Question.

Can I operate a SGN with a BIS carrier(Blackberry) simcard? Without any flaws? Yes you can. I have a BIS service plan which I use on my SGN without any problems.

Can I operate a SGN with data plan that aren't specific to the telco plan? Eg; iphone plan,change device means a normal process. I believe you can since it's a generic data plan not a specific plan for a particular type of device.

Scenario:
I buy iphone 4S + plan, and use the plan on my SGN and throw the iphone from 10th floor.Please dont throw it - give it to me 

Thanks in advance.