Blackberry OS Question:

What do you know about BlackBerry 7?

Answer:

BlackBerry 7 is a mobile OS created by the BlackBerry company (formally named Research In Motion). It originally launched in April 2011, and a 7.1 version update was released in January 2012.

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How to Recover a Dead BlackBerry?	Suppose I am trying to sign in to my BlackBerry Internet Service Account, but I am getting this error message: “The User ID and Password provided are invalid. Please re-enter your User ID and Password and try again.” What should I do?