Do you have the correct SIM Card?
Iridium Flex plans can only be activated on white SIMs starting 896
Monthly Plans: Connect your service month to month for as long as you want it. In the off-months, you can disconnect your service and keep your local number for only $10/month. At any time you can reconnect your SIM for free, and we will restore your local number.
Dedicated Local Number: Customers signed up to the Iridium Flex Plan will be assigned a dedicated US or UK phone number and a SIM card free of charge. This results in much lower calling charges, as calls to the handset will charge at the same rate as the network rate, rather than the Satellite Phone rate. Iridium Flex customers must select their preference to a US or UK phone number, when completing the pay monthly contract. Customers on the Standard Iridium Plan can be provided with a US number as an Add-On Service, at an additional fee.
Monthly Service Allowance: The Standard Iridium Plan's Inclusive Mins and SMS only include voice calls or SMS messages. The monthly allowance included in the Iridium Flex Plan extends beyond calls, to all services.
Free Test Call Service: To test your number free of charge, call our test call service on +1-480-752-5105.