Blackberry offers up to a $600 credit in the form of a Visa gift card for free when you trade in a working iPhone 6 and purchase a new Blackberry Passport from Blackberry.com or Amazon. (You'll have to mail in your trade-in device within 30 days of your Blackberry Passport's shipment date.) That's the first trade-in offer we've seen from Blackberry, and if you qualify for the maximum credit it basically bags a free Blackberry Passport. The Blackberry Passport is an unlocked, GSM phone. It features a Qualcomm Snapdragon 801 2.2GHz quad-core processor, 4.5" 1440x1440 touchscreen LCD, touch-enabled QWERTY keyboard, 3GB RAM, 32GB flash storage, 13-megapixel rear-facing camera, 2-megapixel front-facing camera, WiFi, Bluetooth 4.0, USB, and a microSD card slot. Deal ends February 13.