[Q] Nexus 4 turned off by itself?! - Nexus 4 Q&A, Help & Troubleshooting

Hey everyone!
I recently left Samsung and decided to try out Nexus 4. I actually planned to test it out so I kept the plastics on the charger and everything, and left everything in the box because I want to sell it for the Nexus 5. Anyways, I've used it for exactly a week now and it's been working just fine, but last night was the second time I left it charging overnight. Since I kept all of its stuff in the box, I use the charger from my Nexus 7 to charge it. It's been working fine so far, but today I woke up from my alarm, took my phone off charge and it worked perfectly. I went back to sleep with the phone beside me and when I woke up, it wouldn't turn on. Anyways, I got really worried and eventually it safe booted when I pressed power + vol. down. I pressed "Start" and now it's up and running but when it powered back on, it showed 85% battery instead of 100% considering it was on charge for about 8 hours. I know this isn't because of battery hibernation because I put it on charge while it was at about 4% I believe. I've looked around everywhere online and I can find people with similar problems but all of them have something like the phone going into hibernation or such. But Mine did not do anything like that. Can anyone please explain why this happened? The phone still has warranty but I really can't afford to go without a phone for 3 weeks if I send it in. Thanks so much!!!
P.S. It's running the latest KitKat, I've never rooted it, flashed it or anything like that. I am running the Google Experience Launcher.
Edit: I read that Nexus 7 chargers use 0.8 more current that the Nexus 4 chargers. Can that be the case? Thanks again guys!

tashad said:
Hey everyone!
I recently left Samsung and decided to try out Nexus 4. I actually planned to test it out so I kept the plastics on the charger and everything, and left everything in the box because I want to sell it for the Nexus 5. Anyways, I've used it for exactly a week now and it's been working just fine, but last night was the second time I left it charging overnight. Since I kept all of its stuff in the box, I use the charger from my Nexus 7 to charge it. It's been working fine so far, but today I woke up from my alarm, took my phone off charge and it worked perfectly. I went back to sleep with the phone beside me and when I woke up, it wouldn't turn on. Anyways, I got really worried and eventually it safe booted when I pressed power + vol. down. I pressed "Start" and now it's up and running but when it powered back on, it showed 85% battery instead of 100% considering it was on charge for about 8 hours. I know this isn't because of battery hibernation because I put it on charge while it was at about 4% I believe. I've looked around everywhere online and I can find people with similar problems but all of them have something like the phone going into hibernation or such. But Mine did not do anything like that. Can anyone please explain why this happened? The phone still has warranty but I really can't afford to go without a phone for 3 weeks if I send it in. Thanks so much!!!
P.S. It's running the latest KitKat, I've never rooted it, flashed it or anything like that. I am running the Google Experience Launcher.
Edit: I read that Nexus 7 chargers use 0.8 more current that the Nexus 4 chargers. Can that be the case? Thanks again guys!
Click to expand...
Click to collapse
Charger could be one problem. It's better to use the stock one.
What you had there was a BSOD ( black screen of death). Basically, the cpu gets stuck when trying to sleep. Software issue. Battery consumption is higher. Plus a reboot may have taken some more battery.

abaaaabbbb63 said:
Charger could be one problem. It's better to use the stock one.
What you had there was a BSOD ( black screen of death). Basically, the cpu gets stuck when trying to sleep. Software issue. Battery consumption is higher. Plus a reboot may have taken some more battery.
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Click to collapse
Phew! Thanks!! I was so worried that this was a hardware issue! I am a developer so I was testing out a tetris app yesterday, that can be probably cause I guess. Or maybe that just happens to the CPU sometimes. I've never done anything to overload it or anything but maybe it was working too hard to control all that extra power it was getting from that Nexus 7 charger. But that makes alot more sense! I was really worried because I baby all of my electronics and I would hate to have to send my phone into Google or for anything to be wrong with it. Software issues can all be fixed with a factory reset right? Thank you so much! I was extremely paranoid! Thanks!

