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phone not turning on

hello
phone was normal i was using whatsapp and then screen turnedoff (timeout)
after that phone is not turning on
no leds or anything
tried connecting it via usb , it shows in removal disks but doesnt show in my computer
thank you

ancilary said:
hello
phone was normal i was using whatsapp and then screen turnedoff (timeout)
after that phone is not turning on
no leds or anything
tried connecting it via usb , it shows in removal disks but doesnt show in my computer
thank you
Click to expand...
Click to collapse
What happens if you hold power and volum up for 15 sec?(it needs to vibrate 3 time)

[Q][SOLVED] Phone will not respond when trying to update

I have the Xperia T and I am trying to update to 4.3, I had tried to use flashtool, but the phone isn't recognised by the computer when I plug in the cable holding the down button. Now the update is finally here for me I tried using PCC but again having the same issue. I have tried two different computers and all the USB ports on them. I have also fully switched off the battery (holding down the power and up button keys for 10 seconds).
I am stumped as to what is wrong with the phone??
thanks

Can no one suggest anything I could try? I have a feeling its a hardware fault, but it seems like a strange one at that... I dont know if its related but the phone also sometimes doesn't wake from sleep, it seems to be awake but the screen is not on, which requires me to do a hard restart
I am really desperate! thanks

adsada arc said:
Can no one suggest anything I could try? I have a feeling its a hardware fault, but it seems like a strange one at that... I dont know if its related but the phone also sometimes doesn't wake from sleep, it seems to be awake but the screen is not on, which requires me to do a hard restart
I am really desperate! thanks
Click to expand...
Click to collapse
turn of your phone. open flashtool. do not connect the phone to pc. select the firmware and click on flash,. after a few seconds it asks for the phone to connect. the hold the vol - button and plug in the usb. release the vol - button after the green light turns on. this may solve your issue

romeoofair said:
turn of your phone. open flashtool. do not connect the phone to pc. select the firmware and click on flash,. after a few seconds it asks for the phone to connect. the hold the vol - button and plug in the usb. release the vol - button after the green light turns on. this may solve your issue
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Click to collapse
I have tried this, and it still does not work
thanks for the suggestion though

Interesting update (well not really), but I did some troubleshooting and stuff and found that when plugging my phone into the charger when it is switched off, it doesn't respond either (i.e. boot up). So I have a feeling that its the actual phone with a fault such as damaged pin in the usb port that relates to power when the phone is switched off?

adsada arc said:
Interesting update (well not really), but I did some troubleshooting and stuff and found that when plugging my phone into the charger when it is switched off, it doesn't respond either (i.e. boot up). So I have a feeling that its the actual phone with a fault such as damaged pin in the usb port that relates to power when the phone is switched off?
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Click to collapse
I have the same problem.
When the phone is turned off it won't charge, either wiht the wall charger or with the USB cable connected to the computer.
I've sent an email to SONY but they told me so sent it to tech support.
It's not very easy to do it where I am so I'm looking for some other options.
I also noticed it when I was trying to update to 4.3.
PC Companion isn´t a solution since it asks to connect the phone to the PC while turned off pressing the volume down button, even to try the repair.
Can someone help?

Found the issue here http://forum.xda-developers.com/showthread.php?t=2018466
Such a weird problem, but unplugging and reconnecting the battery solved all the issues I was having!
FrankieZero said:
I have the same problem.
When the phone is turned off it won't charge, either wiht the wall charger or with the USB cable connected to the computer.
I've sent an email to SONY but they told me so sent it to tech support.
It's not very easy to do it where I am so I'm looking for some other options.
I also noticed it when I was trying to update to 4.3.
PC Companion isn´t a solution since it asks to connect the phone to the PC while turned off pressing the volume down button, even to try the repair.
Can someone help?
Click to expand...
Click to collapse
Have a look at the thread link above, very simple to solve just take off the back cover and disconnect the battery for a couple of minutes

Screen is just black, but HTC is still on and working Need Help

My HTC screen just went black and I can't turn it off or do anything with it
Holding Power and Volume Down doesn't work either

Then how do you know it's still working?

Because when I plug it into my PC, I can hear the connection sound
But I can't access it from my Pc either

Zalhera said:
Because when I plug it into my PC, I can hear the connection sound
But I can't access it from my Pc either
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Click to collapse
If you go in windows deice manager, is the phone recognized? Does it say QHSUSB_DLOAD?

Phone killed by connecting to pc

Hello, today my phone was hard bricked by connecting to pc...I wanted to boot it up to download mode, but because my mistake i hold power down button and no power up button...then pc starts installing qualcomm_qdload driver or something...but it wasnt installed...i disconnect phone from pc and it wont turn on...its totally killed, it wont power on on charger, or something, only when i connect it to pc i see qdload driver...its that possible?

kiosk123 said:
Hello, today my phone was hard bricked by connecting to pc...I wanted to boot it up to download mode, but because my mistake i hold power down button and no power up button...then pc starts installing qualcomm_qdload driver or something...but it wasnt installed...i disconnect phone from pc and it wont turn on...its totally killed, it wont power on on charger, or something, only when i connect it to pc i see qdload driver...its that possible?
Click to expand...
Click to collapse
Try this hard reset https://forum.xda-developers.com/lg-l90/general/guide-unbrick-hard-bricked-l90-variants-t3173429

Need help with possible bricked device !

Hi, yesterday my phone hangs on using apps and won't react to anything. So i have done a hard power off with power+vol up. Next i tried to start the device again and nothing The device won't start into any mode (system/bootloader/flash) and no lights etc. So i checked some threads in net and tried to plug in charger over night. Today behaviour has changed a little bit. When connecting to pc device is detected as usb device with error in getting description. This is the only reaction of the device. Again doing a hard power off etc. won't work (also no vibration).
Has anybody had same behaviour and could fix it ?
System is unlocked and was running with cm12.1.
Before you ask: pcc etc. also won't wark cause usb-connect won't work corectly.