My apology for such a basic question. I went from a feature phone (dumb phone) to a Iphone4S and learning how to do the basics. One problem came up several times and I’m sure it’s just me needing to learn how to make the phone do what I want it to do. Say I make a call to Joe. I get Joe’s voice mail. As I’m leaving Joe a voice mail Joe calls me back. On my screen I have two options "ignore" or "Hold call + answer". What I want to do is end my current call and answer. My carrier is Verizon. Does anyone know how I would do this? Thank you for your help.