Maybe not exactly what you are looking for, but my husband and I love telling the story to our boys (14, 12, 10) of how he and I would have never met in 1997 if smart phones existed. I was traveling for work to Dallas/Fort Worth area and we had mutual friends who suggested I give him a call, though we had never met. He was game for meeting me for dinner and when I told him where the hotel was at, he said he thought he knew where it was. (He lived in Dallas, I was in Fort Worth.) If he had a smartphone, he would have immediately looked to see where my hotel was, and realized I was on the far west side of Fort Worth and not agreed to go out! (Yes, a 26 y/o guy could have looked at a map, but well, he's a guy.)
Needless to say, he was REALLY late in picking me up, but we ended up having a great time and ended up exchanging numbers/emails (I had just gotten an email address!) and the rest is history.
But again, probably not what you are looking for. If I think of something else, I'll chime in!