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galaxy s 2 acting strangely, battery drain and randomly going into driving mode

I got my sgs2 about a month ago and its been like a dream, battery lasts for a long time phone runs ultra smoothly no glitches and nothing weird has been happening, but these last few days its just been really weird.
1) it started randomly going into driving mode, i dont even know how to activate it or what it does, but i think its draining my battery
2)When i was watching a tv show on my phone it thought that there was an hdmi cable connected and wouldnt let me hear anything through my headphones. i exited it several times but it still though there was a cable connected. Then i went straight home and quit it from the task manager and it worked with the headphines but that might have been a coincidence.
3)When i connect the charger it takes a while to realize that its charging and sometimes stops charging and says that the battery is too hot or too cold but when i feel the phone it feels completely normal.
4)When i connect the usb cable, other than taking a while to realize that its connected to a charger it doesnt realize that its a usb so i cant transfer files with my computer which i do often
5)I pressed home before and it took me to some sort of clock which i imagine is for a dock but i have no such thing
6) Even after using the phone for a while and using several apps the android os has used 59% of my battery, when usually its the display that uses about 30 or 40%
none of these things had happened before and now they randomly started all at once, i havent downloaded any shady apps so i doubt its malware
any ideas?
thanks

Are you using a stock firmware or custom?
Have you tried resetting back to factory default?

camiloorozco said:
I got my sgs2 about a month ago and its been like a dream, battery lasts for a long time phone runs ultra smoothly no glitches and nothing weird has been happening, but these last few days its just been really weird.
1) it started randomly going into driving mode, i dont even know how to activate it or what it does, but i think its draining my battery
2)When i was watching a tv show on my phone it thought that there was an hdmi cable connected and wouldnt let me hear anything through my headphones. i exited it several times but it still though there was a cable connected. Then i went straight home and quit it from the task manager and it worked with the headphines but that might have been a coincidence.
3)When i connect the charger it takes a while to realize that its charging and sometimes stops charging and says that the battery is too hot or too cold but when i feel the phone it feels completely normal.
4)When i connect the usb cable, other than taking a while to realize that its connected to a charger it doesnt realize that its a usb so i cant transfer files with my computer which i do often
5)I pressed home before and it took me to some sort of clock which i imagine is for a dock but i have no such thing
6) Even after using the phone for a while and using several apps the android os has used 59% of my battery, when usually its the display that uses about 30 or 40%
none of these things had happened before and now they randomly started all at once, i havent downloaded any shady apps so i doubt its malware
any ideas?
thanks
Click to expand...
Click to collapse
seems like majority of your problems are linked with the micro USB port, try resetting your phone and see if that helps. This is weird though.
It happened once to me on my sgs but that was because I inserted the charging pin without realising it was wet but it went back to normal a few days later and I changed my charger.

i was also starting to think it would be a micro usb problem,
would a factory reset fix it?
if so how would i back up my apps so that i have the same apps with the same progress on them, is it even possible?
or should i just wait and see if it goes back to normal?

I am also having this issue now. I've tried a factory reset with no effect. The phone is now largely unusable. Did you get a resolution? If so, how?

im having the same problem too .. wish it's just a software issue!!

the problem solved itself after a couple of days, i took out the battery and left the phone alone for about a day and after it worked fine again, not sure if it was the time or leaving it without battery but its working normally again

I'm having this exact problem - phone switches into driving mode, then says MTP is connected - then it switcheds to a strange lock-screen I have never sen before. It's really strange. I flashed a nandroid backup from a few months back and still the problem is there. I'd flash back to stock and send it in - but I can't connect to Odin via USB because of the problem. Is there anyway to convert a Stock rom to a CWM flashable file?
I'm desperate to get this sorted.

Experiencing the same. Has anyone a proven solution for this?

My phone, sorted itself out - should I say my wife sorted it out - by mistake. What I think she done was hold down the home button, and then pressed the power off button together and held them untill the phone switched off. When my phone came back on again - she had somehow removed the -Exclamation Triangle of the kernel counter and removed the problems from this post - that I'd been experiencing for abouyt 5 months prior.
Go figure - I now have a SGS2 that works beautifully again and has also had any kernel counter and Custom Rom flashing notifications removed altogether. I wish I knew why this worked, as I'm sure their are many who would like to remove the Triangle without a jig.
The other option that seeemd to work for other people was to clean the MicroUSB port of the device with a dry, clean toothbrush - though this did nothing for my problem. Good luck -I know how frustrating it is.

