We have seen BlackBerry emphasize their Trade-Up program before for deals, too be honest I though it fell away a while back, but here they are with some great deals for the US and Canada for all iPhone models from the 4s to current iPhone 6.
For a limited time, starting December 1st.
Upgrade to a BlackBerry® Passport and get up to $400 back for your iPhone and an additional $200 from BlackBerry. Subject to Terms and Conditions.
To qualify for this offer, you must have purchased a BlackBerry Passport from select online retailers on or after December 1st, 2014.