ORLANDO, Florida (Reuters) - BlackBerry unveiled a new mid-tier smartphone device with a physical keyboard on Tuesday, the feature that still sets it apart from most rivals, and said its make-or-break new devices had put the company back on "solid ground." The Canadian company, which hopes new smartphones powered by its BlackBerry 10 operating system will prompt a turnaround, said the new Q5 mid-tier phone would be available in the summer in a range of colors. ...



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