Help Please
Guys, I am Facing the EXACT same problem.
1.Driving mode on/off automatically
2.Showing a lockscreen which shouldn't have existed on this planet.
3.Hanging up unconditionally. Have to restart phone.
4.Sudden "mtp connections" and because of that "Media Scanner"
I own a Galaxy note just 1 month old! I was so angry that i wanted to sell this. But i couldn't adapt to any other smaller screens so, guess ill try fixing this.
1.It definitely is something related to usb port (Since i cannot charge my phone, i use an external charger)
2.Took my beloved to a samsung service centre, they said phone is waterlogged and showed me the motherboard, saying"IC MIGHT be damaged"
3.Cost for repair - $200
4.Cannot afford that. I am guessing they were bluffing cause i saw the shiniest motherboard ever
5.Please fix this, or ill be stuck with a Nokia 500 !!
6.I can, however afford changing the usb connector, anyone successful with that?
Edit: Did my homework and found out that its definitely a usb port problem. Solution:Clean the usb port. Ill try try it and get back to you ppl. Oh and about 20% of the world's population is facing the same problem.
Edit(2): SOLVED!!!
1. Turn Off phone
2. Remove battery.
3.Take a Brush with hard bristles(Toothbrush/Artist's Brush)
4.Take a pin.
5.Take your own sweet 15mins to perfectly clean the micro usb port using the brush. Nicely and Tidily, give all possible strokes to flawlessly remove any dirt in there.
4.Then take your pin(Be careful here) and gently insert it into the gap between that small metallic micro slab and the bottom part of the usb Connector and gently move it up, VERY GENTLY!!!
5.Clean the battery's charging plates using a cloth, i used my own T-Shirt.
6.Put battery in and REBOOT.
7.Clean the charging pin of the charger using the safety pin/Brush or both.
I have it on for 15mins and no problems. Removed and put the charger again and again, still no problem. After waiting for 1 week, i am able to charge it using its charger! Now lets see whether it lasts......:-/
Edit(3): So, my phone acted up again last night, with driving mode and car dock. I used the pin solution, No problem till now. its Peacefully charging. Bah! it really is annoying
Edit(4): Now, its been 24 hours since my last solution, and phone hasnt acted strange. I guess after another 12 hours ill rule out the permanent solution. Which i used.

same here
Well.. I'm having similar issue. Battery drain and random driving mode/voice search sometimes. It all started after last OTA update and rooting without changing a ROM to custom. I've clean out USB port and no result. Maybe it's time to scan system with AV or unroot device...

eihwazz said:
Well.. I'm having similar issue. Battery drain and random driving mode/voice search sometimes. It all started after last OTA update and rooting without changing a ROM to custom. I've clean out USB port and no result. Maybe it's time to scan system with AV or unroot device...
Click to expand...
Click to collapse
The problem is the stock firmware
Sent from my SGH-I777 using Tapatalk 2

Phalanx7621 said:
The problem is the stock firmware
Sent from my SGH-I777 using Tapatalk 2
Click to expand...
Click to collapse
I've loaded CM9 on my international Galaxy Note and the car mode still pops up randomly all of the time.

ckeswar critics,
davearose said:
I've loaded CM9 on my international Galaxy Note and the car mode still pops up randomly all of the time.
Click to expand...
Click to collapse
I had the same issues 2 weeks after i bought my galaxy s2. Took it to Samsung customer care and they replaced the micro usb port. Haven't had a single issue since.
PS: Try to dry out the port and the phone if it is a water logging issue. I used a hair drier to do that. Luckily the tab that indicates water damage hadn't changed colour.

Had same issue with my Samsung Galaxy Note - randomly going in and out of driving mode, used a dry, soft toothbrush to clean out the USB Charging port, so far so good.
Make sure to flick the bristles of the toothbrush back and forth with your thumb first as you might see a lot of dust fly off of it.
Don't use anything hard like a pin or needle as you might scratch the contacts.

archer2009 said:
Had same issue with my Samsung Galaxy Note - randomly going in and out of driving mode, used a dry, soft toothbrush to clean out the USB Charging port, so far so good.
Make sure to flick the bristles of the toothbrush back and forth with your thumb first as you might see a lot of dust fly off of it.
Don't use anything hard like a pin or needle as you might scratch the contacts.
Click to expand...
Click to collapse
Same here with my gs2... Resolved the issue using some contact spray on my micro USB port.

