Seeing iPhone
Similar to the well known 'seeing-eye dog' a seeing iPhone is a friend, associate, lover, etc who you grab onto for guidance through the perils of the city while your attention is focused on your iPhone or other mobile device. They will kindly shepherd you around obstacles, other pedestrians and cars while insuring you don't wander into an intersection.
"Hey honey, be my seeing iPhone while I look up directions to the theatre. I don't want to walk into a sign."