i do not really have what you may call an onboard navigation gps system that you see on new vehicles now but rather, i have the handheld garmin gps III plus. its a rather old model but still functional

unfortunately, wala pa akong nakitang city map of any city in the philippines that you can upload.

the map i am using now is the WGS 1984 geographic survey and its accurate to about 80% of provincial roads in the philippines, or least what is reflected in the map. if you are looking for nlex or slex, forget it

likewise, if you are looking for specific city streets, forget it also

i mean, great sayote of zapote, even my waypoint of picc and the other buildings nearby including the senate are on the water, mwahahahaha :D

perhaps buti nga nasa ilalim ng tubig yung senado natin but that is another topic. eh hehehehehe

anyway, i have tried using this as far as baguio, candon, cebu, negros and panay and with the provincial roads, okay so far