Can i put my sim card from blackberry in iphone 3gs?

So my friend told me that I can have her Iphone 3gs since she has the iphone 5 now… I was just wondering that with my blackberry social plan, will it work if I UNLOCK her phone? I know bbm won't and i won't have data but i'll just use Wi-Fi. I put my sim card in and it said no service too… But this might be because it is locked to bell., Thanks for the help!

As long as it uses social for bb it will stay locked

Just make iPhone 3Gs jailbreak, go to http://www.iclarified.com/25170/how-to-jailbreak-your-iphone-3gs-using-redsn0w-windows-60.

P.S. Think twice before going for jailbreak, as it can sometime be risky. Seek help from a guy or friend who is a geeky one in computer and mobile phones.