Qualcomm has developed wireless chips that will enable cell phones to hop back and forth between existing 3G networks and 4G networks, saying they will become available commercially later next year. Also, Qualcomm CEO Paul Jacobs showcased a Lenovo-made "smartbook" at an analysts meeting Thursday, saying AT&T has backed the mini-laptop device, which will run on the "snapdragon" chipset Qualcomm will introduce in January.

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