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Try these options:
Hard Reset the BlackBerry by holding ALT, CAP (right Shift key), and DEL (or pulling out and reinserting the battery)
View Messages > Saved Messages
View Messages > View Folders, check each folder (missed calls, SMS in and out boxes, MMS in and out boxes, Saved, browser, phone logs etc)
Scroll to top of message folder, over the date heading, click or press menu to MARK PRIOR OPEN
Change your theme and see if it persists, and change back to your desired theme. (Options > Theme > select.)
Wipe and reload your OS.
1. If any post helps you please click the below the post(s) that helped you. 2. Please resolve your thread by marking the post "Solution?" which solved it for you! 3. Install free BlackBerry Protect today for backups of contacts and data. 4. Guide to Unlocking your BlackBerry & Unlock Codes