camiloorozco said:
I got my sgs2 about a month ago and its been like a dream, battery lasts for a long time phone runs ultra smoothly no glitches and nothing weird has been happening, but these last few days its just been really weird.
1) it started randomly going into driving mode, i dont even know how to activate it or what it does, but i think its draining my battery
2)When i was watching a tv show on my phone it thought that there was an hdmi cable connected and wouldnt let me hear anything through my headphones. i exited it several times but it still though there was a cable connected. Then i went straight home and quit it from the task manager and it worked with the headphines but that might have been a coincidence.
3)When i connect the charger it takes a while to realize that its charging and sometimes stops charging and says that the battery is too hot or too cold but when i feel the phone it feels completely normal.
4)When i connect the usb cable, other than taking a while to realize that its connected to a charger it doesnt realize that its a usb so i cant transfer files with my computer which i do often
5)I pressed home before and it took me to some sort of clock which i imagine is for a dock but i have no such thing
6) Even after using the phone for a while and using several apps the android os has used 59% of my battery, when usually its the display that uses about 30 or 40%
none of these things had happened before and now they randomly started all at once, i havent downloaded any shady apps so i doubt its malware
any ideas?
thanks
Click to expand...
Click to collapse
It's just a software problem, the reasons might be:-
1) you might have opened and closed some huge apps randomly and very rudely..
2) You are low on space on the internal MMC Card
3) Your phone might be performing the restarting apps re scheduler
Solutions:-
1)Factory Data reset will not help as the cache section might be corrupt.. neither the android 3e will help...
2) a)Use odin and download the Latest firmware package from Sammobile's Website.
b) for tutorial on flashing, go http://forum.xda-developers.com/showthread.php?t=2488942.
c) Do not touch the phone after processes and restart was observed...
d) Again get into download mode and re flash the same Firmware again...
e) Restart the phone holding the HOME key, (it won't do anything by itself)
f) it will surely fix your Phone
3) Message me if any problem persists...

avaneesh3 said:
1. Turn Off phone
2. Remove battery.
3.Take a Brush with hard bristles(Toothbrush/Artist's Brush)
4.Take a pin.
5.Take your own sweet 15mins to perfectly clean the micro usb port using the brush. Nicely and Tidily, give all possible strokes to flawlessly remove any dirt in there.
4.Then take your pin(Be careful here) and gently insert it into the gap between that small metallic micro slab and the bottom part of the usb Connector and gently move it up, VERY GENTLY!!!
5.Clean the battery's charging plates using a cloth, i used my own T-Shirt.
6.Put battery in and REBOOT.
7.Clean the charging pin of the charger using the safety pin/Brush or both.
Click to expand...
Click to collapse
I registered on this forum just to say that this is a great solution. It looks like my phone is saved now
Hope it will not happen again.

P6810 suddenly won't turn on

Anyone come across this? I put it on standby last night after reading a bit of my book on it, and it had around 50% power remaining. This morning, it was totally unresponsive; pressing the power button does nothing at all. I've charged it for 12 hours in the meantime.
I've done the following all with and without the power attached:
- Pressed and held power for 15 seconds through to a minute
- Pressed and held volume up with power to attempt to get into recovery for up to a minute
- Pressed and held volume down with powerfor up to a minute
- Pressed and held power while touching screen (read that one off another forum)
I guess potentially it could be on and in a crashed state and unresponsive to the power, so maybe in a weeks time when it runs out of juice, I'll be able to charge it and power it back up, but in the meantime, I'd welcome suggestions.
A few weeks ago I updated it to the official ICS build that was released, but did the update myself rather than using KIES, as KIES didn't even recognise my Tab's firmware original version. It's been absolutely fine before the update, and since. I only mention it because I've read about the Samsung build of ICS being prone to self bricking itself, but I couldn't determine what the symptoms of this vulnerability were.
Thanks for any help offered,
Will

did you try connecting USB cable and plugging it into your PC? did u get any activity? can ADB recognize your tab?

I think your tab just ran out of juice and the battery's protection circuit has kicked in. Try taking it to an electronic shop and plugging in different chargers preferably one with an output more than 2.1 amps to kickstart the charging. Plug it in and wait till the charging animation starts.
Sent from my GT-P6800 using xda premium

Had the same problem while on holidays. Once the battery goes below a certain level, you won't be able to charge it through USB any more. Instead you need to use the wall charger.
I think it's bad enough that the 7.7 doesn't have a micro USB port, but things like that are just stupid and Samsung made a big mistake here. It don't think it's the same with the newer tablets though. It's also not possible to just buy cables or chargers for this strange Samsung port, so when you forget your wall charger at home at some point you won't be able to use your tablet any more.
As long as you charge with the USB cable early enough, you can avoid it though.

A few months ago I experienced the same thing, the Tab just wouldn't turn on anymore.
I tried all there is without any luck.
Contacted amazon and they replaced it with a new one in less than 48 hours.
So far not Problems with the new device.

I have the P6800 and this morning I took it off charge. Put it into standby and only used it for about 20 mins then left in standby all day. It had about 95% remaining when I did so.
Picked it up this evening and the lower left area of the screen was warm and it would not switch on. Didn't think of the ADB idea but will try this next time but I had to reset it and when it powered on tonight after the reset, it was down to 15%. Within about 2 mins of checking stuff it was down to 3%.
Something is running when it is in standby but as I can't switch it on I can't check with BetterBatteryStats or CPUState to know what is wrong.
It does this every day. I am tempted to do a factory reset and reinstall only limited software.
Dave...

