You know you can’t live without one, and now, you can earn 4,000 American AAdvantage miles when purchasing a new BlackBerry. Visit www.aa.com/blackberry, complete a qualifying purchase of a BlackBerry phone with a newly activated or upgraded wireless plan and provide your AAdvantage account number at check out to get your miles. You can trade in your existing cellular device to receive credit toward the purchase of a new BlackBerry (visit www.aa.com/blackberry, click the BlackBerry page, and then look for the “Get Cash Back” link). Your miles will post in 8-10 weeks. You must maintain the wireless line of service for at least 12 weeks after the activation date to keep your miles.