From TrekBuddy Wiki
I'm using TrekBuddy on my mobile phones while hiking, skiing etc. and to find POIs in cities (shops, homes of friends etc). I try to help to make the wiki a sufficient, efficient and helpful source for TrekBuddy users.
I use Nokia E75 (Symbian Series 60 3rd edition) with Bluetooth GPS Receiver i-Blue 737. Outdoors, I often use an Ortlieb waterproof see-trough bag. I have been using the Siemens SXG75 with build in GPS receiver until it broke 2008 and afterwards a Nokia E70 until 2010.