My son wants WHAT for Christmas

My wife, Melissa, and I were talking to our boys (Jack and Max) about what they want for Christmas. My 5 year old proudly announced he'd like he can buy electronics. I asked him what specifically he would like to buy and he said a cell phone, laptop and maybe a new gaming system. Five. He's FIVE. Now, mind you, he's also the first one out the door to play and gets upset when it's time to come in. He just loves to play his games when he's not outside and I suppose I don't see anything wrong with that. My question is, at what age is a cell phone appropriate for a kid? My wife and I disagree on this one and I'd like to see where YOU stand.