Yeah, it's really cool that it does that. I've gone through no several no-service areas since I got the 5 and it continued to route with no problems. Very nice feature indeed. I was assuming it wasn't going to do that before I bought the phone, so it was a nice surprise.I was aware of the maps caching, which I thinks a great idea. I didn't know if it would still route you even under lose of signal, that's also a good feature.