I had been using this IPCC, iPhone_3.0_Maxis_my.ipcc.zip ( 24.31k ) on my iPhone 3G. My 3G has always been off in the settings menu. I managed to send MMS and was charged $0.25 on my hotlink account. I have yet to try receiving any MMS. I think you get charged $0.25 (maxis-maxis) no matter using 3G/EDGE/GPRS right?