I see this thread is a little old but this has just happened to my P6810 too. A pity nobody reported back what the end result was.
My device had at least 95% battery last night but today I can't get it to respond at all, I've tried the wall charger and still nothing.
Anything else someone could suggest for me?
Edit. I tried getting anything from it connected to my PC but it couldn't find a device there. However I then tried it on the wall charger again and now get a blue battery icon, quite big, with a five step animation indicating that it is charging.
No idea how it went flat as the battery on this lasts a long time assuming the screen isn't on. When it boots properly I'll have a look at what the most recent apps I installed were as it has only done this once. Before this it has been perfect for the three weeks I've had it.

Cluey said:
I see this thread is a little old but this has just happened to my P6810 too. A pity nobody reported back what the end result was.
My device had at least 95% battery last night but today I can't get it to respond at all, I've tried the wall charger and still nothing.
Anything else someone could suggest for me?
Edit. I tried getting anything from it connected to my PC but it couldn't find a device there. However I then tried it on the wall charger again and now get a blue battery icon, quite big, with a five step animation indicating that it is charging.
No idea how it went flat as the battery on this lasts a long time assuming the screen isn't on. When it boots properly I'll have a look at what the most recent apps I installed were as it has only done this once. Before this it has been perfect for the three weeks I've had it.
Click to expand...
Click to collapse
This is the infamous Sleep-Of-Death issue that is randomly experienced by myself and other users here, usually happens when WiFi bugs out due to weak signal

TeeeJaay said:
This is the infamous Sleep-Of-Death issue that is randomly experienced by myself and other users here, usually happens when WiFi bugs out due to weak signal
Click to expand...
Click to collapse
hhmmm, interesting.
I was having trouble with wifi just before this happened. Both my GS2 and this have been claiming to connect to my wifi but aren't actually getting an IP address from it.
I can't remember if it was last night or the night before but I manually set an IP address, the signal strength is fine as my abode isn't very big.
After it has recharged I'll have a poke and see what I can find, thanks for the reply.

So my device seems to be working fine again. It had gone SO flat that the date and time were incorrect!
After I could power it on I had a look at Better Battery Stats and nothing looked wrong so I have no idea what happened. None of the apps I'd installed the day before it played up had long wakelocks and weren't running when I turned it off.
For reference they were:
My Tracks
MyTrails
Google Earth
AndSMB
I'd turned both of the GPS tracking devices off before I turned it off for the night.
It hasn't played up since but it hasn't been long so I'll see what happens.

Yeah, the sleep of death is incredibly annoying. Honestly, the GTab 7.7 is a **** device. Samsung made way too many mistakes and won't do anything to fix it.

A similar thing happens to me every once in awhile. The way i check to make sure everything alright is to see if it boots into download mode. I just leave it plugged in for a couple hours and it eventually comes back on.

someth1ng said:
Yeah, the sleep of death is incredibly annoying. Honestly, the GTab 7.7 is a **** device. Samsung made way too many mistakes and won't do anything to fix it.
Click to expand...
Click to collapse
this is why my 7.7 is the last tablet/phone from Samsung i'll never trust them they are just bombarding the market with new devices and leaving the old ones to dust

^thats what I thought too but that gs4 is really tempting. I've heard worse about HTC in that regard anyways so that why I'm not going with the one.

Finally.. i bought Sony xperia Z.
I'll sell my galaxy tab 7.7. I.m very disappointed with samsung.
Sent From XPERIA Z

kishd said:
I think your tab just ran out of juice and the battery's protection circuit has kicked in. Try taking it to an electronic shop and plugging in different chargers preferably one with an output more than 2.1 amps to kickstart the charging. Plug it in and wait till the charging animation starts.
Sent from my GT-P6800 using xda premium
Click to expand...
Click to collapse
Unbelievable! ... this trick still works ... thank you very much for you help ...

^^ yo, this 'trickle charge' trick did NOT work on my (long) dead P6800... any other suggestions??

Quite strange because my Samsung GT-P6800 tablet was fully charged, it went completely blank dark as if it was off. To my amazement, SMS keeps dropping and calls kept coming in. Yet it is still as blank as though the tab was off. I pressed the power button and the volume up bottom for it to reboot. It rebooted without the screen coming up. It has been blank for two days now. What could be the cause? And what possible solution can be given?

[Q] Some really weird problem over here.

Once, i was halfway using whatsapp then phone turned off automatically, when I turn it back on i was able to boot up past the bootscreen until i got this: Refer to Picture 003.jpg
Then I did a complete reset via CWM. I even installed CNA 3.6.6 (I was using 3.5.0 before this)
Still no avail, do I've decided to flash back to 4.0.4 to see whether things are working out or not.
I did it via fastboot.
Same thing.
What could be the problem?
Do take note that even though in the picture I'm booting it up in safe mode but still no avail for normal mode.
And, when I'm charging my phone with the power switched off I'm getting this: Refer to Picture 004.jpg
Supposedly it's a battery icon that indicates charging activity but I'm getting a battery icon with (blinking) exclamation mark.
What's wrong?