tashad said:
Phew! Thanks!! I was so worried that this was a hardware issue! I am a developer so I was testing out a tetris app yesterday, that can be probably cause I guess. Or maybe that just happens to the CPU sometimes. I've never done anything to overload it or anything but maybe it was working too hard to control all that extra power it was getting from that Nexus 7 charger. But that makes alot more sense! I was really worried because I baby all of my electronics and I would hate to have to send my phone into Google or for anything to be wrong with it. Software issues can all be fixed with a factory reset right? Thank you so much! I was extremely paranoid! Thanks!
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Click to collapse
Hi i can buy lg nexus 4 8gb, problem with phone is is itself reboot even in hboot recovery etc.
seller say:
"Phone stopped working after updating to the latest software, its gone into sleep mode does not switch on. Recovery mode turns it on but on most occasions turns of after a minute."
Is software issue or hardware ??
Regards

Related

Nexus 7 keeps turning off at random intervals

This has been going on for about a week or so.
At first I kept finding it off in the morning after charging, and then it became more common. Mostly happens when the screen is off but not always, I've had it turn off twice whilst I'm using it for example. A couple of times it has needed a long press to restart it before it will turn back on. Right now it has turned itself off and will not turn back on.
Battery has never fallen below about 50% throughout so it cant be that. It doesn't get heavy use so I'm not convinced its overheating. I had a look through the app list and none of them seem to be obvious candidates for the problem, and if i cant get the thing to turn back on I cant even test that.
I think this one is going back to HMV asap but I was wondering if anyone has any ideas for me to avoid the problem with its replacement, or if anyone is having the same problem. Its a shame as I've been really enjoying my Nexus.
Clem
clem2k3 said:
This has been going on for about a week or so.
At first I kept finding it off in the morning after charging, and then it became more common. Mostly happens when the screen is off but not always, I've had it turn off twice whilst I'm using it for example. A couple of times it has needed a long press to restart it before it will turn back on. Right now it has turned itself off and will not turn back on.
Battery has never fallen below about 50% throughout so it cant be that. It doesn't get heavy use so I'm not convinced its overheating. I had a look through the app list and none of them seem to be obvious candidates for the problem, and if i cant get the thing to turn back on I cant even test that.
I think this one is going back to HMV asap but I was wondering if anyone has any ideas for me to avoid the problem with its replacement, or if anyone is having the same problem. Its a shame as I've been really enjoying my Nexus.
Clem
Click to expand...
Click to collapse
Hi, I had the exact same problem and ordered a replacement from the play store. I never found a way to fix it, I would recommend you just get a new one from HMV. I hope this helps
This actually just started happening to me yesterday on my 3 day old 16GB Nexus 7. I kept mine plugged into the AC all weekend, and yesterday watched it shut down itself once. Thought it was a fluke and just turned it back on...left it running overnight...pick it up this morning and it's turned itself off yet again. I guess I'll have to return this one before it completely doesn't turn on anymore!
Bah. Thought that might be the case.
2 days off charge (and some time on charge) and mine still wont turn on.
Definitely going back for replacement.
Elsydeon, it sounds like you should do the same. Took about 4 or 5 days to go from irregular to brick.
I seem to be getting the same thing... Once every day or two I pick up my Nexus and the screen won't turn on, I hold the power button and it starts booting up. I haven't had this while charging (maybe because the screen is on while charging??)
For those of you who traded in for a replacement, did this solve the issue for you?
I was getting this, but was using one of those magnetic cover/cases. If I wrap the cover round the back of the N7 whilst using it, the magnet in the case/cover is sometimes strong enough to turn the device off from the back!
Mine has powered off twice now
clem2k3 said:
This has been going on for about a week or so.
At first I kept finding it off in the morning after charging, and then it became more common. Mostly happens when the screen is off but not always, I've had it turn off twice whilst I'm using it for example. A couple of times it has needed a long press to restart it before it will turn back on. Right now it has turned itself off and will not turn back on.
Battery has never fallen below about 50% throughout so it cant be that. It doesn't get heavy use so I'm not convinced its overheating. I had a look through the app list and none of them seem to be obvious candidates for the problem, and if i cant get the thing to turn back on I cant even test that.
I think this one is going back to HMV asap but I was wondering if anyone has any ideas for me to avoid the problem with its replacement, or if anyone is having the same problem. Its a shame as I've been really enjoying my Nexus.
Clem
Click to expand...
Click to collapse
Just wondering as well like the last guy if swapping for a new one helped this issue.
I actually have looked at the battery data and think somewhere the nexus has gotten a power spike that turns it off but not sure if that definitely is the issue.
If it is, perhaps it's where we are plugging in or a failure with the AC plug?
Ideas? I've attached a photo. I hope it uploaded.
Thanks.
nyhunter77 said:
