ถ้าเข้าใจไม่ผิด รู้สึกว่าอาจจะมี GPS เฉพาะในบริเวณที่มีสัญญาณ 3G นะครับ
(มีเฉพาะในรุ่นที่มี 3G แต่ไม่แน่ใจว่าออกนอกเขตสัญญาณ 3G แล้ว GPS จะทำงานได้รึเปล่า)
Assisted GPS (Wi-Fi + 3G model)
GPS
Apple put a compass inside every iPad, so you'd think that there would be a GPS unit in there, too. The Wi-Fi-only models get nothing, just like the iPod Touch, but more surprising is that the 3G iPads come with AGPS.
Assisted GPS can be one of two things, both of which which offload some work to internet servers and use cell-tower triangulation. The difference is that some AGPS units have real GPS too, and some don't. We'll know which the iPad has as soon as we get our hands on one.
