Delete service books: BlackBerry OS 4 & 5

    1. On the Home screen of the BlackBerry smartphone, click Options.
      • Depending on the theme on the BlackBerry smartphone, you may need to click Settings first.
    2. click Advanced Options.
    3. Click Service Book.
    4. Locate the service book associated with the BlackBerry Internet Service account.
      • The BlackBerry Internet Service service books are named after the associated email accounts.
      • Examples: "account name"[CMIME] or "account name" [CICAL].
    5. Click the service book and select Delete.
    6. When prompted to confirm, click Delete.