PIN messages are not received on a BlackBerry smartphone but are marked as delivered

Article ID: KB21988

Type: Support Content

Last Modified: 12-15-2011


Product(s) Affected:

  • BlackBerry Messenger for BlackBerry OS 7 and earlier
  • BlackBerry® Messenger
  • BlackBerry smartphones

The letter D appears beside the BlackBerry smartphone user's sent PIN message, but the message is not received on the recipient's BlackBerry smartphone.


The firewall on the recipient BlackBerry smartphone is set to block incoming PIN messages.


To prevent the firewall from blocking incoming PIN messages, perform the following:

  1. From the Home screen of the BlackBerry smartphone, click Options.
  2. Click Security Options.
  3. Click Firewall.
  4. Clear the PIN check box.
  5. Display the menu and click Save.

Note: If the check box cannot be cleared, see KB17566.


By downloading, accessing or otherwise using the Knowledge Base documents you agree:

   (a) that the terms of use for the documents found at apply to your use or reference to these documents; and

   (b) not to copy, distribute, disclose or reproduce, in full or in part any of the documents without the express written consent of RIM.

Visit the BlackBerry Technical Solution Center at