I don't know why but it only happens with the dialer App and not always,sometimes.
It never happened with 3.4 but a few times with 3.6 and above.
Before you take the call there's a black screen and when you finish talking it gets black again for a few seconds.
I wanted to ask KitKat users,is the ram management better?
With stock Jellybean and Dori's kernel I get 600MB free ram in the best scenario while I have a ton of Apps greenified and no location services on.
I see that Apps like radio,messaging,quick remote and a few more run all the time in the background while I try to kill them regularly with Task manager but after a few minutes the same story.
What reserves all that RAM?
I tried converting all the above Apps to user Apps from system Apps with Titanium Backup but unfortunately for the specific ones I don't get that option