Just wondering as well like the last guy if swapping for a new one helped this issue.
I actually have looked at the battery data and think somewhere the nexus has gotten a power spike that turns it off but not sure if that definitely is the issue.
If it is, perhaps it's where we are plugging in or a failure with the AC plug?
Ideas? I've attached a photo. I hope it uploaded.
Thanks.
Click to expand...
Click to collapse
I have exactly the same issue, taking it back to pcworld.
Ian Morrison
HTC OneX, G-Tablet www.smokecig.co.uk
Me too
unless i hear different from anyone here, going to exchange it for a new one today ... only been 2 weeks from Staples.
Actually going through the data, it's happend the last 3 days now.
I wake up to the white battery symbol.
By the way, for future ref, is bootloading warranty killing? I am in the process or restoring now just in case.
Thinking of getting their replacement plan now too because of this episode.
Thank goodness for titanium backup
Nexus 7 32GB Display Keep Turning Off
My Nexus 7 32GB tablet's display continues to turn off at random times also. It happens while I'm watching a video in landscape. But then I stop the video, go to the home screen, and it still turns off. I already replaced one last week and now its happening to my new one. Anyone got answers? I'm going to call google device support today. Maybe if enough people call, they'll do something about it. Their # is 888-836-3987.
Still happens
Otoniel76 said:
My Nexus 7 32GB tablet's display continues to turn off at random times also. It happens while I'm watching a video in landscape. But then I stop the video, go to the home screen, and it still turns off. I already replaced one last week and now its happening to my new one. Anyone got answers? I'm going to call google device support today. Maybe if enough people call, they'll do something about it. Their # is 888-836-3987.
Click to expand...
Click to collapse
My NEW 32 tab worked out fine for a night and woke up today to the full battery indicator and tablet off again.
I have a new insight though, somehow the battery temp is rocketing to 100 and I'm guessing that is when it shuts off.
It may be because I am using SetCPU to limit my CPU speed to 300mhz when the screen is off. Maybe the tablet is trying to update all my apps while I am sleeping? It shouldn't use so much power though.
I'm going to try to create a new command to let it use it's whole CPU as long as it's on AC and screen off and see what happens tonight.
Happened overnight again. No insights? Does anyone think my nexus will finally brick sometime?
I don't know anyway of testing what is up with this thing? Thanks.
Nexus 7 Screen Keeps shutting off - Fixed
To those experiencing issues with their Nexus 7 screen randomly shutting off.
I just received one for Christmas, and thought this dang thing sucks. The screen would stay off and only show for half a second when I click the lock button to turn it back on.
The issue what the case. The the case, when folding back, contains a small piece of metal on the click. This little connection, thought not direct, causes the screen to shut off. I've tested it out multiple times just to make sure.
Again the FIX is, keep metal away from the back of the nexus, it doesn't like anything that can cause a magnetic field. Even if the metal is enclosed by something.
nexus 7 screen turns off
For those of you who are experiencing intermittent screen display going to sleep mode or turning off you can fix it by removing your tablet cover. Some third party tablets come with different strength magnets stitched inside the cover. The magnet is used to activate the nexus tablet smart cover functionality. If you flip the cover to the back of the tablet the magnetic field may cause the tablet to think it should turn off while in use. Get rid of your cover reboot your tablet and notice that the screen will stop turning off. Hope this helps.
Hi, I also had similar problems with my Nexus 7. After removing the back of the unit, I saw that the battery was nearly unplugged. I simply popped the connector in and voila! no more SOD, turning off, nothing.
So, the Nexus was probably turning itself off because there was randomly no more power comming from the battery.
Here's a link on how to remove the back shell : http://www.ifixit.com/Teardown/Nexus+7+Teardown/9623/1
Look at Step 4.
That Fixed It!
StefGou said:
Hi, I also had similar problems with my Nexus 7. After removing the back of the unit, I saw that the battery was nearly unplugged. I simply popped the connector in and voila! no more SOD, turning off, nothing.
So, the Nexus was probably turning itself off because there was randomly no more power comming from the battery.
Click to expand...
Click to collapse
I was researching before going to get my Nexus 7 replaced today as it also started having this issue. After reading your post, I took your advice and removed the back to find that my battery connection was also barely intact! Thus it would lose power any time it was bumped slightly to that side. Now that the connection is securely in place, I've had no more problems!! Thanks to you StefGou!!!
Hey guys. A few hours ago I encountered the same said problem. I woke up to find the battery was depleted so I charged it. It turned on by itself and stated that I have 6% battery left. As I wait, suddenly the screen was like distorted and give me static sound then shut off. Numerous trials later end up the same. So I just put on the charger thinking to let the battery full. To my surprise, there was no indicator that my N7 is charging. I just leave it charging and left. About an hour I got back it still nit charging. I boot the N7 and it still on 6% battery. So I followed you guys handsomely instructions to remove the 3rd party cover and now my N7 is back. Thanks guys. But I wonder why it is happening now? I've been using the cover since forever.

