Before revision: Some PNA devices are PDAs with limited features and can be unlocked.See here how to " unlock " Mio made PNAs History The earliest PNAs were hand-held GPS units (circa mid-1980s) which were capable of displaying the user's location on an electronic map.
After revision: Some PNA devices are PDAs with limited features and can be unlocksed.See here how to " unlock " Mio made PNAs History The earliest PNAs were hand-held GPS units (circa mid-1980s) which were capable of displaying the user's location on an electronic map.