Apple released the iOS 9 on 16 September with bundle of new features and wallpapers. People are amazed with new features but they are not aware of how one of the new feature can double their bills for those on Limited Data Plan. Check below how to disable this feature.
1. Open Settings.
Below settings find Cellular.
2. Disable the option which says WIFI Assist.
Tadda you saved your self from high bills which you may have received with this option enabled.