Iridium 9555- What does Error message SIM PIN mean on my Iridium 9555?
Summary:

This article describes when an iridium 9555 displays the error message SIM PIN.
Message Received:

SIM PIN
Resolution:

Enter the four- to eight-digit SIM card PIN code provided by your service provider and press OK to proceed. See Chapter 13, ‘Using the Security Menu’, for more information about your SIM.
Important Notes:

important