Cellular Data for some apps not working
My Cellular data is always on. I only turn off for some apps that I don't need it on to save data. Occasionally I turn it on if needed. After I updated to iOS9, Cellular data can't be turned on for any Apps that were turned off at the time of the update. i.e., I had Data on for Safari and yelp only. Those remain on. If I try to turn on Data for Facebook, ebay, or just about any other app that had been off, the button does switch over to "on". When I go try to use the app, it says no connection.
Then I go back to Cellular Data to check if its on and it switches back to OFF.....
Any input on how to fix this issue is greatly appreciated.
Thank you
iPhone 5s, iOS 9