To try and save on data, I have installed the app "wifi map" as yet, I haven't been able to fathom it out. My understanding is that with data off and wifi map on, it locates the hot spots close to you and even if they are safeguarded by a password, the password is shown, to enable you to join. So far this hasn't been the case. Clearly I am doing something wrong. If you can suggest what, or an alternative to use on my iphone, I would appreciate it, thanks.