Nokia Luma 800 touch not working after lock

Many people on the web have been complaining that touch screen is not working after unlocking their Nokia Lumia 800 phone. You should definitly take your phone to the certified service dealer. If you just need a quick workaround here is what my best man found out. 

Problem:

The problem manifests that after you unlock your phone touchscreen just doesn't respond. After rebooting the phone the screen works again until the screen goes to sleep again. It is very hard to find a solution for this on the web. But it looks like many people have this problem.
Here is the official Nokia/Microsoft forum for this issue. Please try to link this article to the forum and let me know what happens :)
Lumia 800 screen bug
You can also read about the problem here

lumia 800 after unlock touch not responding

Soulution:

But if you are not into soldering you can pres with your thumb top right of the screen while unlocking. It is important to press before unlocking. Then touchscreen should work. Take a look at the picture below

Here is the video showing you the process how to unlock Lumia 800