Oh, and regarding the purpose of turning on wifi when in flight mode: I often do that to increase battery life. It can be quite helpful if you know that you won't need a network connection or that your phone won't be able to establish a network connection anyway.
Oh, and regarding the purpose of turning on wifi when in flight mode: I often do that to increase battery life. It can be quite helpful if you know that you won't need a network connection or that your phone won't be able to establish a network connection anyway.