4 ms·

> constant cellular connection This isn't at all required for music or maps. Phones have up to a terabyte of storage now.

• bobbylarrybobby 3y ago
  It is not theoretically required, but most (all?) phones don't cache all the map tiles between the origin and destination. You'd have to proactively download all the map regions you think you might need.
  • 8ytecoder 3y ago
    Google Maps and Here Maps both support offline (Sygic is another).
  • ascorbic 3y ago
    Google Maps prompts me to do just that when I navigate any kind of distance. Not sure if it's only when driving through areas with poor reception.