Lenovo PHAB 2 automatically activate user data when wifi is switched off I enabled (turning on user data when wifi is turned off) feature and can not disable it again from Device settings after a lot of search.

The only solution I have now is to restore my device to factory, but this is my last choice.Please, any one help me to avoid this.

My device is Lenovo Phab 2 ?
Go to Settings &rarr; Apps settings &rarr; Storage &rarr; Clear Data. This worked for me.