Does anyone know what the cheapest voice plan for ATT is? I currently have 750 minutes which I don't need because I have a ton of rollover?Does anyone have a plan with like 500 or 250? I also have free mobile to mobile. Is this necessary with the addition of FaceTime audio? Unlimited data (grandfathered) and unlimited text. Trying to find a way to cut my bill to the bare necessities. Thanks!