WHEN CHRISTOPHER WOOD was a teenager growing up in Virginia, he came out to his parents as gay. They rejected him and kicked him out of the house. As Wood describes it, a cell phone saved him from becoming permanently homeless. It wasn’t a smartphone; it was a flip phone, but it allowed him to contact a friend who found him a temporary safe place to sleep. The way Wood sees it, mobile technology saved his life. Now he’s working to provide the same lifeline to teens today whos