won't power on but battery not flat, recovered after an hour charging - Xperia Z2 Tablet Q&A, Help & Troubleshooting

Anyone had an issue where out of nowhere, the tablet appears bricked, won't respond to power button even held down for >30 seconds?
Mine did that and it was at around 50% battery.
I charged it anyway for around an hour and then it powered on OK (phew). The battery said 90% on poweron, so I know for a fact it wasn't flat when it 'softbricked' (as an hour will only charge the battery halfway or even less).
I was running stamina mode, not sure if its got anything to do with it.
Really hope it doesn't repeat otherwise I have to return it.... or is this software bug....

i believe its volume up + power button for hard reset
and it seems like you have a faulty one... try repairing it with sony pc companion first, if the problem still persist then exchange for a new one.

I figure I"ll give it at least an update first before returning it. Its otherwise a fantastic device, and this is the first trouble I've had.
FWIW it hasn't done it again, been around 48 hours now.so hoping one off.

wintermute000 said:
I figure I"ll give it at least an update first before returning it. Its otherwise a fantastic device, and this is the first trouble I've had.
FWIW it hasn't done it again, been around 48 hours now.so hoping one off.
Click to expand...
Click to collapse
I had, but as @LitoNi writes you must press power + volume up simultaneously in 10 seconds. It is written in the installation guide that came along with your tablet. I first tried the small red button next to sd-card in vain, because that is reset on my Z Ultra.

pmeinert said:
I had, but as @LitoNi writes you must press power + volume up simultaneously in 10 seconds. It is written in the installation guide that came along with your tablet. I first tried the small red button next to sd-card in vain, because that is reset on my Z Ultra.
Click to expand...
Click to collapse
OK so you had the problem as well? Has it recurred for you?
next time try charging it for an hour, might save you a hard reset

wintermute000 said:
OK so you had the problem as well? Has it recurred for you?
next time try charging it for an hour, might save you a hard reset
Click to expand...
Click to collapse
Yes, pressing power+volume up restarted.
it's a soft-reset (power cycle) not hard reset.
Hardly anything to do with battery in my case, since it was fully charged and still was after soft-reset. It just happened from one moment to the next. I was sitting with several gadget and switching between them. Since I am rooted, It could be an xposed module locking up.
I was very worried at the time, till I found the guide. I hasn't occured since.

Holding down:
volume up + power button = ~1-3 seconds = 1 vibrate = reboot/hard reset
volume up + power button = ~5 seconds or more = 3 vibrate = force shut down

LitoNi said:
Holding down:
volume up + power button = ~1-3 seconds = 1 vibrate = reboot/hard reset
volume up + power button = ~5 seconds or more = 3 vibrate = force shut down
Click to expand...
Click to collapse
A hard reset restore to factory settings and clear the device. That is NOT what happens.
The installation guide only mention 10 seconds and that was a restart as far as I remember. Don't have the device with me, to test.

pmeinert said:
A hard reset restore to factory settings and clear the device. That is NOT what happens.
The installation guide only mention 10 seconds and that was a restart as far as I remember. Don't have the device with me, to test.
Click to expand...
Click to collapse
just tested on my Z2 tablet, seems like sony changed how things work with V up + power
Holding down:
volume up + power button = ~1-3 seconds = 1 vibrate = reboot/hard reset no longer reboots. to force reboot: just open the flaps and click on it the little button.
volume up + power button = ~1-2 seconds or more = 3 vibrate = force shut down

LitoNi said:
just tested on my Z2 tablet, seems like sony changed how things work with V up + power
Holding down:
volume up + power button = ~1-3 seconds = 1 vibrate = reboot/hard reset no longer reboots. to force reboot: just open the flaps and click on it the little button.
volume up + power button = ~1-2 seconds or more = 3 vibrate = force shut down
Click to expand...
Click to collapse
You are right about power off. This time the little red button also did that for me. Anyhow, as long as I can reboot and enter recovery or fastboot I am fine. Then I can always wipe what I want, if factory settings and clearing the device are needed.

