on its own while connected to a car charger.
Here is what it is doing.
When the battery is connected the phone turns on and gets to the Samsung logo, then it goes black. No back light, nothing. If I pull the battery and re-insert it, it happens again. Once it goes black none of the buttons seem to be responsive (cannot force a reboot by holding the power button). Once it goes black if I connect it to a charger I get no LED indicating charge level.
If I try to boot into recovery I see the blue text and then it goes black.
If I try to boot into download mode I can get to the triangle screen if I am fast and then it goes black.
If I have a data USB cable connected and I connect the battery the phone does nothing, and will not respond to the power button, again no LED light indicating charge level.
If I have a charge only cable (wall outlet) connected and I connect the battery I see the battery charge icon for about 1 second and then the screen goes black. and the phone will not respond to any buttons.
I have duplicated all these things with 2 batteries both actual Samsung batteries, neither of the batteries is bubbled out at all.
I have tried leaving the battery out for several hours, but this did not help.
I have data on this phone that was not backed up so any suggestions I will try.
Thanks
Click to expand...
Click to collapse
This blows, I just had the Same Exact thing happen last night, word for word.
Although I'm on a stock Rom that's rooted.
Phone was in my pocket and it vibrated as it restarted on its own. Pulled it out of my pocket, waited for it to fully start up, then I could use it.
However, it rebooted 2 minutes later and has Never come back yet.
I wish there was some sure fire way to verify if its the screen that went bad or the logic board. The mere fact the screen shows the Galaxy S4 logo, or Download Mode for a few seconds before shutting off seems weird if the screen was in fact bad.... =(

jamesvtw said:
This blows, I just had the Same Exact thing happen last night, word for word.
Although I'm on a stock Rom that's rooted.
Phone was in my pocket and it vibrated as it restarted on its own. Pulled it out of my pocket, waited for it to fully start up, then I could use it.
However, it rebooted 2 minutes later and has Never come back yet.
I wish there was some sure fire way to verify if its the screen that went bad or the logic board. The mere fact the screen shows the Galaxy S4 logo, or Download Mode for a few seconds before shutting off seems weird if the screen was in fact bad.... =(
Click to expand...
Click to collapse
Check your power button, it could be stuck.

serio22 said:
Check your power button, it could be stuck.
Click to expand...
Click to collapse
You were correct! Had to mess with that button a bit to get to work properly, but its still an issue. One to many power button presses and the issue returns.
I have tested the phone without the exterior power button only using the logic board button and it did that same thing. Am I correct to assume that the fault is the actual button on the logic board? So new logic board to fix this? =(

Why so many presses of the power button?
Pp.

LG G4 Just killed itself. Plugged in and no charging screen or charge LED

I put my phone down on the table and left. I came back and pressed the power button and it did nothing. I thought that was weird and held the power button and it didn’t turn back on. I then plugged in the device and still nothing happened. No charging LED or charge screen or anything. It is just black. I took the battery out and held the button for 30 seconds and put it back and plugged it in and nothing. I got out my USB volt meter and noticed that it is drawing power from the charger but the screen isn’t lighting up and the charge LED isn’t lighting up for whatever reason. I put in another battery I had laying around and nothing changed. Is this phone just dead or is there still hope in recovering it. I have no idea why it killed itself for no reason. Any ideas to try that can fix this?

jimmysofat6864 said:
I put my phone down on the table and left. I came back and pressed the power button and it did nothing. I thought that was weird and held the power button and it didn’t turn back on. I then plugged in the device and still nothing happened. No charging LED or charge screen or anything. It is just black. I took the battery out and held the button for 30 seconds and put it back and plugged it in and nothing. I got out my USB volt meter and noticed that it is drawing power from the charger but the screen isn’t lighting up and the charge LED isn’t lighting up for whatever reason. I put in another battery I had laying around and nothing changed. Is this phone just dead or is there still hope in recovering it. I have no idea why it killed itself for no reason. Any ideas to try that can fix this?
Click to expand...
Click to collapse
Connect it to your pc and watch the device manager while doing so. You will likely notice a new device QHSUSB_BULK beneath other devices . If that's the case (99% chance it is) then you got catched by the ilapo ( see my signature for bootloop fix thread for workarounds which MAY work)
Sent from my OnePlus 6T using XDA Labs

My phone died !!! My S7 Active just quit on me for no apparent reason, I can only make it go into ODIN MODE.

