my understanding was all modern phones have gps even without cell service. Outdoor mapping without GPS will be very hard. You might try to position PoI roughly based on the position of streets and other features. Maybe, you can fix the edits later at home using sattelite imagery. Also, try posting this on https://community.osm.org/
my understanding was all modern phones have gps even without cell service. Outdoor mapping without GPS will be very hard. You might try to position PoI roughly based on the position of streets and other features. Maybe, you can fix the edits later at home using sattelite imagery. Also, try posting this on https://community.osm.org/