Missing iCloud Photo Library option
the left image show iphone 6s+ Setting>iCloud>Photos and the right side is iphone 5. both run new iOS 9.2.1. but the iphone 6s+ missing the very important option, which is enable/disable the iCloud photo library. already chat with apple support and called by them. they told me to reset & restore but still missing that option. so they told me that they will call me if the have progress.
is there anyone of you know how to fix it??
iPhone 6s Plus, iOS 9.2.1