title: is GPS/Glonass possible without data?
body: <p>I am looking to develop a simple application where I just need things like <strong>lat/long coordinates</strong> probably using the <code>CoreLocation</code> framework. I am leaning towards developing on either the ipad mini or iPad w/ retina.</p>
  
  <p>The tablet will be taken off seas in a boat where there will be no wifi. This rules out the wifi models. My question is, can I buy a 3g/lte model and just use the <code>GPS/Glonas</code> to get coordinates, or will I need to buy an external gps such as the <code>Garmin Glo</code>?</p>
  
  <p>Is this possible without having to pay for the service as well? Is there any recommendation into which carrier to get, <code>(verizon, at@t, or Sprint)</code>? I'm thinking this shouldn't matter because the gps does not use data but rather the built in chip. Lastly, will a 16gb model suffice for just location variables in an app, or should I buy a larger capacity?</p>
  
  <p>Also, can the gps be used with airplane mode disabled?  </p>