Dead nexus 4, is there anything I can do?

So I woke up this morning and went to charge my nexus 4, which had around a week of life, only to be greeted with a flashing red light on its LED. It was working perfectly fine up until now, but now it doesn't turn on, it doesn't do anything if I try a hard reset (power + volume down) and charging it with via USB or AC only shows the red flashing LED, with no charging icon at all.
I have absolutely no idea why did it decide to spontaneously die, it didn't even leave the house yet because I was too paranoid I would drop it Is there anything I can do? Any ideas? It looks like getting a replacement is my only option but I wanted to ask you guys if by any chance there's anything else I could try.
have you rooted it or flash anything into it? Overclocking it or something? what have you done to it in the period of a "week"?
Nevermind, I managed to boot into recovery mode after pressing vol.down+power for about 40 secs while plugged to AC. It looks like the battery depleted completely and that was causing the red led — why did the battery go down to 0 while the phone was off is completely beyond me though. (FWIW I did not root the device, didn't flash anything, and didn't overclock it)
I had the same thing happen to be just now. Yesterday my battery died at 2% so I shut it off. I didn't charge it that night. Today I went to plug it in and I got a red flashing led. However after about 3-5 minutes of the charger the regular white charging battery symbol came up on the screen. I think the battery was just really dead.
i got my n4 today, had an gnex before
so i unlocked my phone, rooted and installed cwm
i flashed xylon rom and trinity kernel any 10, and everything was fine, like it was on my gnexus
after a couple of hours i pressed the power button to unlock the screen but nothing happend.
phone seems to be dead, pressing power button for 10 seconds do nothing
when i plug it into charger, the led is blinking red all the time, but phone wont turn on
do you think the device is broken?
i am really ****ed up, now wtf is the quality of that?
used it for 3 hours and its broken?
any idea is welcome..(
Nexus 4 DEAD... possibly not charging.
I have this exact same issue... but trying the volume down+power key or trying the power key by itself does not do a thing. The phone will only turn on for a couple of seconds and then die. I have been trying to charge it for a couple of days now with no luch.
I am overseas and just got my phone, which was thoroughly tested by my brother in the US, but it has been off the charger for a couple of weeks until it got to my hands... Is there any reset button or anything else that I can do if I open it???
Please, sending it back will be a major hassle, thank you.
As long as you are properly charging from a source that can provide at least 1.2A, you should be able to charge the phone back up.
Make sure you're not using an Apple charger, charging from a computer, or charging with a wall adapter that is rated below 1.2A.
pa.pn2 said:
i got my n4 today, had an gnex before
so i unlocked my phone, rooted and installed cwm
i flashed xylon rom and trinity kernel any 10, and everything was fine, like it was on my gnexus
after a couple of hours i pressed the power button to unlock the screen but nothing happend.
phone seems to be dead, pressing power button for 10 seconds do nothing
when i plug it into charger, the led is blinking red all the time, but phone wont turn on
do you think the device is broken?
i am really ****ed up, now wtf is the quality of that?
used it for 3 hours and its broken?
any idea is welcome..(
Click to expand...
Click to collapse
Perhaps a kernel related problem? Phone is still very new, devs might have to sort out some shady stuff going on. There will and can always be a certain danger when flashing custom kernels, especially with a device that new.
This just happened to me right when I was demo'ing the 8GB to a buyer since I'm selling it back as I was able to order a 16GB on the last re-offering from Google, (so I don't need two Nexus phones). Hands were sweating when it wouldn't power on, so I grabbed my charger, plugged it in, and then it started flashing a red light. Eventually it turned on after about 5 mins, finally. Battery graph showed 90% charge before it turned off, then 0%, then started back now at 10% charge. This was after powering it off and leaving it in the box since only Tuesday.
