Only had my Doogee DG580 for a week or so now and have already hit an obstacle. All of my bottom row of 'fixed' icons (dialer, messaging, etc) seem to have disappeared and I can't figure out how to get them back. Kinda a pain cos I have to go the long way around to make a call! I've searched this forum, but all solutions seem to be for older versions (mine's 4.4.2 Kitkat). Any help greatly appreciated. Want to find easier way before resorting to a factory reset.