Iridium 9555 - Unable to Send SMS

This article covers failed SMS messages from the Iridium 9555. 

Solution One: Program the service center number

1. Power on the Iridium phone
2. Press the Menu button
3. Select Messages
4. Select Settings
5. Select Service Center
6. Enter the following: 00881662900005 
7. Press the OK button to save
8. Send a new message

Solution Two: Using the correct dialing format

1. Make sure you are outside with a clear line of sight to the sky and not surrounded by any significant obstructions (tress, buildings, power lines)
2. Extend the antenna
3. Wait for the phone to register, the word Registered will appear on the display
4. Press Menu
5. Scroll to Messages, and press Select
6. Select Create message, and press Select
7. Enter desired message (press the * key for special characters)
8. Press Options when done
9. Select Send, and press Select
10. Select New Recipient and press Add
11. Select Enter Number and press Select
1. Alternatively, you can also choose a contact from the list and press Select
12. Enter the recipient number, starting with + followed by country code, area code and phone number and press OK
• Example: + 1 416 253 6008
13. Press Send to send your message