ZenUI ← Knowledge Base Moving to another server... Why does the screen become black during incoming and outgoing call? How do I change the quick-access apps on my lock screen? How do I quickly charge my phone’s battery? How do I take a screenshot? Why can't I find Google keyboard and Face unlock after Android Kitkat upgrade? How do I access my device if I forgot my lock screen password? When I get calls, why do I sometimes see a swipe bar or two buttons? Why don't I get updates from my Facebook friends on my phone? How do I use conference call with ZenFone？ How do I use 3G only for data transfer to avoid misused 2G, causing high expense? Why can't I see the badge number that should appear on LINE and Facebook apps when I get new messages? [Tips] Uninstall/Disable multiple apps at once [Tips] Open Google Now search bar from anywhere How do I locate a missing device? [Tips] Battery drains fast? Try me !