I had a defect in my Samsung Galaxy 6 that required that I replace it with a new phone. It was under warranty so I got a new Galaxy 6 for free, but I am required to return the defective one to Verizon. Before I do so, is there some program I should run to remove all information from that phone? I'm not terribly adept at this, so remedial instructions or a link(s) would be ideal. Thanks