How to connect my blackberry to my iphone?

I want to tether my blackberry to my iphone via mobile hotspot, is there a way to do it with using Wi-Fi and without subscribing? And if I can't use my mobile hotspot is there another way to connect my blackberry to my iphone? Btw when I try and connect my blackberry to my iphone via mobile hotspot I can see my blackberry network and it's available to use on my iphone but then my blackberry doesn't connect and it says I need to subscribe or connect to Wi-Fi and then I lose the connection for my iphone. Btw I don't have Wi-Fi and the only internet connection that I have is on my blackberry, thanks for any help.

You can only connect your blackberry to iphone by turning on internet sharing on your iphone(you should have a data plan for your iphone to do this) then turn on Wi-Fi on your BB device and search for networks, once found connect to the network that belongs to iphone. Once connected, your BB device can use iphone's internet connection to go online.