title: Difference in compass, gyroscope and GPS : Android vs iOs in Unity
body: <p>I developed an iOS AR app with Unity.
  It shows Points Of Interests in a city : like foursquare. 
  This is how it works (roughly) :</p>
  
  <ul>
  <li>Position of the user by GPS.</li>
  <li>Script that orientates the camera : using the gyroscope and the compass altogether.</li>
  </ul>
  
  <p>When I try to adapt it to Android I got bad results. Like real bad. 
  I know that not all Android phones have a gyroscope, I'll exclude them from DL the app.
  But for those who have Gyroscope and compass it should work almost the same...</p>
  
  <p>Do someone know the fondamental differences that could cause that ? Do I have to Write native plugins ?</p>
  
  <p>Thank you guys !<br>
  Quentin</p>