S6 phone won't allow me to turn on the call waiting feature.

[AC Question]

I go to the settings section and when I try to slide the button to on position it displays updating settings then stops and reverts back to off position. Has anyone else had this problem before?

 

[srkmagnus]

I don't see anything specific to this issue and the S6. However, it could be a network issue. The a look at this thread: http://forums.androidcentral.com/showthread.php?t=390742

Although that's a disconnecting problem, I suspect the same issue is occurring with you. What network do you have?