For no apparent reason my phone just froze, I restarted it and got a black screen, pressed volume down, power and home and it goes into ODIN MODE, the light blue screen, where it says DOWNLOADING, and nothing happens, if I press cancel in the previous screen it foes into "recovery booting..." and nothing then goes black, has it really died ???

What condition is the battery in?

blackhawk said:
What condition is the battery in?
Click to expand...
Click to collapse
not good, it was lasting like half of a day under regular use, was charging twice a day most of the time, the phone was in 50% when it died, what I'm really angry about is the fact that I have taken care of this phone soo so much, no falls, good case, etc... but I guess it finally quit on me ?? Could there be a program to make it boot ? or wipe it or something ??

If the battery failed it likely won't have enough current to boot even with the charger.
Once an Li battery is degraded it is more likely to fail. A swollen battery is a failure.
Replace battery, make sure it's charging and go from there. While replacing the battery check for loose connectors. Give it a good look over.
Then see what you got. Bonus, replacing the battery gives you a hard reboot... if it boots.

blackhawk said:
If the battery failed it likely won't have enough current to boot even with the charger.
Once an Li battery is degraded it is more likely to fail. A swollen battery is a failure.
Replace battery, make sure it's charging and go from there. While replacing the battery check for loose connectors. Give it a good look over.
Then see what you got. Bonus, replacing the battery gives you a hard reboot... if it boots.
Click to expand...
Click to collapse
thnx but I think it's not the battery it was at 50% when it died, I opened up spotify and it froze, I waited and then nothing it was totally frozen, so I did a hard reboot by pressing the volume power home keys and then nothing, it won't star anymore, but it still goes into download mode, if it was a bettery problem it wouldnt even start into download mode, it hink
+.-

hudtwalcker said:
thnx but I think it's not the battery it was at 50% when it died, I opened up spotify and it froze, I waited and then nothing it was totally frozen, so I did a hard reboot by pressing the volume power home keys and then nothing, it won't star anymore, but it still goes into download mode, if it was a bettery problem it wouldnt even start into download mode, it hink
+.-
Click to expand...
Click to collapse
Download mode uses less power. It takes substantially more power to boot... lots of apks loading and system activity.
Try it with the charger connected after leaving it charge for 3 hours. Does the battery get warm while charging?

blackhawk said:
Download mode uses less power. It takes substantially more power to boot... lots of apks loading and system activity.
Try it with the charger connected after leaving it charge for 3 hours. Does the battery get warm while charging?
Click to expand...
Click to collapse
I will try that thnk you

blackhawk said:
Download mode uses less power. It takes substantially more power to boot... lots of apks loading and system activity.
Try it with the charger connected after leaving it charge for 3 hours. Does the battery get warm while charging?
Click to expand...
Click to collapse
Well yesterday it finally started booting up, but then shuts down, it takes reallly long for the Samsung s7 logo to come up, sometimes the att&t logo appears, sometimes it doesn't, then it "shuts down" but the blue light on the top left stays on always, today the light finally died (I'm guessing the battery finally died) so I started charging it and the changing animation appeared !!! but then after a while, gone and now I got a red light on the top corner that wont turn off, well I got myself a brand new Galaxy a52s 5g, I guess my hand was forced, but I would still like to recover this phone, do you still think it's the battery ?

hudtwalcker said:
Well yesterday it finally started booting up, but then shuts down, it takes reallly long for the Samsung s7 logo to come up, sometimes the att&t logo appears, sometimes it doesn't, then it "shuts down" but the blue light on the top left stays on always, today the light finally died (I'm guessing the battery finally died) so I started charging it and the changing animation appeared !!! but then after a while, gone and now I got a red light on the top corner that wont turn off, well I got myself a brand new Galaxy a52s 5g, I guess my hand was forced, but I would still like to recover this phone, do you still think it's the battery ?
Click to expand...
Click to collapse
I don't know. May be a hardware failure. Take it apart, examine for loose connectors, replace battery and go from there.
A reflash may fix it if that doesn't work. Parts are cheap for this phone now as are used ones. As long it's supported by your carrier as 4G VoLTE*. AT&T makes the switch this Feb 22, 2022.
I have a S4+ that's not in use, I always liked the S7+. However my next upgrade was the N10+ as I had always liked the Note series. I jumped 5 years... talk about future shock
The battery in the S4+ has a removable rear cover secured by a cam screw. It is a LCD display vs the S7+'s AMOLED display and harder to remove battery. The good news is since it's not an LCD you can use anhydrous isopropyl alcohol to aid safely in disassembly without worrying about poisoning the display.
*it is supported, see attachment below