Generally to restart your phone, simply press and hold the Volume Down button and the Power button for 10-12 seconds, until you feel the phone vibrate. This should restart your phone without deleting any of your data or apps.
Nokia Lumia 720 dead. Cant turn on. screen all blank.
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Anonymous
Help! My dad's nokia lumia 720 turned off unexpectedly after charging it. After it got to full charge i unplugged it and left it on the table. When my dad went to use it it didnt respond: the screen remained black een after pressing the lock button. We even tried a soft reset but then we worked out that it wasnt even on and it was dead. We couldnt turn it on either.... After that i plugged the phone into my pc and used the windows phone app to check status of the phone. it showed that it was charging! I thought that the phones couldnt charge when they are off! Anyway, there are no lights coming of the windows key, the back key or the search key....Please Help!!
Windows for home | Other | Devices and drivers
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Anonymous
Answer accepted by question author
Anonymous
Hi 413x4nd3r H03k!
Thank you for writing on the Windows Phone 8 forum.
If I have understood the issue after you put on charge your Lumia 710 it hasn’t worked any more.
Are you sure your phone has been charged. It is behaving like the battery is totally discharged.
If you keep having the same problem tough you have left the phone on charge for several hours I would suggest you to try the steps which are described on the following link.
http://support.microsoft.com/kb/2749480/en-us
Goodbye, Salvatore S.
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Anonymous
2013-09-17T06:08:48+00:00 My phone ,Lumia 720, has remained dead for now almost 12 hrs. It is not responding to any of the given solutions. What should I do now??
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Anonymous
2013-09-17T11:23:49+00:00 Send or bring it in for repair/replacement
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Anonymous
2013-09-17T17:30:40+00:00 I have the same problem with the lumia 720.
I just make a call and put my phone after the call ended. When I try to unlock my phone to make another call, It stop to respond.
What i can see was the only it's Clear black display.
Till phone stop respond, Battery was 97%, no background app was running, Phone memory is free upto 3GB
I just use soft reset and then it start responding.
It not matter that phone stop respond but matter is how many time i have to do soft reset, because my phone stop responding up to 5 times in just 1 month. Can any one tell me reason why it happen? Should I replace the phone?