Back in the early 2000s, "Nate Drive" (네이트 드라이브) brought navigation to feature phones. With certain phone models, purchase an accessory GPS antenna and navigate via real-time traffic updates. This app would become today's T-Map.
Watch it in-action on a road test back in the day: https://www.youtube.com/watch?v=thCcKbIx6iY
LG-SV900 Nate Drive 로드테스트(1)
폰내비, 폰네비http://review.cetizen.com/LG-SV900