My iPhone 4 which I got in August 2012 started acting up about 10 days ago. At first the screen went black and I had to do a soft reset and since then I will have perfect service and it will drop the call. This evening it dropped my call 6 times! Is there anything Verizon can do or do I have to get a new phone? I don't have any type of protection plan and I'm not due to upgrade until August.