Along with the many, many, many things that Windows Phone 8.1 brings along, there’s also a much smarter “Wifi Sense” feature, which like Data-Sense, helps windows phone users with their internet connection.
Wifi-Sense allows users on WP8.1 to join WiFi Hotspots without having to manually accept any terms & conditions or enter any personal details like their Name, or Phone Number, etc. This is mostly useful incase of public Wifi, where some brands, like Starbucks, require you to accept their terms before joining, or in places like here in India, submit your name, email address and phone number before you’re able to use the free wifi. Here’s a quick video showing that off.
Windows Phone 8.1 will also be able to share your Wifi network information with your Outlook, Skype, or Facebook contacts so that they can access the internet connection without having to share the password with them.