Really strange issue... I actually remember something similar happening to my Mom's HP Touchpad a few months back as well. Had to plug it in for about 40 mins after she apparently turned it off and let it sit for a couple weeks during which time it discharged completely. Guess this is the bad part about non-removable batteries lol. Though my iPod touch 2G does sit here with next to no charge and it always powers on without fail.
Happened to me just a few minutes ago, luckily got it turning on again. Weird.
Im using franco kernel and now im scared thanks to this thread...
Which version you have? 8Gb or 16Gb? 14 nov or 14 dec?
Overdose1986 said:
Im using franco kernel and now im scared thanks to this thread...
Which version you have? 8Gb or 16Gb? 14 nov or 14 dec?
Click to expand...
Click to collapse
16GB, Nov 14.
I have the same problem i call the Google support and i became a brand new device.
It's okay but the Christmas holidays are the big problem dammit i must wait
Somewhat a similar situation..and its 2 days ... Phone not turning on ((
XX-RAZOR-XX said:
Somewhat a similar situation..and its 2 days ... Phone not turning on ((
Click to expand...
Click to collapse
call google for an rma
i did it on monday, new device arrived friday evening. really nice support from google...
pa.pn2 said:
call google for an rma
i did it on monday, new device arrived friday evening. really nice support from google...
Click to expand...
Click to collapse
Rma not possible.... .... Purchased this from google USA to india..and it already passed 15 day grace.....
lewis_saint said:
I have a Blue Angel device.
Thanks for your reply,
Lewis
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Click to collapse
That sucks... Several people have reported that their phones started to work again just by doing nothing. I hope you somehow manage to bring it to life.
Sent from my Nexus 4 using Tapatalk 2
Same issue here.
I didn't fina a solution. I've kept the phone connected to the charger for a wole night but it's not booting anymore. I'b only able to enter in fastboot mode pressing vol down + power and connecting it to PC.
L.
This happened to me about 3 days ago while running Antutu with franco kernel r19
My phone completely depleted its battery all the way from 98%. I was able to recover it by connecting my charger for 3 mins and powering on the device with the charger connected. I let it charge for about 10 mins(It refused to charge above 3%).
So i disconnected the charger and restarted the phone. Lo and behold, my battery was back to 98%..
I have been reading lots of threads and i don't seem to be the only one that experienced this issue while running Antutu. Although i have run Antutu multiple times after restart and the problem has not replicated itself..
At first i thought Franco kernel was the culprit but this also happened to people who were completely stock..Leads me to believe that this could be a hardware issue...Lg and Google better figure out what is going on because this could lead to bad publicity and furthermore push people who are currently on the fence regarding a purchase of this device further away.
I have the same issue since this Monday. I still cannot power it on or access fastboot mode.
It happened after I updated to Franco R20 from R19. I still run stock and never OC'ed.
How can I unroot and lock the phone without being able to access fastboot or bootloader?
darll said:
This happened to me about 3 days ago while running Antutu with franco kernel r19
My phone completely depleted its battery all the way from 98%. I was able to recover it by connecting my charger for 3 mins and powering on the device with the charger connected. I let it charge for about 10 mins(It refused to charge above 3%).
So i disconnected the charger and restarted the phone. Lo and behold, my battery was back to 98%..
I have been reading lots of threads and i don't seem to be the only one that experienced this issue while running Antutu. Although i have run Antutu multiple times after restart and the problem has not replicated itself..
At first i thought Franco kernel was the culprit but this also happened to people who were completely stock..Leads me to believe that this could be a hardware issue...Lg and Google better figure out what is going on because this could lead to bad publicity and furthermore push people who are currently on the fence regarding a purchase of this device further away.
Click to expand...
Click to collapse

