Let me teach you how yo do it. First you restore the default setting in Access Point Names, you tick the Use packet data, you try to sent one mms,after you successfully sent one, you go in the Access points names. there will be 2 APN there. you delete APN for the internet one. Done. you can sent and receive mms but no charge for internet because the access point is deleted. Reminder : you need to do it all over again next time you reboot phone,understand?