Lumia 930 blank screen during call

My Lumia 930 screen goes blank during all calls. Iti is black whether the phone is next to my ear or not. In practice I cannot end a call or do anything else cause the screen keyboard is not available.
My son has a Lumia 920 which had very much the same problem but it was somehow fixed when the device was at Nokia service last year because of some camera problems. No idea still about the root cause of that case either.
Any idea how to fix my blank screen problem?

I have the exact same issue with my brand new Lumia 930 - the screen goes black (a bit randomly) when talking on the phone. I used a trick decribed in a post with the same issue on a 920, which is to firmly wipe just above the N in Nokia in the top right corner on the phone (where the sensors are) which helps. However, it is not really fixing the problem.
Is there anybody knowing another solution but to return the phone, which feels a bit cumbersome to say the least?
Thanks,
Erik

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Hi ausrius517,
Sorry to hear you are having a problem with your device.
Have you tried performing the following resets to see if it will solve your issue:
Soft Reset - this will not delete and data off your device.
Enter *#7780# into your phone's keypad and when prompted, enter 12345 (default code)
If there are not too much data on your device and you have made a backup, you can go for the hard reset option below.
Hard Reset - this will wipe all data off your device, so a backup is recommeded before doing this.
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Lumia 800 constant blank screen during calls

hi guys,
I have a nokia lumia 800,
when im on a call the screen stays blank so i cant access any of the in call options? i dont have a screen protector on the phone, i have run the diagnostics app and the the proximity sensor is responding fine!!! so it leads me to think its a software issue? is this a common problem or am i doing something wrong?
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The screen gets turned off during a phone call when the proximity sensor is covered. This is done to avoid accidental touch screen actions when you are in a call.
If the screen gets turned off immediately when dialing a number or receiving a call, check that your phone does not have any object which may cause detection. There are various non-Nokia original screen protectors sold in the market which cover the proximity sensor causing blank screen issues during calls.
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Make or receive a call with the phone.
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Iphone 3g blank screen during calls

I bought a 3g last week to replace an original iphone that had stopped working. Everything seemed to work on the new phone except that during calls the screen would go blank and I could not get it back by holding it away from my ear, hitting the Home button, or anything else except the on/off button at the top, which ended the call. I was on the phone with apple tech support for several hours, trying all sorts of things that didn't solve the problem.
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Iphone blank screen during call

I have developed a problem with my iphone over the last few weeks. When I make a phone call the screen blanks out as expected during the call however if I take the phone away from ear to end the call/use keypad etc the screen will not come back? Is anyone lse is experienceing this issue? is there a way to fix it?

Remove the case from your iphone and see if that resolves the issue.
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I performed system update some time ago (2 or 3 weeks) and left my computer unused. Today I tried to power on it and I was very surprised, because I didn't see anything on screen during boot and after it. I rebooted computer in fallback mode (I also added "i915.modeset=0" to kernel init args), and I saw command line. Then I updated whole system and rebooted it again - no luck again blank screen during boot and after.
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Black screen during calling with the lumia 930

I just received the lumia 930 a few days ago. Perfect device however every time I want to make a call the screen goes black. I had a lumia 920 without this problem. Is there a solution? (without blowing the dust, restoring to factory settings or bringing the device back to the store?). This is such a devastating problem as it is almost impossible to just answer the phone. A have no protective cover etc.

Eath4306, so difficult to say.
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Today I go to the store and service Nokia - print up photos with the problem of purple. I wonder what they will do. I reported this problem also for Microsoft / Nokia.
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On Thu 6/10/2010 7:17:42 AM your computer crashed
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product: ATI Radeon Family
company: ATI Technologies Inc.
description: Central Memory Manager / Queue Server Module
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yes, this would explain the error.
Hum, you probably need to send the laptop in for service.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

Lumia 930 blank screen during call

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