Battery drain while tablet is turned OFF

I was using my Nexus 7 til it hit about 15% and the battery alert came out. I turned it off, plugged into the charger and left it there overnight. The following night I took it out of my pouch only to realise that its very warm. I had to press on the power button for a good 10 seconds before it turned on, and when it booted up the battery had only 5% remaining, even though it was fully charged (I checked to make sure it was 100%) and was left OFF the entire day.
I encountered this before but thought I solved the issue after wiping the device and flashing CleanROM 3.0 without any custom kernels or tweaks. Looks like the issue is back, any idea what might be wrong? I hope it has nothing to do with the physical battery itself because that would be a pain. Other than this, the day to day battery life of the tablet and stability is pretty good.
BUMP
No one really? Im sure there are people who experienced this before.
My wife's phone does something very similar. Crashes, heats up and when she gets it back on the battery has taken an absolute hammering. Luckily it occurs only rarely and it appears that there are no long term consequences.
Cheers Danny
toidimaet said:
My wife's phone does something very similar. Crashes, heats up and when she gets it back on the battery has taken an absolute hammering. Luckily it occurs only rarely and it appears that there are no long term consequences.
Cheers Danny
Click to expand...
Click to collapse
What phone is she using? Is it rooted?
Anyway I think i figured out why, i happened to notice it by chance. After full charge, i plug it out and notice the screen is actually turned on even though the device isnt! The screen is just showing a plain blank screen, but you can tell its turned on, by looking at an angle. I had to manually force a shut down by holding the power button before it goes off, then the tablet automatically switches on. It seems that it only happens when i charge the tablet while its switched off, I wonder if it has anything to do with the bootloader (Im on 4.2.1) or the charger itself.
Galaxy s2 rooted, does not appear to be rom or kernel specific as it occurs with different combinations. Anyway good news you have at least identified the problem.
Cheers Danny
Sounds like it never charged. Why turn it off to charge it? Airplane mode is just as good.
toidimaet said:
Galaxy s2 rooted, does not appear to be rom or kernel specific as it occurs with different combinations. Anyway good news you have at least identified the problem.
Cheers Danny
Click to expand...
Click to collapse
If thats the case have you tried re-calibrating the battery? Sounds like its pretty messed up, thats what i'd do.
jefferson9 said:
Sounds like it never charged. Why turn it off to charge it? Airplane mode is just as good.
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Click to collapse
It did charge because when i turned it back on it showed as 95%, the first 5% was drained because the screen was left "on" the whole time. I am beginning to suspect it is the case I use with the tablet. Its similar to those smart cases on the iPad where the screen auto ons/off when you flip or close the cover. I notice that even during the process of shutting the tablet down the flap still affects the screen off/on when i close it. A potential way of screwing up stuff. Next time I charge it turned off, I'll try removing the case entirely and see what happens.
Alright this time I turned the tablet off and left it to charge over night WITHOUT the casing and now it's working fine. No screen on or any heat whatsoever.
Sent from my non-Apple device via XDA App
cr0wnest said:
Alright this time I turned the tablet off and left it to charge over night WITHOUT the casing and now it's working fine. No screen on or any heat whatsoever.
Sent from my non-Apple device via XDA App
Click to expand...
Click to collapse
Why are you turning it off to charge? Just plug it in and be done with it. I never turn any of my devices off - the only time my S2 has been off is to reboot to flash a new ROM. Never have any charging issues.
T
Sent from my Nexus 7 using Tapatalk 2
tedkunich said:
Why are you turning it off to charge? Just plug it in and be done with it. I never turn any of my devices off - the only time my S2 has been off is to reboot to flash a new ROM. Never have any charging issues.
T
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Its just a habit i guess, and i always have the mentality that it makes a difference charging it while off
And its also good to reboot your phone once in a while, I usually do it once every 24 hours of use. Y'know, to flush out the RAM and OS so it can start anew. :highfive:

