Can i use the same sim for a blackberry and an iphone 4?

So my iphone 4 broke and i'm using my uncles blackberry he doesn't use. Not sure what model it is, its recent, so will the sim fit both phones?

If you're using a Micro sim for your iPhone, check the sim card slot in the blackberry phone and try to insert the sim. If it works then great you can use it on both phones. Cheers

It may fit but if the phone is the type that is locked to the prior service then it won't allow it.
If it is and If your uncle still has his information for when he had a service contract, then he can call and they will give him the unlock code.

Read pages 1 thru 6
http://electronics.howstuffworks.com/how-to-tech/how-to-unlock-cell-phone1.htm

Likely not. The iPhone 4 uses microSIMs whereas that BlackBerry would use miniSIMs.

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