By Euan Rocha TORONTO (Reuters) - Struggling smartphone maker BlackBerry Ltd is weighing options that could include an outright sale, it said on Monday, and its largest shareholder is stepping down from its board to avoid any possible conflict of interest. BlackBerry, which pioneered mobile email with its first smartphones and email pagers, said on Monday it had set up a committee to review its options, sparking a debate over whether Canada's one-time crown jewel is more valuable as a whole or snapped up piece by piece by competitors or private investors. ...



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