Yahoo!® Messenger for BlackBerry® smartphones allows you to chat in virtual real-time with your instant messaging IM contacts when and where you want to not just when you're in front of your computer. **Please Note: If you have recently upgraded your Yahoo! Messenger client and are having difficulties signing into the Yahoo! Messenger service, please try the following: 1.On the Yahoo! Messenger sign-in screen ensure that the "Remember my ID and Password" option is NOT checked 2.Re-enter your login credentials 3.Sign back into Yahoo! Messenger Service

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https://appworld.blackberry.com/webst...countrycode=SA