Title describes all. I can't make screen to show while on phone call. The screen goes black so (there were some exceptions. But it's random and rare) I tried every button to make screen to display but had no luck (volume works but doesn't make screen to display). Only solution to this problem was to slide open the phone. Anyone else having this issue? Is there any way to make screen to display when it is touched or buttons were pressed? If this is firmware issue, then I wish this would fix in next update. Thanks and have a happy new year!