Where can I buy a SIM card for a Blackberry Pearl 8100?

Question

I had recently bought a Blackberry Pearl 8100 (white). It's unlocked by the company I purchased it from. All I need now, is a SIM card. Where do I purchase one? And I also noticed there is another slot next to the SIM card slot. Is that where the memory card goes? Or does it even require that? ( The phone has T-mobile printed on it.)

Answer 1

a electronic syore  

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