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Cell phone carriers make us pay extra for internet connection?

I am looking for such cell phone carriers that offer their plan with smart internet connection. I am enjoying very good network service of Verizon in Canada, but I have found some difficulties with respect to internet connection. I am ready to pay some extra charges $25 per month for smart internet facilities. If the other cell phone carriers apart from Verizon are providing such benefits, please share with me. I have Motorola Defy and it is supporting very good connection for internet. You are welcome to provide me with best answer.