[quote AlphaDog]My son sent me a link to a phone he's bidding on, and the detailed specs for it say the SIM card for that particular one will hold 250 contacts, each one containing space for five phone numbers, an e-mail address, a Web address, a street address, job title and company, birthday, and notes. I was looking for something that gave its size in MBs or GBs, but I couldn't find that. The phone itself holds 500 contacts. Or so it says in the fine print.
I'm not sure they're all the same, because at least this one appears to be pre-formatted.
Personally, I don't know 250 people. Well, maybe I do, but not 250 that I'd put in my Contact list on a phone. I'm more the five contact type.

OK, six, maybe.
All SIM cards are the same in the network type.
Frpm WIKI:
"At the end of 2006 the most common GSM SIM in the US is 64KB - this stemmed from Nov 2004 when the Cingular and AT&T merger triggered the supply of 64KB SIMs over 32KB to better support both networks (and make them look like one)."
That isn't the SIM card, that is the data card.
I have a 1GB in mine, factory was 128MB.
**EDIT**
Those specs are most likely the internal memory if there is no memory card slot.
BGnR