To quote Verizon, "Can Verizon Wireless Change This Agreement or My Service? We may change prices or any other term of your Service or this agreement at any time, but we'll provide notice first, including written notice if you have Postpay Service. If you use your Service after the change takes effect, that means you're accepting the change. If you're a Postpay customer and a change to your Plan or this agreement has a material adverse effect on you, you can cancel the line of Service that has been affected within 60 days of receiving the notice with no early termination fee".