[Q] LG G2 D800 Help needed. possibly bricked. yes really..bricked

So yesterday my phone worked great. I work outside for the most part. It rained its ass off. Phone did not get wet that im aware of. no water drops or anything on it. Had it inside my waterproof jacket. This was early morning..10am or so. I get home from work around 7pm. Phone still works. battery is getting very low though. At 8pm phone reboots..which it randomly does sometimes. I set it down, come back to it awhile later and realize it never came back on. Figured the battery was completely drained past 5%. plugged it into stock charger (not stock cable though but a highend cable still). Phone wouldnt boot up or power on or even show any signs of life. Tried other cables, charges, USB ports on computer, even car charger. Nothing. Set it on charge over night. Still not even a LED blink. Set it on car charger all day while at work. Not even a blink. I took it apart (taken many phones apart in my time haha) disconnected battery and plugged it in...nothing. tried power/volume down, power/volume up, all 3 buttons. held all button combos for over a minute. Still nothing at all. I have a new battery on order that I can slap in there and see if the battery is just completely shot but does anyone else have any ideas on what i can do to get it up and running again? Already had to buy a new phone G3! because i HAVe to have one for work. So i want to get this one working again so i have a backup in case this ever happens again.
Thanks for any and all help
Have you tried to enter download mode?
souldreamer2014 said:
Have you tried to enter download mode?
Click to expand...
Click to collapse
tried to enter download mode, recovery mode, every mode i know of. with no luck.
and forgot to mention. when plugged into computer the computer does not notice anything has been plugged in at all. no sound at all. nothing under device manager
well i got the new battery in. didnt work. still no power at all. anyone else know of something i can try? i know the screen isnt dead because it would still give out sound when turned on or vibrate. but that doesnt happen either. is there some other thing i could test? how would i test the motherboard? power button?
This sounds like exactly what happened to my phone about two weeks ago. Phone was randomly rebooting one morning in strange intervals. Once or twice an hour at first, then more often as the day progressed. By the end of the day the phone wouldn't even turn on anymore. I had thought it was the battery as well but after bringing in to an electronics repair shop, it was diagnosed as a bad motherboard and the guy quoted me $130 to replace it. Considering you can buy the D800 off contract brand new for about $220 off the internet, I declined. I'm still really upset about it. I had already had it replaced by AT&T while it was under warranty. However, now my warranty has expired. I really liked the phone overall but now I'm not so sure I trust LG's hardware.
I'm using my brother's old iphone 4 now and it drives me flippin' crazy. I want to get a new phone as soon as possible but I don't know what to get. I'm so torn on the whole issue. Was thinking about the S6 but I've had bad luck with samsung in the past as well. I'd get a newer iphone but ios is so lame compared to Android. I hope you find a better solution than I did. :crying:
Download mode and rom flash?
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Interesting Boot-Up Issue - Please Help!!! I Don't Know What Else To Try!!!

