How to get bbm to work on my iPhone?

Iv downloaded the bbm app for my iPhone and signed up and got the email but now when I click on the app a sign keeps coming up saying 'incorrect device time' what does this mean?
How do I get my bbm to work?

BBM: Black Berry Messenger.

iPhone: Not a Black berry.

I've never heard of an iPhone being able to run an app for a totally different phone, I don't think they do or can.

Make sure your date and time is correct and that Airplane mode is not activated AND you are connected to wi-fi and it should activate. It is a common problem with the BBM app on the iPhone apparently.

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