There is also a difference between your phone wich might be 2.5g Or Edge wireless and the new 3g Known as UMTS

the 3g UMTS has way faster speeds than the 2.5g Edge signal. But then again the ping time is still pretty high due to the amount of travle to the server

Aircard to tower tower to the splitter then to the internet you wont get fast ping with that amount of travle time.

I use to work at cingular as a tech rep :}