I recently started using my iPhone in conjunction with my Nuvi 2595. The Nuvi gives me a visual reference, but the bluetooth won't connect with my Sena. I installed Google Maps on my phone, which allows me to map my routes in 10-point legs and get audible turn by turn directions. I map the routes on my computer and e-mail myself the links. I always try to end a leg at a gas stop, then select the next leg before I get on the road again. It's worked pretty well so far. Google Maps also gives the option to download portions of a map and get turn by turn directions even if you don't have a signal. Haven't had the opportunity to use that feature, yet.