If you live in Ontario, what happens is you end up paying your flex tab and if you have data You're charged promo pricing on the 4s. Your flex tab is calculated by
Cost of the device / 24 (your 2 yr. term)
Then multiplied by however many months are left.
The overall price depends on what model Bb you have
Best thing to do is to call customer service
1-888-764-3771
Or
*611 off of a Rogers device