Will my blackberry bold 9900 sim card work on an iphone 4s?

I currently have a blackberry bold 9900 and i want to switch to an iphone 4, will my sim card work with the iphone? And if not do i have to get a new sim card? If so how do i transfer all the information\data plan from my old sim card to the new sim card

Probably

No. Apple has a proprietary Sim card. (of course)

No, you would need a micro sim card.

Of course it will! I've done exactly what you're asking, except it was easier for me to simple purchase a sim card cutter from eBay and cut the sim card down myself. It saves a lot of hassle and works perfectly well with no problems whatsoever!

Hope this helps, good luck.

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