Minimise battery drain:
You might get reasonable location information from the cell phone towers, so you can turn the GPS chip off.
Alternatively if the phone is out of contact or near it (2 or less bars) then turning off the phone mode will help a lot (set 'aeroplane' mode on). If you then need to locate yourself you will have to turn on the GPS chip. Aeroplane mode more than doubles my phone battery life.
Local map on phone not over internet:
Use an app that uses a downloaded map - not one that relies on a connection to constantly download appropriate maps.
Location information only when you need it
Some apps will allow map display without location information - you can then pan with your fingers. That would reduce the battery consumption while still giving you a map. You do have to 'find yourself' on the map just like a paper map. If you are lost turn on the location (GPS and/or cell phone) information.
Last edited by Warin; 27 Dec 2017 at 06:52.
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