BlackBerry is offering iPhone users up to $550 to trade in their iPhone for a BlackBerry Passport as a desperate measure by the struggling manufacturer to gain market share in the US and Canada from December 1st. UK retailers like John Lewis, Argos, and Dixons anticipate that Black Friday will drive significant mobile traffic and sales, as the event has grown in popularity and recognition among British consumers in recent years. Adobe research found that mobile sales on Thanksgiving day in the US are expected to increase 10% compared to last year and reach $418 million, while 26% of Black Friday shoppers will use mobile devices to make purchases.