Does iMessage need a data plan?

So i have a blackberry plan that does not allow for data, but it does have unlimited text. I want to use the sim card on my iphone 4. I wanted to know if I could use iMessage even if i don't have data.

IMessage does need a data plan only because when you're out it uses 3G. Unless there's a Wi-Fi connection then it will use that.

IMessage requires an internet connection. If you have Wi-Fi you'll be fine but if you don't, you'll need some sort of data. Hope this helps!

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