In order to ensure that no SIM cards are registered in the name of the subscriber without his knowledge, the Commission in coordination with Saudi Telecom Company (Jawwal), Etihad Etisalat (Mobily), and Saudi Mobile Telecommunications Co. (Zain) has developed a free of charge mechanism that enables the subscriber to know the number of SIM cards registered in his name, as follows:

STC : Sending SMS message containing the number (9988) to the number (902)
Mobily : Sending a blank SMS message to the number (616166)
Zain : Sending a blank SMS message to the number (700123)