Everyone, please help me. I don't know what else to do. I am desperate here!!!
So, I've had my Galaxy Note 4 since the day they came out (October 24th, 2014), and I baby my phone.
Anyway, I've never dropped it, got it wet - nothing.
Last week, out of nowhere (I don't recall downloading anything out of the ordinary), my phone started getting extremely sluggish. I wiped the cache partition, but that didn't solve my issues.
Then, the phone was shutting down (abruptly, not powering down) out of nowhere. So, I pulled the battery, and did so many other recommended things.
Now, I cannot turn on my phone without first pulling the battery. Every so often, the phone shuts down (abruptly) and I have to pull the battery to start it up again.
I've changed batteries to back to my original battery, but that didn't help.
Then, every so often a screen comes on with the Android character saying, "Downloading. Do Not Turn Off Target !!"
Please help me!!! What can I do? What should I do?
I love this phone and it's gonna be a long time before the Galaxy Note 8 comes out!
Dankees said:
Everyone, please help me. I don't know what else to do. I am desperate here!!!
So, I've had my Galaxy Note 4 since the day they came out (October 24th, 2014), and I baby my phone.
Anyway, I've never dropped it, got it wet - nothing.
Last week, out of nowhere (I don't recall downloading anything out of the ordinary), my phone started getting extremely sluggish. I wiped the cache partition, but that didn't solve my issues.
Then, the phone was shutting down (abruptly, not powering down) out of nowhere. So, I pulled the battery, and did so many other recommended things.
Now, I cannot turn on my phone without first pulling the battery. Every so often, the phone shuts down (abruptly) and I have to pull the battery to start it up again.
I've changed batteries to back to my original battery, but that didn't help.
Then, every so often a screen comes on with the Android character saying, "Downloading. Do Not Turn Off Target !!"
Please help me!!! What can I do? What should I do?
I love this phone and it's gonna be a long time before the Galaxy Note 8 comes out!
Click to expand...
Click to collapse
Could be a faulty battery because the symptoms sounds similar to mine.
What happened to me was :
Phone would shut down randomly and would only switch on when plugged and charging.
Phone would shut down randomly and would only switch on after pulling out the battery.
Phone would randomly reboot.
Phone would discharge at a very quick pace. 20% for 5-20 minutes of usage.
Phone would only switch on when plugged into a power source but would bootloop when unplugged, even at 100%.
I managed to remedy the situation by buying a new battery. Although you did mentioned that you replaced it with the original battery, I suspect that there might be some sort of batch issue or something when it comes to the Note 4 battery. This current battery that I'm using is the third battery I bought for my Note 4 (because Samsung did not honour their warranty) and the only one that did not came from a Samsung authorised dealer and so far the issues seems to be gone. My phone stopped shutting down randomly and now I'm able to get 4 hour SOT with 12 hours of battery. Not that I'm suggesting you to get a fake battery but it's worth a try to see that it's not a motherboard issue.
My first two battery that came from Samsung and an authorised dealer both had issues within one year respectively and if you bring it to Samsung they will claim it's a motherboard issue and will charge you a few hundreds for a replacement so a new battery is worth a try.
So, I replaced my OEM battery with an Anker battery over a year ago. When this issue started, I put the OEM battery back in. The same issues occurred and the battery drained faster, so I put the Anker one back in.
Did adding a new battery fix your issues? It seems like you might have had the same issues as me.
Did that boot screen with the big Android guy come up on your phone as well?
Did you do a factory reset upon loading the new battery in?
I really love this phone, as you do, and I really want it to work and last!
Dankees said:
So, I replaced my OEM battery with an Anker battery over a year ago. When this issue started, I put the OEM battery back in. The same issues occurred and the battery drained faster, so I put the Anker one back in.
Did adding a new battery fix your issues? It seems like you might have had the same issues as me.
Did that boot screen with the big Android guy come up on your phone as well?
Did you do a factory reset upon loading the new battery in?
I really love this phone, as you do, and I really want it to work and last!
Click to expand...
Click to collapse
Hi there,
I had exact the same problems. I think it is your flashmemory that is causing the problem. When the phone suddenly reboots into downloadmode you normally will see an error message in red saying "emmc read failure". This is your flashmemory. I ordered a new motherboard via alieexpress and replaced it myself, which is not difficult. You can find tutorial on youtube.
My phone is working perfect now.
Dankees said:
Everyone, please help me. I don't know what else to do. I am desperate here!!!
So, I've had my Galaxy Note 4 since the day they came out (October 24th, 2014), and I baby my phone.
Anyway, I've never dropped it, got it wet - nothing.
Last week, out of nowhere (I don't recall downloading anything out of the ordinary), my phone started getting extremely sluggish. I wiped the cache partition, but that didn't solve my issues.
Then, the phone was shutting down (abruptly, not powering down) out of nowhere. So, I pulled the battery, and did so many other recommended things.
Now, I cannot turn on my phone without first pulling the battery. Every so often, the phone shuts down (abruptly) and I have to pull the battery to start it up again.
I've changed batteries to back to my original battery, but that didn't help.
Then, every so often a screen comes on with the Android character saying, "Downloading. Do Not Turn Off Target !!"
Please help me!!! What can I do? What should I do?
I love this phone and it's gonna be a long time before the Galaxy Note 8 comes out!
Click to expand...
Click to collapse
Same issue here, started over a week ago, I have tried so many things, no results, you can't do anything, just gotta change the motherboard.
Same issues for me also. I replaced the battery,with no positive effect. The only thing to help is installing the app wake lock. Phone now works, but this does not solve the poor ram handling.

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