yup maxis supports EDGE. if EDGE isn't available at your area it will switch back to GPRS. (EDGE is labeled as E while GPRS is labeled with a aquare with a dot, or just a square on earlier firmware)
the charges are the same between HSDPA, 3G, EDGE and GPRS. they r only charged based on data usage. myb u wanna check on maxis website for the rate. roughly it's 1 cent per kb, unless u r on unlimited data plan.

This post has been edited by LaskarCinta: Sep 20 2008, 03:04 PM

but u can always search this forum for earlier posts to get real instant answer.

btw if u r using prepaid then myb u wanna be careful with your data usage. your credit will be flat in no time. and if u r using it on postpaid (without data plan) then you will be afraid of your bill.

the iPhone always access internet to update data on Stocks and Weathers too when u r not using internet applications (not mentioning the Mail)

it's roughly RM10 per MB. wanna some youtube on your iPhone?

This post has been edited by LaskarCinta: Sep 20 2008, 03:44 PM