After high school, Phillips went on to play college football at the University of Illinois. During his time there, he played in 33 games over three seasons and recorded 135 tackles, 14 tackles for loss, one interception, and three pass breakups.

After high school, Phillips went on to play college football at the University of Illinois. During his time there, he played in 33 games over three seasons and recorded 135 tackles, 14 tackles for loss, one interception, and three pass breakups.