Smith, 6-foot-3, 180 pounds, was so comfortable with the Sun Devils he decided to make the pledge a week ahead of his plan to visit the Tempe campus.
"I've known for about a week," Smith said. "It's just a real comfort with the coaches and also I feel like it would be a great place for me as far as my education and football together."
Smith switched from wide receiver to quarterback as a junior and will again play quarterback as a senior, but the Sun Devils are recruiting him as a wide receiver. He is the No. 110 wide receiver prospect nationally and No. 19 in Texas.
"I watched their games last season and liked how they used Jaelen Strong," Smith said. "He's a really good receiver and I feel like I can go there and try to make an impact at the position.
"I haven't talked with coach (Todd) Graham yet but I talked with coach (Mike) Norvell and coach (Del) Alexander," he said, They were really excited for me and said they are looking forward to coaching me and it's going to be a pleasure."