iPhone 4 sim card

[DryEyez]

Hey guys, I've been offered an iphone 4, and as I seem to be liking my new macbook pro I thought why the hell not. Here's my problem though. At the moment I have a blackberry, and I'm on contract, so I need to use the same sim card, the sim card however is obviously a normal one, so how do I "transform" this into a micro simcard that the iphone 4 requires? Can I do it myself for instance?

Has anyone else been in my situation?

 

[Applejuiced]

You can either cut it yourself or use one of those microsim cutters that does it perfect each time.
Make sure you dont mess it up and ruin the sim though.
There's many tutorials online on how to do it.
http://iphonetuts.com/blackra1n/109704/how-to-convert-a-sim-to-a-microsim/

 

[beentomb]

I couldn't do it at first either. Someone in the AT&T store did it for me with the same device used for 3G/3GS. Just press REALLY hard on it.