My new Certified Pre-Owned LG G3 is constantly being unresponsive while "sleeping". Plugging it in tends to wake it up finally but if it won't turn on when I'm out I'm basically carrying a shiny brick. Useless. I protect it with an iThrough waterproof case since I'm in construction and don't want condensation inside the case like my last otterboxed iPhone. Could the case effect anything?