Try a new battery
Sent from my Nexus S using xda premium

jayjay3333 said:
Try a new battery
Sent from my Nexus S using xda premium
Click to expand...
Click to collapse
Gonna try it soon as soon as my friend is with me. Anyways, the picture I've attached shows the shutting down popup.
When it first occured(and for the next few times)it's without the popup and i can't even pull down my notifications window. BUT the 4 buttons worked. they responded by vibrating.

zennasyndroxx said:
Gonna try it soon as soon as my friend is with me. Anyways, the picture I've attached shows the shutting down popup.
When it first occured(and for the next few times)it's without the popup and i can't even pull down my notifications window. BUT the 4 buttons worked. they responded by vibrating.
Click to expand...
Click to collapse
its a battery issue for sure
or maybe your usb is broken, but i dont think so

Cascabreu said:
its a battery issue for sure
or maybe your usb is broken, but i dont think so
Click to expand...
Click to collapse
warning! TL; DR post about what happened to my phone.
I've left my phone (accidentally) under heavy rain for almost an hour.
By the time I got my phone back it's still working, but with a (kinda) faulty loudspeaker.
Others went a-okay.
I turned off and let it stay put for everything inside to dry up then charge. Realized that I can't charge at all. I can't even connect to computer or whatnot. So I brought it to a service center. They told me it's mobo issue and I've decided not to fix it (cause my warranty's over)
That day when I brought it back from service center, miraculously I can charge my phone! was happy at first then I kept on charging. Then story continues as first post.

same thing here!
zennasyndroxx said:
warning! TL; DR post about what happened to my phone.
I've left my phone (accidentally) under heavy rain for almost an hour.
By the time I got my phone back it's still working, but with a (kinda) faulty loudspeaker.
Others went a-okay.
I turned off and let it stay put for everything inside to dry up then charge. Realized that I can't charge at all. I can't even connect to computer or whatnot. So I brought it to a service center. They told me it's mobo issue and I've decided not to fix it (cause my warranty's over)
That day when I brought it back from service center, miraculously I can charge my phone! was happy at first then I kept on charging. Then story continues as first post.
Click to expand...
Click to collapse
i bought my nexus from a man for 25$ because it wasnt able to charge and when u turned it on it just went stuck on the motion starting picture.
so i went to a technician and he told me to buy the usb port , i found the original port for nexus s on ebay, so he fixed it...
since then i am able to charge it (with a exclamation sign if its off) and i have even intalled every rom i have found here, via odin/fastboot/CWM, etc. but nothing... so it keeps on stucked on the starting picture, sometimes just SOMETIMES it went up like yours, *going up and saying/showing Android System icon, batterymetter on the upper part of the screen, middle screen; saying power off, shutting down, after some secs, vibrates and goes OFF.
only with slimbeam i got that behavior always turn it on.
p.s. the USB port was unable because phone have been wet (from the other owner hands)...

one thing, make sure the battery contact points are clean i know its dumb but it could help

Still the same.
qaz2453 said:
one thing, make sure the battery contact points are clean i know its dumb but it could help
Click to expand...
Click to collapse
Still the same thing. Then I left my phone unattended for a day.
It's back up and running after I turned it back on.
Then the same thing happened again. But I just left my phone idle.
Man what's wrong

dude, tell me something...
zennasyndroxx said:
Still the same thing. Then I left my phone unattended for a day.
It's back up and running after I turned it back on.
Then the same thing happened again. But I just left my phone idle.
Man what's wrong
Click to expand...
Click to collapse
man, anything new?
i would like to know how to install EVERYSINGLE THING on the nexus s, i mean like a stock boot or fastboot, or a new BIOS..
help me over here ! please. i would be pleased,

Nexus S i9023 Android 4.1.2 Update
Yesterday i got OTA update 4.1.2 in my Nexus S i9023 in India. But after restarting the system for installation for some reason the update was not done. After hard booting the device when it logs on, it was showing 4.1.1. But when i am checking whether any system update is there, it is showing no update. How to get it again ????

Z3 will not turn on no matter what

So this morning i unplugged my phone, fully charged, and used a flashlight app. Then all of the sudden my phone just went black and i have not been able to get it to do anything for over an hour and a half now. No matter what i do it will not turn on. Ive tried to power button/rockers combo to get it to turn on, nothing, Ive tried the little button in the sd card compartment, nothing.... Anyone else have this issue? I cannot find anything on the Z3 for this, only stuff for the older models... Thanks.

