Hi, I have a single problem with my new purchased A8, there is no way to switch between front and rear camera. When I start the camera, the front camera is on, but no button/sign to change to rear camera. Please help. Thanks. (Baseband version: MOLY.WR8.W1449.MD.WG.MP.V23.P4, 2016/04/12 20:33) (Kern...