Verizon iPhone 6 users: In the past, I've been able to go to settings/phone/call waiting and turn it on or off. With my i6 & Verizon, when I go to the phone settings page, there is no longer a Call Waiting area. I am about to get on an important conference call and don't want to be disturbed. Also, I tested the Do Not Disturb feature but calls still beeped through. That's a pointless feature. Is dialing *70 before a each call the only way to disable call waiting now?