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One of the disadvantages of the less expensive iPad 2 Wi-Fi is that it does not have a GPS, so it can not run any of these great full-screen navigation applications.
GPS is limited to the most expensive 3G iPad models. But if you have a GPS-compatible iPhone, you're in luck. The iPad 2 Wi-Fi inherits GPS functionality when it is attached to an iPhone.
This was discovered by Kyle Carmitchel during a recent road trip.
While his iPad 2 was connected to his iPhone, Kyle launched the Maps application of the iPad. To his surprise, the iPhone has begun transmitting GPS information to the iPad.
As we got closer, I decided to take directions to make sure everything was fine. I have launched the iPad maps application, expecting to navigate to the old without GPS help – knowing that GPS is only available on the models of the iPad. IPad 3G. Imagine my surprise when my iPad spotted exactly where we were on the road.
Kyle uses the Personal Hotspot feature on his iPhone 4. As he points out, iPads and iPhones exclusively for Wi-Fi from Apple are able to know their location via a WiFi location service. The service notes MAC addresses of nearby WiFi access points and searches a database of router locations, which gives an approximate location.
However, Kyle says that his iPad receives authentic GPS location information, which comes from the iPhone:
It is clear that I receive GPS information from the phone, at an interval of about one minute between refreshes (probably, they did not update in real time to avoid spoiling the phone's battery).
So if you were considering a 3G iPad for GPS, you might want to consider an iPad only Wi-Fi. If you have iPhone connection sharing, you can use it on the go.
Can any one test this with previous models of the iPhone and the iPad? Does it work with a first generation iPad attached to a 3GS?
Here is the video of it in action:
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