i cant send pxts, i get a "sending failure" message; and it wont let me receive them directly to my multimedia inbox...i have to go to pxtworld to view them. i've phoned vodafone and they told me to enter the pxt settings from wireless.vodafone.co.nz...i've done all that correctly three times now..also my WAP settings. still, i have the same problem...this has only happened since i bought a new sim and battery....somebody please help?