Mapping, navigation, listening to music, playing videogames, music instrument tuner. There are plenty of usages which don't require Internet/Cellular. I often

Mapping, navigation, listening to music, playing videogames, music instrument tuner. There are plenty of usages which don't require Internet/Cellular. I often walk out of home with an old iPhone which doesn't have a SIM card and it does everything that I need it to. The only thing that doesn't work is browsing the Internet or Messaging.