I've issue with my vpn connection on my sony Xperia z2. For example I tested "anyconnection(cisco)" app on my old sony Xperia L and connection was successfully. But not on my Xperia z2. All of my system software udated. Depend on what I searched in web I found out "Force Immersive Mode" was stopping the "I trust this application" dialog box from appearing on my Xperia z2 and it's cause of my problem that I cant access to this dialog box on my Xperia z2. But this dialog box appears on my old sony Xperia (model:number 2105) android 4.2.2. What can I do to resolve this issue?