What's the future of smartphones? Think personal assistant By: CNBC.com News March 28, 2014 at 07:59 AM EDT Since the days of bulky "brick phones" that weighed 2 pounds, mobile handsets have undergone an impressive evolution over the past four decades. Read More >> Related Stocks: Credit Suisse Group Credit Suisse Group ADR Google, Inc. Intel Corp Samsung Electronics Ltd Twitter, Inc.