title: iPhone GPS Accuracy
body: <p>as I am developing for iPhone, I've just bought an iPhone 4 to test my application which needs to measure the coordinates of my location. I don't have any Internet (3GS, GPRS or whatever...) on my iPhone and the problem is:</p>
  
  <p>1) Without internet I get a 1744m horizontal accuracy, and that's very bad. (I've also tested the accuracy in other applications too, and it is always as bad or worse)</p>
  
  <p>2) With WiFi-Internet I get a 80m horizontal accuracy.</p>
  
  <p>Is that normal? What can I do to improve my coordinates-measurement accuracy?</p>
  
  <p>Thanks in advance for any help.</p>