Here’s an annoying issue that iPhone users are all too familiar with: You’re surfing the web on a Wi-Fi connection that your device automatically hopped on – at home, in a public place, or at work – and all of a sudden the app you’re in tells you it can’t load something because you don’t have an Internet connection. Yet you do! After all, you’re paying your wireless carrier every month for a mobile data plan on its 4G network… and yet your phone won’t automatically switch to that. Enter iOS 9, which will change all that.
Read more here:: Boy Genius Report