RIM has been trying to address an issue with BlackBerry Messenger 5.0 for some time now that involves a disappearing BBM icon after installation. The issue is that the latest version of BBM is not compatible with certain OS versions and RIM has addressed this by leaving the following note on App World:
1. Before downloading, please back up your contact list by displaying the menu within BlackBerry Messenger – Options – Back Up. (Available for BBM 5.0 and 5.0.1 users)
2. Please ensure that you are using RIM or carrier approved BlackBerry Device Software to avoid compatibility issues that may result in loss of the BBM icon. For more information, read article KB23968.
3. After installing the new version of BBM, please restart your device.
According to KB22308, “This is a previously reported issue that has been escalated internally to our development team. No resolution time frame is currently available.”
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