Adapted my spare 5.5" smartphone to work as Sat Nav.
- phone rooted
- slimmed version of android installed, all not necessary junk removed for better battery live
- Here Maps, Google Maps (offline) and Co-Pilot (paid) installed, all works with no data required
- lock screen deactivated and screen set to switch on once plugged to power
- bluetooth connected with helmet
- sitting in waterproof case with slot for usb cable, fitted to bracket with 4QuikFix system
Just can't justify spending few hundred quit on dedicated satnav
