請問各位大大，iPhone 3G or 3GS，何者有內建GPS晶片，就是其可以像導航機一樣，不需要透過系統業者就可以直接抓衛星訊號，感謝！！！
JCHEN922 wrote:
請問各位大大，iPh...(恕刪)
http://www.mobile01.com/topicdetail.php?f=383&t=1122875&last=13027441
快變月經文了.....問之前先搜尋一下吧～～～
Location Services
GPS (Global Positioning System) technology uses information from earth-orbiting satellites to find locations. A-GPS (Assisted GPS) on iPhone 3GS goes a step further, finding the closest satellites to more quickly identify your position. If you’re not within a clear line of sight to a GPS satellite, iPhone finds you via Wi-Fi. If you’re not in range of a Wi-Fi hotspot, iPhone finds you using cellular towers. The size of a location circle tells you how accurately iPhone is able to calculate that location: The smaller the circle, the more accurate the location. iPhone also offers a built-in digital compass that automatically repositions maps to match the direction you’re facing.
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