I have an odd question about wifi connections. My phone naturally auto connects with my home network. Can I set it up to connect with whatever wifi network I happen to be in the area of if I have the security password or if it's an open network? For example. I leave my house and travel to my sister's house and my phone auto connects to her wifi network? Or I leave my house and go to the library where they have free Wifi. Any info would be great.