Hey guys!!

Tempted to get the IPhone 3Gs on the Hotlink plan. I can use wifi to download all my apps and videos right? And most places i go to have a wireless connection, so the 500mb data plan doesn't really matter right? If i decide to stick my Celcom postpaid into the new IPhone 3Gs, will the 500mb data be automatically forfeited, say if i decide to swap back to my Hotlink again? And also, on my postpaid Celcom plan, data is exp, i can just stick to wifi for everything right?