Blackberry is will introduce the BlackBerry optical trackballs. In previous model a side button which rotates and then navigation has been seen on screen and after that a pearl series introduce. Which is more popular then previous models. These model contains a pearl which is used for navigating, but now the news is break that blackberry making optical track balls , which a new technology and never heard before. There is no exit date for lunching the phone but we hope this will come soon.
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