pmeinert said:
You are right about power off. This time the little red button also did that for me. Anyhow, as long as I can reboot and enter recovery or fastboot I am fine. Then I can always wipe what I want, if factory settings and clearing the device are needed.
Click to expand...
Click to collapse
"volume up + power button = ~5 seconds or more = 3 vibrate = force shut down"
Can someone advise me the procedure (if it exists) to recover from the force shut down?
It seems I've done this trying to get to recovery and now can't even get to the sony logo despite hitting the red button. I hope I haven't destroyed my tablet, as I need to get to recovery and restore a backup after wiping system to try an ftf flash that failed.
Thanks
erosco

This is from memory and on phone. If you hold volume up while connecting USB to a computer, you should enter fastboot and issue a fastboot command on the computer to reboot, recovery, flash etc. Look up Android and fastboot for the exact syntax.

pmeinert said:
This is from memory and on phone. If you hold volume up while connecting USB to a computer, you should enter fastboot and issue a fastboot command on the computer to reboot, recovery, flash etc. Look up Android and fastboot for the exact syntax.
Click to expand...
Click to collapse
Did try this - but no joy.. thanks
---------- Post added at 07:31 AM ---------- Previous post was at 07:23 AM ----------
erosco said:
Did try this - but no joy.. thanks
Click to expand...
Click to collapse
Finally found a way out!!!!!!!
BladeRunner said:
fwiw My Z2 tablet went dead after I tried flashing a prerooted zip. NO response to any key combinations, no lights, no vibrations and computer wouldn't recognize it at all. Tried charging over night, nadda. Did a chat with Sony support and was told to hold the on/off/reset switch by the sd/sim card for 120 seconds. I did that and when I plugged it back on the the charger my tablet was back. I was able to boot into recovery, flash a known good zip and I'm back up and running.
Click to expand...
Click to collapse
Can't thank (you both) enough!
Regards
erosco

Related

[Q] What key combination make RAZR reset?

