How to Check SIMs on Your Iqama in Saudi Arabia: CST Arqami Guide
Did you know someone could have a SIM card registered under your Iqama without you knowing about it? In Saudi Arabia, the person a number is registered to is responsible for anything done with it. That is why it is worth checking, every now and then, which SIM cards are linked to your ID — and cancelling any number you do not recognise.
The good news is that the check is free, takes about two minutes, and you do not need to visit any office. This guide shows you how to do it through the official CST service, how to check Mobily numbers by SMS, and what to do if you find a number that is not yours.
What Is the CST Arqami Service?
Arqami — also called “My Numbers” or “Inquire about my numbers” — is a free service from the Communications, Space and Technology Commission (CST), the telecom regulator in Saudi Arabia. It was previously known as CITC, so older guides may still call it the CITC SIM check. It is the same service.
You enter your Iqama number, and the service shows you every active mobile number and data SIM registered to your ID, with every network — Mobily, STC, Zain, Virgin, Lebara and the rest. You can use it on the Mutasil portal on the web, or in the CST app. No login is needed for the basic check.
Method 1: Check on the Mutasil Portal (Best Way)
This is the most reliable way, and it works for all networks at once. Follow these steps:
- Open the “Inquire about my numbers” page on the Mutasil portal (mutasil.cst.gov.sa), or open the CST app and choose the same service.
- Enter your Iqama number in the Person ID field, and your date of birth.
- Answer the question “Do you have a mobile number?” Choose Yes and enter one of your registered numbers, or choose No if you do not have a Saudi number yet.
- Type the captcha code shown on the screen and select Inquire.
- Follow the verification step on screen — a code is sent to your registered mobile number to confirm it is really you.
The result screen shows the total numbers registered with your ID number and the total service providers those numbers are with. A note at the top tells you to contact the provider about any number listed, for questions, complaints or cancellation.
If you sign in to the Mutasil platform instead (with Nafath), you can see your registered numbers straight away, without filling in the form. Business owners can run the same check with a Commercial Registration (CR) number.
What the Result Shows — and What It Does Not
| What you see | What it means |
|---|---|
| Total numbers on your ID | Every active mobile number and data SIM registered to your Iqama |
| Total service providers | How many different networks hold numbers under your ID |
| Only active, authenticated numbers | A number that is active but not yet authenticated with your fingerprint will not appear |
| A number you expected is missing | Contact that operator — your fingerprint authentication may not be complete |
One important detail: the service lists only numbers that are active and authenticated. If a number you use is missing from the list, do not panic — it usually means the fingerprint authentication for that line was never completed. Visit the operator or call them to sort it out, because an unauthenticated number can be cancelled.
Method 2: Check by SMS (Mobily and Other Networks)
If you only want to check one network, you can send a free SMS from the SIM you want to check. A blank SMS means you leave the message body empty.
| Operator | Send to | Message |
|---|---|---|
| Mobily | 616166 | Blank SMS |
| STC | 900 | 9988 |
| Zain | 700123 | Blank SMS |
You will get a reply listing the number or numbers registered under your ID with that operator.
A word of caution: these SMS codes come from an older regulator notice, and some guides report that they may no longer work for every operator. If you send the SMS and get no reply, do not assume there is no problem — use the Mutasil portal instead, which is the reliable way.
How Many SIMs Are Allowed on One Iqama?
There is a limit on how many prepaid SIMs one person can hold. The table below shows the published rule.
| Who you are | Maximum prepaid SIMs |
|---|---|
| Expat (Iqama holder) | 2 prepaid SIMs |
| Saudi citizen | 10 prepaid SIMs |
The limit counts voice and data SIMs together, across all networks — so a Mobily voice SIM plus a Mobily data SIM already uses up an expat’s two. The rule comes from a 2017 CITC decision, and CST has not published a newer figure, so always confirm the current limit with CST or your provider if you are planning a new line.
Found a SIM You Do Not Recognise? Do This
If the check shows a number you do not use, act on it straight away. You are responsible for any misuse of a number in your name.
- Contact the operator and ask them to cancel the line. For a Mobily number, call customer care on 1100, or 0560101100 from another network.
- If the operator has not solved it within five working days, escalate the complaint to CST through the Mutasil portal (“Escalate telecom complaints”), or call CST on 19966.
- Run the check again to confirm the number has been removed from your ID.
Never let anyone register a SIM with your Iqama, and do not sell or lend a SIM that is in your name. If someone else uses it, the trouble comes back to you.
Can Visitors Check SIMs Without an Iqama?
No. The Arqami service needs a Saudi National ID or Iqama number (or a Commercial Registration number for businesses). Visitors on a visit visa, who do not have an Iqama, cannot use the inquiry. If you are visiting Saudi Arabia, your visitor SIM is registered to your passport instead — see our guide to Mobily visitor packages for the details.
One more thing worth knowing: there is no SIM check inside Absher. Some older guides describe an Absher route to check your numbers, but that is out of date. Use the Mutasil portal or the CST app instead.
FAQs
Is the CST SIM check free?
Yes. The “Inquire about my numbers” service is free, and the result is instant. You can use it on the Mutasil portal without logging in, or through the CST app.
Can I check SIMs on my Iqama without a Saudi mobile number?
Yes. Choose “No” when the form asks whether you have a mobile number, then enter the captcha and select Inquire. You will see a limited result — the operators holding registrations under your ID — rather than the full numbers.
How many SIM cards can I have on my Iqama?
As an expat, you can register up to 2 prepaid SIM cards, counting voice and data SIMs together, across all networks. Saudi citizens can register up to 10 prepaid SIMs. The limit comes from a 2017 CITC decision, so confirm the current figure with CST or your provider if in doubt.
What should I do if a number on my Iqama is not mine?
Ask that operator to cancel it — for Mobily, call 1100. If it is not solved within five working days, escalate the complaint to CST through the Mutasil portal or call CST on 19966, then run the check again to confirm the number is gone.
Can I check only my Mobily numbers by SMS?
Yes. Send a blank SMS to 616166 from your Mobily number, and you will get a reply listing the Mobily numbers registered under your ID. This code comes from an older regulator notice, so if it does not work, use the Mutasil portal instead.
Last updated: 14 November 2026
Edited by Ali.