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I have a nexus 4 and wen i use a offline gps i think it using some of my data plan is that normal ?


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GPS programs need access to data at very least during the search phase, when you are trying to localize an address, for example. If you are using HERE or MapFactor Navigator, both apps which download the maps ahead of time, then that is the extent of your data use. You can eliminate this data use by doing your searches while you are connected to wifi before you leave. The downside is that loading all maps ahead of time takes a lot of space (several gigabyte for North America), so may not be suitable on entry level devices.

Other apps like Google Maps download pieces of the map on the fly only as needed and require data once the current chunk of map in memory has been exited. Apart from the fact that it's a Google product, the fact that only very limited maps onboard are required at one time make this a more popular product on devices with limited memory.

Userlevel 7
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BobTheElectrician wrote:

GPS programs need access to data at very least during the search phase, when you are trying to lo...

GPS programs need access to data at very least during the search phase, when you are trying to localize an address, for example.

Some do, some don't. The one I use, Copilot Live, is completely free from needing to connect to the  'net, once the maps are downloaded. It includes a sizeable database of POI, and maps are updated fairly frequently. The only downside is that it takes much longer to acquire your location if you have moved any distance with the phone turned off. I have used it across Canada, into the USA, and in parts of Europe without difficulty.

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