Iphone will not connected to the Internet (cellular data) if vpn is turned off?

My iPhone 6, iOS 8 won't connect to the cellular data if I turn off vpn. I tried seething the Vpn profile, I tried restarting I even tried restoring to factory network setting nothing seems to work.

First of all lets check your settings. If you can't connect to a cellular network, make sure cellular data is set to on by going to Settings > Cellular, and making sure the slider is in the right place. Are you on a trip? If you're traveling internationally your iPhone needs to be set up for data roaming. Go to Settings > Cellular > Data Roaming, and check that you are set to on.