Most of non-removeable phones provide key-combination reset.
For example,
===============================
iPhone = Lock +Volume+Home (3 keys Long press)
Galaxy Tab = Lock long press (about 8 sec)
===============================
But, no one knows about Razr reset key combination.
What combination key make a Razr reset?
As we know, android and all os are non-stable.
So we should know RAZR reset key.
hehe...
How to reset - Droid RAZR reset combo
Please hit thanks if i was of any help (it'll only take a sec )
That's the first question i asked after price! Lol
This is what I've been told. I didn't have any issues so i didn't required a reset.
Combination = sleep/wake button+volume up+volume down
You need to press all three buttons at once and hold down (abt 10sec)
daizazz said:
Please hit thanks if i was of any help (it'll only take a sec )
That's the first question i asked after price! Lol
This is what I've been told. I didn't have any issues so i didn't required a reset.
Combination = sleep/wake button+volume up+volume down
You need to press all three buttons at once and hold down (abt 10sec)
Click to expand...
Click to collapse
Thanks for that but my question would still be... are you sure if this would work at any point while using the phone... be it the initial dual core screen or when its booting up or when its stuck somewhere during use... i think thats what ppl are worried about because at times the battery pull is the only way...
I think on all samsung devices holding the power button for like 10-15 seconds resets the phone but a few times on my SGS during a bad install and i was stuck in the DOWNLOAD option, only a battery pull solved it... nothing else...
daizazz said:
Please hit thanks if i was of any help (it'll only take a sec )
That's the first question i asked after price! Lol
This is what I've been told. I didn't have any issues so i didn't required a reset.
Combination = sleep/wake button+volume up+volume down
You need to press all three buttons at once and hold down (abt 10sec)
Click to expand...
Click to collapse
Thanks for your answer.
Its perfectly reset worked!!
Just to clarify, it is Power button + Volume Down only for 8 Seconds to reset. Don't need to press both volume buttons.
RogueX5 said:
Just to clarify, it is Power button + Volume Down only for 8 Seconds to reset. Don't need to press both volume buttons.
Click to expand...
Click to collapse
Very thanks for accurate information.
Do you guys have your phones already????
droid Razr reset
RogueX5 said:
Just to clarify, it is Power button + Volume Down only for 8 Seconds to reset. Don't need to press both volume buttons.
Click to expand...
Click to collapse
Thanks for the correction!
I can't believe the Motorola sales dude told me incorrect info.
fail!
( actual Motorola sales person, not a carrier sales person)
When I use the key combination on my new Razr, I get a screen that says fast boot, and
Device is Locked. Status Code 0
Battery OK
Ok to Program
Connect USB
Data Cable
but I cant select anything or move forward. Any thoughts?
ADHurt said:
When I use the key combination on my new Razr, I get a screen that says fast boot, and
Device is Locked. Status Code 0
Battery OK
Ok to Program
Connect USB
Data Cable
but I cant select anything or move forward. Any thoughts?
Click to expand...
Click to collapse
You held down the volume button as it booted, and entered fastboot mode. Do the same thing again, reset the phone with the power +vol down buttons, let go immediately after the screen goes blank.
thank you for this info
let me try to clarify....
Possible combinations:
Power OFF:
a) power button (1sec) = normal boot
b) power button + vol down = fastboot
Power ON:
a) power button + vol down = shuts down
??
To fastboot mode: hold POWER+VOL_UP+VOL_DOWN
Battery pull: hold POWER+VOL_DOWN
Sent from my XT910 using Tapatalk
elias.parasini said:
To fastboot mode: hold POWER+VOL_UP+VOL_DOWN
Battery pull: hold POWER+VOL_DOWN
Sent from my XT910 using Tapatalk
Click to expand...
Click to collapse
what the heck is a battery pull?
R3dbeaver said:
what the heck is a battery pull?
Click to expand...
Click to collapse
Lool.....are you serious. Read that message again. Battery pull is switching your phone off. (the same effect as pulling your battery out if you Get stuck or freeze).
I'll dumb my message down a bit more..umm...you know what I cba
Good luck
Xperia x10(Feralabs Rom) After trying all roms it was my Fav.
Now on the RAZR.
I see you Drinking that ¥Hater raid¥
MattyOnXperiaX10 said:
Lool.....are you serious. Read that message again. Battery pull is switching your phone off. (the same effect as pulling your battery out if you Get stuck or freeze).
I'll dumb my message down a bit more..umm...you know what I cba
Good luck
Click to expand...
Click to collapse
well thats what it literally means... the way some posters here are talking, literal is not always the correct answer
and fastboot is all 3 buttons? not just PWR+VOLDOWN like some earlier posts claim?
ps: whats "cba"? no, i dont know what you "cba".

phone freze issue

Today whilst I was out shopping I went to listen to my music which started fine then I tried to go back to the home screen whilst the music was playing (I have done this numerous times without any issue) and without warning the music stopped and the phone 'froze' I tried to hold the power button to force it to shut-off but it didn't work then I tried the soft reset (Vol Down + Power) but that didn't work I then tried vol up + power also didn't work, I avoided the hard reset (vol down+power+camera) because I was not at home and didn't want to muck anything up so out of chance I tried Power+Camera and within 10secs it was rebooting. The funny thing is I cannot find anywhere that explains what Power+Camera does so does anyone on here know?
I have this as well. While listening to music the phone will freeze completely. On mine, however, it works with only pressing the power button. Hold it for about 10-20 seconds, and it reboots.
_Madmatt said:
I have this as well. While listening to music the phone will freeze completely. On mine, however, it works with only pressing the power button. Hold it for about 10-20 seconds, and it reboots.
Click to expand...
Click to collapse
Then maybe when I tried just the power button I didn't hold it down long enough and then when I tried with the power+camera it ignored the camera button and only registered the power button and that time I held it down long enough for a reboot
Gavincol78 said:
Then maybe when I tried just the power button I didn't hold it down long enough and then when I tried with the power+camera it ignored the camera button and only registered the power button and that time I held it down long enough for a reboot
Click to expand...
Click to collapse
That's possible. I have never tried power+camera. Don't know if it is a key combination with an actual meaning... (With meaning I mean for example power+vol up+camera = hard reset)
Just had mine go that was downloading Zune music and playing at same time. Hold power off for 10 seconds and reset good as new.
Sent from my Lumia 800 using XDA Windows Phone 7 App

