The Communications and Information Technology Commission (CITC) has introduced a free system many year ago to confirm that how many SIM cards are registered under your name or under your Iqama. see also : How to Check Iqama Status Nitaqat (Red Green Yellow)
The purpose of this service was to protect you from SIM card fraud. Many criminals are using SIM cards to commit crime where in return the innocent person has been arrested when police investigate and this is happened due to SIM card which has been issued on your Iqama number. see also : Online Fingerprint Registration of SIM Card via Wthiq (Moi.gov.sa)
So, if you are living in Saudi Arabia and have a valid Iqama then you should protect yourself from such type of incidents. If you found that someone has issued a SIM card under your name, then you should contact the mobile network company to cancel the SIM which is issued on your Iqama number but not issued by you. check also : How to Check Iqama Expiry Date or Validity Date Online
The process to check how many SIM card has been issued on your Iqama and your name is easy. All, you need to send SMS on specific number to confirm. This method has been supported by Zain, Mobily and STC. check also : How to get New Iqama if your Iqama Lost or Stolen?
Check how many SIM card are registered under your Iqama:
If you are Zain subscriber then you need to send a blank SMS message to 700123.
If you are Mobily subscriber then you need to send a blank SMS message to 616166.
If you are STC subscribers then you need to send a SMS message containing number 9988 to number 902.