Hold volume up and power button until the phone vibrates. Then connect a USB cable to your computer while holding volume down on the phone. If the phone is recognised by the pc you should be able to flash your phone using flash tool and hopefully that will get you back up and running. That's the only solution I can think of. Maybe some other members might be able to help if this don't work.

nobby00900 said:
Hold volume up and power button until the phone vibrates. Then connect a USB cable to your computer while holding volume down on the phone. If the phone is recognised by the pc you should be able to flash your phone using flash tool and hopefully that will get you back up and running. That's the only solution I can think of. Maybe some other members might be able to help if this don't work.
Click to expand...
Click to collapse
Nothing... I cant get the phone to do anything at all. I really do not understand.

I can't help then mate other than suggesting taking it back to where you got it from or sending it to Sony. Hopefully somebody else can help you out to save you the hassle

Planeck said:
Nothing... I cant get the phone to do anything at all. I really do not understand.
Click to expand...
Click to collapse
Did you hold the buttons in for ages; literally 20 or 30 seconds?

poldie said:
Did you hold the buttons in for ages; literally 20 or 30 seconds?
Click to expand...
Click to collapse
Over a minute, still nothing

Planeck said:
Over a minute, still nothing
Click to expand...
Click to collapse
Hello, my girlfriend have the same problem in his Xperia Z3. When she works his phone lying on the desk. She want call to me and the power/lock button don't work. She call to me from other mobile phone and she describe problem. After 10 seconds search in google I find a way to restart phone. She pressed little yellow switch under nano Sim/micro SD plug. Phone power down and never give up. Power button is dead, combinations : vol+ and power , vol- and power, vol+ and vol- and power also didn't work. When I plug the USB cable the charging will start normally. In screen I have a big battery icon with animation.
Maybe someone have similar problem with Z3 and know a solution??

Well if its the button, tap to wake could solve the problem till you decide to get it repaired.
It could also be a battery issue. Try charging for a few hours on a charger and then try turning on after connecting to a PC with phone drivers by holding the power button for like 10secs. That is the method used for HTC phones with similar issues.
The HTC One X had battery issues for some where it would not turn on until it was connected to thr charger for a few hours. I had, had the same issue you mentioned and tried the method mentioned above but never turned on. Repair shop tested the battery and eventually had to replace a bad mothetboard.

That is not normal and even if you could get it back from that sort of failure, you don't want this device unless it is fixed or replaced.

abhinav.tella said:
Well if its the button, tap to wake could solve the problem till you decide to get it repaired.
It could also be a battery issue. Try charging for a few hours on a charger and then try turning on after connecting to a PC with phone drivers by holding the power button for like 10secs. That is the method used for HTC phones with similar issues.
The HTC One X had battery issues for some where it would not turn on until it was connected to thr charger for a few hours. I had, had the same issue you mentioned and tried the method mentioned above but never turned on. Repair shop tested the battery and eventually had to replace a bad mothetboard.
Click to expand...
Click to collapse
Still nothing. Power/unlock button is dead. Today I go to sell point (T-mobile Poland ) and leave for warranty repair. I used Xperia Z3 for 2 weeks

If you are within 14 days TMO should give you a brand new device.

I'm having the same problem too. I tried to use the flashlight app for the first time and it just completely bricked my Z3.

abhinav.tella said:
If you are within 14 days TMO should give you a brand new device.
Click to expand...
Click to collapse
acpg100 said:
I'm having the same problem too. I tried to use the flashlight app for the first time and it just completely bricked my Z3.
Click to expand...
Click to collapse
Hello,
Xperia Z3 back from repair few days ago. Message from service: hardware repair, updated soft, phone is 100% functionality and compatible with specification from producer.

Ive just received my z3 as replacement for g flex and its from Plus poland lol.
Sent from my Xperia Z3 using XDA Free mobile app

Just happened to me today- Xperia Z3 Compact
So last night, i left my phone to charge after reaching 5%. When I woke up, my phone won't start and it won't charge either. The LED indicator was not lighting when it is plugged.
I tried every trick:
1. Pressed down the power button in different lengths.
2. No. 1 but with the volume down key
3. Pressed down the yellow button on the sim card tray
4. Tested 5 different charger heads and different wires
5. Tried connecting to 2 different laptops to see if my phone will be recognized
I work close by a Sony Center so I was planning on passing by after work. I was already having a really bad day and my phone is not under warranty. Throughout the morning, I'd randomly check the power button if it will finally work. FORTUNATELY, during lunch, the LED indicator finally lit up! The batt was drained so I had to charge it and wait a few minutes before turning it on. Finally it's on. I don't know what the eff happened or if it is really resolved.
I'd still want to know what the hell is wrong with Xperia Z phones??