Phone bricked without ROOT

Hey guys wondering if anyone experienced the phone being basically bricked without actually unlocking, rooting or anything.
It has happened before one, just laying on the table and the phone turning off but it came back on after a while.
Today it occurred again but has not turned back on for two days. When charging the only light is the LED flashing constantly every second. If I hold the power button and volume up then the flashing of the LED changes pace to One long flash (1 sec) to two quicker flashing ones (.5 seconds). If I unplug it and plug the phone back, The LED flashing is back to the original constant pace.
When unplugged sometimes holding the power and volume up button initiates the LG logo and then turns off and then shows the logo once more and then turns off for good.
If I plug this into the computer, its like someone ejecting a usb and plugging it in like a maniac. I heard the connecting and disconnecting sounds from windows nonstop like as if its about to blow up.
I've tried holding the power button for a minute the same goes with different combinations with the volume buttons.
The only thing I haven't tried is opening the phone, kind of afraid I will mess it up. Any solutions?
djrish said:
Hey guys wondering if anyone experienced the phone being basically bricked without actually unlocking, rooting or anything.
It has happened before one, just laying on the table and the phone turning off but it came back on after a while.
Today it occurred again but has not turned back on for two days. When charging the only light is the LED flashing constantly every second. If I hold the power button and volume up then the flashing of the LED changes pace to One long flash (1 sec) to two quicker flashing ones (.5 seconds). If I unplug it and plug the phone back, The LED flashing is back to the original constant pace.
When unplugged sometimes holding the power and volume up button initiates the LG logo and then turns off and then shows the logo once more and then turns off for good.
If I plug this into the computer, its like someone ejecting a usb and plugging it in like a maniac. I heard the connecting and disconnecting sounds from windows nonstop like as if its about to blow up.
I've tried holding the power button for a minute the same goes with different combinations with the volume buttons.
The only thing I haven't tried is opening the phone, kind of afraid I will mess it up. Any solutions?
Click to expand...
Click to collapse
Never heard of this but I can throw a few suggestions out. Try unplugging, then holding both Volume buttons and the power button (All three) for about 10 seconds. Try different USB ports.
Try this if all else fails: Source: http://cellphoneforums.net/lg/t348484-perform-master-hard-reset-lg-optimus-g.html#axzz2YPtvkfDk
To Perform a Master Reset via Hardware
1. Turn off your device.
2. With the device turned off, press and hold the Volume Down key as well as the Home key at the same time.
3. While both the Volume Down key and the Home key are held down, press the Power button.
4. When the LG logo appears, release all the keys.
5. Scroll to and highlight wipe data/factory reset by pressing the Volume Down key. Then press the Power button.
6. Scroll to and highlight Yes – delete all user data by pressing the Volume Down key. Then press the Power button.
7. As soon as the wipe has been completed, press the Volume Down key to scroll to and select wipe cache partition. Press the Power button when ready.
8. As soon as the wipe has been completed, press the Power button to select reboot system now.
9. The master reset should now be successfully completed and your LG Optimus G should restart.
Tried three buttons, nothing yet..As for the hard reset the home button is touch screen so not sure if it would would for this device
djrish said:
Tried three buttons, nothing yet..As for the hard reset the home button is touch screen so not sure if it would would for this device
Click to expand...
Click to collapse
What is your computer reading it as?
Sent from my LG-E970 using xda app-developers app
I have no idea, when I plugged it in and check device manager, its constantly refreshing as its connecting and disconnecting the phone very fast. Is there another way to check
djrish said:
I have no idea, when I plugged it in and check device manager, its constantly refreshing as its connecting and disconnecting the phone very fast. Is there another way to check
Click to expand...
Click to collapse
Anyways, doesnt matter guys thanks for trying, decided to just go in att and buy a samsung s4

