Originally Posted by takeshi
Nope --- SIM's are SIM's. You're probably trying to put it in the microSD slot as chrisb3 says (and a search would have lead to many threads asking the same question with the same answer). FYI - The SIM slot has a diagram right next to it showing you which direction the notch needs to face when you insert the SIM into the slot.
What Takeshi said.
I have an 8830 and an 8800 and I just put the Vodaf
one SIM card into the 8800 and the AT&T SIM into the 8830. They fit with no problems.