The "Blocked" message indicates that the sim pin has been entered incorrectly 3 times, and will require the PUK (PIN Unblock Code) to reset the PIN. In order to obtain your PUK code it will be necessary to contact your Service Partner for assistance.

Yes, the 4 - digit SIM pin can be changed. For specific instructions please refer to the appropriate user manual. If additional assistance is needed, please contact your Service Partner.

For information on prepaid services, click here.

Dial 2888 (+2888 or 002888 will also work) on your Iridium phone and press the green key.

To receive an SMS message with your prepaid balance, send a blank SMS message to 2888 (+2888 or 002888 will also work). The Iridium system will respond with the number of remaining ISU-PSTN minutes in the account, the number of days until the account expires, and the date and time (GMT) of expiration in English.

ADDITIONAL INFORMATION:

The prepaid balance is calculated based on ISU-PSTN minutes. If you place a large amount of ISU-other satellite calls, the announced minutes will be higher than actual. If you place a large number of ISU-ISU calls, the announced minutes will be lower than actual.

Your service may have been suspended due to a negative account balance. Your SIM card will remain suspended until you can recharge the account with additional prepaid units. If this account is not recharged, it will remain suspended until it expires. You will need to contact your Service Provider to recharge your account.

The ability to dial a toll free number is determined by provider of the toll free number.