Download 'Here Maps' (it was /is a Nokia product) and the set of maps that you want to use, it is available for Android and Apple, you can use it for free and you can use it offline, GPS is not the huge power drain it once was, the GPS won't on its own accord use data only the apps that attempt to use the location provided by the GPS will actually use data and the amounts of data used is vanishingly small unless you are relying on live map downloads. https://itunes.apple.com/app/id955837609 https://play.google.com/store/apps/details?id=com.here.app.maps Switching off the GPS only means that the circle of probability of you location expands to the cell you are currently in, the phone companies are still able to track you with a fair degree of accuracy by triangulating your phone's presence on multiple cells, the phone is communicating with more than one transmitter at a time and the network has an algorithm for deciding when to hand over from one tower to the next as you move. Some locations are served by multiple micro cells and this allows further increases in the accuracy by which you can be tracked, also if you have two phones one is paid on contract the other is a PAYG they pretty much know that you own a PAYG whether you paid cash for the phone and its reloads or not. Also again even without GPS say you were in a car travelling with friends and your phone was PAYG and had been purchased and fed in such a way that your name was not connected with it, well the phone company knows there is a relationship between your friends contract phone or credit card paid for PAYG phone and yours, they might not know who you are but they are able to track you if they really wanted to or had a reason to. These are network capabilities I doubt that it is easy for them to do in real time but I would expect the likes of GCHQ to be harvesting information like this in their quest to track the movements of people of interest, be they drug dealers or terrorists. P.S. Here Maps has full coverage of the Philippines for SatNav purposes and the maps are reasonably up to date although you do have to be careful in Manila because one way roads very often change direction at the whim of the local police
http://londonpe.dfa.gov.ph/embassy-...s-alexander-mcmullan-filipino-british-citizen one of the victims of the 03 june terror attack in London.
