BlackBerry Ltd., which struggled to entice customers with touch-screen models last year, plans to return its focus to keyboard-equipped phones under Chief Executive Officer John Chen. “I personally love the keyboards,” Chen said in an interview yesterday with Bloomberg Television’s Jon Erlichman at the International Consumer Electronics Show in Las Vegas. In the future, the company’s phones will “predominantly” have physical keyboards, he said, rather than touch screens. Chen, who took the CEO job in November, is trying to rebuild the company after last year’s BlackBerry 10 touch-screen lineup fizzled with consumers -- contributing to billions of dollars of writedowns. As part of his comeback plan, BlackBerry is refocusing on the corporate and government customers that fueled its early success. Those users preferred real keyboards because they made it easier to hammer out e-mails.