Turn off without screen

Hi
Crushed my screen and need to shut down the phone. Anyone know what to do?
Screen is currently not working at all, just showing some blue spots.
Pushing the power button for 10-15 seconds just make the phone restart.
I have also tried to shut down with various modes of Volume +/- while pushing power button, no luck.
Anyone have an idea here?
Appreciate anything.
Thanks.
eiriksen said:
Hi
Crushed my screen and need to shut down the phone. Anyone know what to do?
Screen is currently not working at all, just showing some blue spots.
Pushing the power button for 10-15 seconds just make the phone restart.
I have also tried to shut down with various modes of Volume +/- while pushing power button, no luck.
Anyone have an idea here?
Appreciate anything.
Thanks.
Click to expand...
Click to collapse
If you can get adb running you could always run (in cmd prompt) :
adb shell shutdown
ante0 said:
If you can get adb running you could always run (in cmd prompt) :
adb shell shutdown
Click to expand...
Click to collapse
Not possible, the screen is completely inactive.
Need to find the "button" to push for 20 seconds so it gets turned off, not restarted as it does now.
eiriksen said:
Not possible, the screen is completely inactive.
Need to find the "button" to push for 20 seconds so it gets turned off, not restarted as it does now.
Click to expand...
Click to collapse
Ok. When booted, plug in usb from computer.
Hold power and volume up until phone vibrates, release Power button.
Keep holding volume up for about 20 seconds (this should be a lot faster with bootloader locked) then release volume up.
Wait for another 10 seconds to be safe.
(If you hear it connecting to computer it's not actually done booting to eRecovery yet)
Now, click on Volume down twice, then power. Device should now shut down.
ante0 said:
Ok. When booted, plug in usb from computer.
Hold power and volume up until phone vibrates, release Power button.
Keep holding volume up for about 20 seconds (this should be a lot faster with bootloader locked) then release volume up.
Wait for another 10 seconds to be safe.
(If you hear it connecting to computer it's not actually done booting to eRecovery yet)
Now, click on Volume down twice, then power. Device should now shut down.
Click to expand...
Click to collapse
Excellent, thanks.
This seems to have worked, are no more blue spots left on the screen, so believe it to be shut down.
God lørdag fra Oslo
just wait until the battery dies
ante0 said:
Ok. When booted, plug in usb from computer.
Hold power and volume up until phone vibrates, release Power button.
Keep holding volume up for about 20 seconds (this should be a lot faster with bootloader locked) then release volume up.
Wait for another 10 seconds to be safe.
(If you hear it connecting to computer it's not actually done booting to eRecovery yet)
Now, click on Volume down twice, then power. Device should now shut down.
Click to expand...
Click to collapse
I had to press the volume down three times to reach the power off option
SlimShady1972 said:
I had to press the volume down three times to reach the power off option
Click to expand...
Click to collapse
It depends on android version. Pie has a new entry in eRecovery

Question Sideload Issue

Sideloading latest update to Pixel 6, got to "reboot" phase and rebooted. This time another "reboot" option came up "cancel, latest update failed to complete". Without thinking I "rebooted" and now have a phone sitting here with a black screen and the word "Google" in bright colors. It has been this way for over an hour and doesn't respond to any button presses.
1st time in this situation - suggestions appreciated - 1st time posting here - hope I did it right
Enter recovery and flash the full factory image using adb.
Hold power button for about 30 sec.
Thanks for the replies
Phone seems to be locked - no response from any button, or button combo pushing - have tried all.
I think this phone is bricked
BChat said:
Thanks for the replies
Phone seems to be locked - no response from any button, or button combo pushing - have tried all.
I think this phone is bricked
Click to expand...
Click to collapse
I think you have to hold the power button until it hurts your finger. That's what I have to do on my Fossil to get it to come back on when it dies. Make sure it's plugged in also.
I held the power button and several other button combos - nothing - phone is dead - new one ordered - thanks for the replies.
BChat said:
I held the power button and several other button combos - nothing - phone is dead - new one ordered - thanks for the replies.
Click to expand...
Click to collapse
Mine was sitting at the Google screen yesterday too after flashing some modules, this is the only way I got out of it and into fastboot. Might be too late for you but maybe it helps someone else since JUST holding Power Up doesn't do anything.
Power + volume up should shut it down
When the screen goes black press power and vol down, that'll bring you to bootloader.
When it was at the "GOOGLE" screen I tried power + volume up, power + volume down, just power, just volume up, just volume down - nothing.. At this point I declared the phone dead and took the screen off . This was my 1st time taking a cell phone apart.
I appreciate all the replies I got to my situation, lots of knowledge on this forum

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