Mines 'died' twice, both times the only way I could get it to turn back on was to connect to magnetic charger dock/cable

this is really works on me.. !!! try this one.....
anthgabb said:
So last night, i left my phone to charge after reaching 5%. When I woke up, my phone won't start and it won't charge either. The LED indicator was not lighting when it is plugged.
I tried every trick:
1. Pressed down the power button in different lengths.
2. No. 1 but with the volume down key
3. Pressed down the yellow button on the sim card tray
4. Tested 5 different charger heads and different wires
5. Tried connecting to 2 different laptops to see if my phone will be recognized
I work close by a Sony Center so I was planning on passing by after work. I was already having a really bad day and my phone is not under warranty. Throughout the morning, I'd randomly check the power button if it will finally work. FORTUNATELY, during lunch, the LED indicator finally lit up! The batt was drained so I had to charge it and wait a few minutes before turning it on. Finally it's on. I don't know what the eff happened or if it is really resolved.
I'd still want to know what the hell is wrong with Xperia Z phones??
Click to expand...
Click to collapse
just do the no .3 ... and it works to me... thank u for posting this .. it helps me a lot.......

It's called the 'sudden death' bug and a small number of sony xperia phones die from it., including the Z3. It is more common in the Z3 Compact (I suffered from it and had to get it replaced). Just google sony Z3 sudden death.
Did the OP use a quick charger on his Z3? The reason I ask is that the repairer I sent my Z3C to originally said the motherboard was gone and needed to be replaced, possibly cased by current. I used to use a quick charger on my Z3C and wonder if it caused it as the phone worked perfectly for 6 weeks before dying.
There are several so called fixes and workarounds that work for some people, not all. Only a motherboard replacement fixes it properly.

Fix for Z3 not powering up / no charge LED
My Z3 would not power up and no charge LED when cable plugged in. Finally found this solution on Sonymobile support website which fixed my phone!
To force the device to restart
Detach the SIM card slot cover.
Using the tip of a pen or similar object, press and hold down the small OFF button (generally indicated by the text "OFF") until the device has emitted three vibrations, and then release the OFF button. The device turns off automatically.
Charge the device until a charging icon appears on the screen.
Turn on your Xperia™ device.
If a forced restart procedure as described above doesn't succeed in turning on your device, you should try another kind of forced restart - the 2-minute restart procedure.
To force a 2-minute restart
Detach the SIM card slot cover.
Using the tip of a pen or similar object, press and hold down the small OFF button (generally indicated by the text "OFF") for 120 seconds (ignoring any vibrations), and then release the OFF button.
Charge the device until a charging icon appears on the screen.
Turn on your Xperia™ device.
I had to hold the 'off' button for about 60 seconds before the phone vibrated and sprung into life - phew!

I bought mine with the broken screen so I don't know for sure what happened. Bid won for $37
The led light came on when plugged in, but no vibrations. The computer recognized it and installed as the D6633. Properties show the battery had charged to 29%, 60%, 99%.
But clicking into it just shows a blank page. No folders, drive volumes, or anything.
However if it is not hooked up to a charger or computer then as well as no vibration there is no lights either. Does get a little warm though.
Bought the new display and powerflex. Still wont turn on, no vibrations, and only shows led when plugged in.
Tried the volume up, down, power, all three, reset button in sim tray.
PC Companion can't work with it. It almost worked once but said if there was a google account and I did not have the info I would be facing the whole account lock fiasco....No thank you. Can't even get it to recognize it for that option properly anymore anyway.
Could easily connect it into fastboot mode, but getting it into flash mode took much much much more effort. But eventually I did and flashed an image with flash tool. Went fine. Flashed everything......NO CHANGE......
I'm guessing at this point maybe the board was more damaged than seems....Though it's weird how the computer recognizes it and can flash everything.
Or there is a damaged power IC, transistor, capacitor, or something.
I really hope Sony took care of this in the Z5 and it is no longer an issue in future devices. It was said in a few comments above that only a few people are affected....Yet there are endless searches and pages with a dramatic number of users facing it.

Phone completely died suddenly while being used

As per title, I was using my stock G Flex 2 to browse the internet and had it plugged in the charger and without even a warning, the display shut off and the phone ceased to be responsive. It didn't power off or anything, just died instantaneously and I can't turn it on again no matter how long I press the power button or leave the charger in.
I tried opening the back cover and disconnecting the battery, and reconnecting it but nothing changed.
What does this mean for me? The phone is over a year old already and as such, no warranty is left. It's really disappointing LG would release a phone that dies less than 2 years in use. My previous LG device, an Optimus G, also suddenly died and became a paper weight after the first year. I feel like an idiot buying this phone now.:crying::crying:

did you changed motherboard all that time you have the phone if not thats the problem because if you bought first parts of lg g flex 2 that will happen what varriant you have

nikolas60 said:
did you changed motherboard all that time you have the phone if not thats the problem because if you bought first parts of lg g flex 2 that will happen what varriant you have
Click to expand...
Click to collapse
No I have never messed with any of the internal components before. It is stock H959 model.
So what does this mean? The phone is gone??

can you go into download mode
it happen same as you. check if you can go into download mode.

shoutingtech said:
it happen same as you. check if you can go into download mode.
Click to expand...
Click to collapse
Hi, I tried download mode but nothing happened. Press and hold Volume UP and connect USB to PC method.
So I guess my phone is useless now. How did your phone end up as?

