Often, when I am on a phone call, I open another application, say a browser to look up a fact or a dictionary to check on a question. When it's time to hang up the phone, I find it very difficult to find the 'hang up button' again. If I open a new phone window, all I see is the 'call' button, not the 'hang up' icon. If I press the escape button, I never get back to the phone app again. Help! A couple of apps say that they will hang up for me if I 'flip the phone' but I don't know what that means. Turning the phone 90 deg. does nothing.