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.
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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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
2013-09-26T17:38:37+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?
Same problem for me. I try to call nokia but they dont support my IMEI in my country. So I have no solution for a 1 month Lumia 720. What should I do? Still no Amber when I check the updates?Is it because this model is not for sale in my country?
-Press and hold both the volume down button and the power key for 10 seconds-->does that this is the only solution for this problem?
Please let me know thank you!
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Anonymous
2013-09-27T16:57:44+00:00 from which country you belong? I got Amber update yesterday. There are few new features added. There is no other way to restart your phone. Volume down key and lock key at same time until your phone vibratthe apps and game whice. Nokia reporting that it happens because of app crash. There is 1 solution, uninstall all h you dont like to use, always download app or game from Nokia or Microsoft or Xbox or any good publisher. Any way though I like to give it 10 out of 8 point because in Nokia Lumia market 720 is the most beautiful phone.
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Anonymous
2013-09-27T22:28:35+00:00 Im in canada and You?