That happened to mine too.
H950, flashed with 5.1.1 PR and rooted.
Was using it normally, 70% battery. Suddenly died. Got me scared, thought it had fried or something. The screen kept warm in the upper part, but no response at all.
When I arrived home, around 1 hour later, decided to mess around. Lg Pc Suite didnt recognize it, neither did the computer.
It was dead.
Then, being a bit stubborn, I decided to press both Power and Volume Down (or UP, I dont remember) buttons for a long time. After maybe 40 seconds of pressing the phone came back to life and never had problem with it since.

Danielgomes08 said:
That happened to mine too.
H950, flashed with 5.1.1 PR and rooted.
Was using it normally, 70% battery. Suddenly died. Got me scared, thought it had fried or something. The screen kept warm in the upper part, but no response at all.
When I arrived home, around 1 hour later, decided to mess around. Lg Pc Suite didnt recognize it, neither did the computer.
It was dead.
Then, being a bit stubborn, I decided to press both Power and Volume Down (or UP, I dont remember) buttons for a long time. After maybe 40 seconds of pressing the phone came back to life and never had problem with it since.
Click to expand...
Click to collapse
I tried holding the buttons down in all different combinations for over 1 minute, but nothing happens. I even tried removing the battery and just using the charger to turn on the phone, also nothing happened.
So at this stage, I'm guessing most likely the hardware has failed, maybe the CPU or the motherboard or something. Because it died so suddenly, like a TV when you pull the power plug. Overheating perhaps?

plugin in it to charger?
kakamotion said:
Hi, I tried download mode but nothing happened. Press and hold Volume UP and connect USB to PC method.
So I guess my phone is useless now. How did your phone end up as?
Click to expand...
Click to collapse
anything happen when you plugin in it to charger?
mine still happens but minimized now, it happens like once or twice a day.

Just had the exact same thing happen to my H955, tried all the steps above but it's still not turning on

Nadz156 said:
Just had the exact same thing happen to my H955, tried all the steps above but it's still not turning on
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Click to collapse
It's been three days and my phone still wont' turn on, react to charging or USB connection. For me, its probably garbage already...good luck for you though.

kakamotion said:
It's been three days and my phone still wont' turn on, react to charging or USB connection. For me, its probably garbage already...good luck for you though.
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Click to collapse
I can get the red notification light to come on for a few seconds but it dies after that so there must be some form of life still within it.

me i changed motherboard for free with waranty same happen

nikolas60 said:
me i changed motherboard for free with waranty same happen
Click to expand...
Click to collapse
Just put in a warranty repair request, do you remember what the procedure was like?

Nadz156 said:
Just put in a warranty repair request, do you remember what the procedure was like?
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Click to collapse
you just go to the store with the warranty invoice paper you got from the store you bought it

My phone is out of warranty, and where I am located, I can't find motherboards at a reasonable price.
Can anyone please mail me their extra motherboards, even its damaged, for a small fee?
EDIT: I'm in Malaysia

nikolas60 said:
you just go to the store with the warranty invoice paper you got from the store you bought it
Click to expand...
Click to collapse
I got mine from Amazon and I'm from the UK so LG have no authorised service centres here according to their website, says they'll repair it onsite but I've had no contact from them so far.

there is man in uk of course

So after playing around with it for a while, I managed to bring the 0% battery screen up (with a yellow triangle) and left it to slow charge via my laptop. After 20 minutes or so it started booting up as normal and I reached the lock screen which said it was at 5% and charging. However a few seconds later it just cut out and is back to being a brick, I'm guessing the motherboard is the problem?

Mine Too
Mine G Flex 2 (H950) died while i was using it about 2 months ago .Till now no signs of life ....
Tried to charge it ,removed battery and reinserted ,but no use,it won't show any sign of life ...Does not show up on PC when connected with a cable ....:crying::crying:
i had just replaced my battery 2 months ago before this problem ...Seems like i wasted a lot of money on this device .....No warranty more than 1 year since i got it .....I think its some motherboard problem .....
Mine used to overheat as soon as it was booted up ..
Any one knows any cause/solution for it ???

This phone is really faulty. Last month i suffered bootloop so i sent it to repair. It lasted 1 month and now its broken again, after few minutes it self-restarts because it suddenly stops reading SIM card. And its not really faulty SIM card,because it works in my second phone perfectly.