Hello, SEE VIDEO: http://www.youtube.com/watch?v=KuR3QUh5F2o When i make a call, the screen truns black. I can't hang up etc. Also when someone's calling me i can't press any button for like 30 a 40 sec, then sometimes i can hang up I tried a factory reset from recovery mode. i tried speed kernel mod, i tried lagfix. Flashed it with different firmware versions etc. nothing solved my problems. Sometimes the force close of phone.android.com comes up. Also send my phone to Samsung, they did not want to fix my problem, they said it was a Liquid Damage, but i think that's what they always say. Does anybody have an idea what could be wrong? The rest al works fine.