Originally Posted by ysbrand

I don't want to start a smartphone versus dedicated cycle-computer discussion and I very well understand why for some people a dedicated Garmin eTrex is the better solution. But for those of you that think a phone might do the job: it does for me. Note: I only use it for navigation and track logging, not for measuring heartbeats and cadence.

I use an old Galaxy S4 (100 US$ on eBay) plus a supersize battery (30 US$ on eBay) which will make the phone run for three days.

Tracks I prepare off-line using Google Maps, and then I upload the resulting gpx-track into my phone. The phone has OsmAnd with all maps downloaded so I don't need internet while biking.

For more detail, I wrote a small tutorial, here:

https://zwartwit.galama.net/posts/20...ke-navigation/