You bought a new STC SIM at the airport, swapped an old Sawa card back into your phone, or pulled a data SIM out of a router — and now you need the number, for a recharge, an Absher or bank OTP, or to tell your employer how to reach you.
Table of Contents
The good news: an STC SIM number check takes under a minute. A dial code works with no balance and no internet, an official app shows your number on its dashboard, and several backups cover you if the first method fails. This guide runs through them in order, fastest first — plus data SIMs, eSIMs, checking from abroad, and every SIM registered under your Iqama.
Quick Answer: The STC SIM Number Check Code
The fastest STC number check is the USSD code: dial *150# from the phone that holds your STC SIM and press call. Your number appears on screen within seconds.
- No balance needed — it works on zero credit.
- No internet needed — it runs on the normal phone network.
- It works on prepaid Sawa, postpaid, data SIMs and STC eSIMs. If the menu appears in Arabic, press 2 for English.
If *150# does not respond, do not keep redialling it — the mystc app and the free “Please Call Me” message below solve almost every case where the code fails.
Why You Might Need Your STC Number
- Setting up Absher, Nafath and bank apps, which send OTP codes to your Iqama-linked number.
- Recharging a Sawa SIM or activating a package, which asks for the exact number.
- Registering WhatsApp on a new phone, or sharing your number with an employer.
- Reporting a lost SIM, where STC support first asks you to confirm the number.
Method 1: Check Your STC Number With the USSD Code *150#
This is what most people mean by “STC SIM number check code” — always try it first.
- Insert your STC SIM and check the phone shows STC signal bars.
- Open the dialer and type *150# exactly — star, 150, hash.
- Press call. On a dual-SIM phone, choose the STC line if the phone asks.
- Wait a few seconds. Your STC number is displayed on screen. If the text is in Arabic, press 2 for English.
- Write the number down or screenshot it before closing the message — the pop-up disappears.
The check is free and works on basic feature phones as well as Android and iPhone — ideal for a brand-new SIM that has never been topped up.
One honesty note: STC does not publish this code in its own public help pages, even though expat guides across Saudi Arabia document it and it works on STC lines in practice. If your SIM stops responding to it, use Method 2 or Method 3.
Method 2: Use the Free “Please Call Me” Message
No balance to make a call, and the code did not work? Send a free callback request that reveals your number to the other person:
- Open the dialer on your STC line and dial *177* followed by a friend’s mobile number, then #. For example, *177*0501234567#.
- Press call. Your friend receives a free “Please call me” SMS with your STC number showing as the sender.
- Ask them to read your number back to you.
The service is free even at zero balance, with a reported limit of 10 free messages per day — far more than you need. It is also the classic trick for a data SIM: move the SIM into a phone, send the message, and read your number off the other handset.
Method 3: Check Your Number in the mystc App
The mystc app is STC’s official self-service app — the most reliable method when you have Wi-Fi or data, including outside Saudi Arabia.
- Download mystc from Google Play or the App Store — check the publisher is STC before installing.
- Sign in. If you are new, register with your ID or Iqama details and complete verification.
- Open the dashboard or number management screen. Your number sits with your line details at the top — with more than one number under the same ID, tap the line to confirm you are reading the right one.
The app also shows your balance, package and data usage. Because it works over any internet connection, it is the best way to check STC sim number details while travelling — USSD codes often do not answer while roaming.
Method 4: Check Your Number Online on the mystc Portal
If you do not want to install anything, the same account is available in a browser:
- Go to the mystc sign-in page at mystc.stc.com.sa — type the address yourself rather than following a link from a message.
- Sign in with your username or ID number and open your dashboard. Your STC number is displayed with your active line.
Check the domain before entering any password, and sign out on a shared computer.
Method 5: Find the Number in Your Phone Settings
Many phones store the number from the SIM itself — this works offline, with no signal and no balance.
On Android
- Open Settings, then About Phone — or open the SIM manager / SIM card settings.
- Select your STC SIM and look for Phone Number or My Phone Number.
On iPhone
- Open Settings, then Phone, then My Number — or General, then About, and find the number listed for the STC line.
- On a dual-SIM iPhone, look for the line labelled STC so you do not copy the wrong number.
If the field says Unknown, your SIM profile simply does not carry the number — common, and not a fault. Use the USSD code or the app instead. One more stored copy: if the number is linked to WhatsApp, open WhatsApp Settings and tap your name to see it under your profile.
Method 6: Call Another Phone, or Check the Packaging
Two low-tech fallbacks still work when digital methods fail:
- Call or text a phone next to you. Your number appears on that screen — a missed call is enough.
- Check the original SIM packaging or receipt. The number is printed on the card sleeve when the SIM is sold.
Photograph any new SIM’s packaging when you buy it — five seconds that ends this problem permanently.
Method 7: Ask STC Customer Care or Visit a Branch
If the SIM is damaged, blocked or will not register, go to STC.
- From any STC line, dial 900 — free, around the clock. Follow the menu, choose service for the number you are calling from, and an agent can confirm your number after verifying your identity.
- From outside Saudi Arabia, call +966 11 455 5555.
- Or visit any STC branch with your original Iqama or passport and the SIM. Staff can look up the number once your identity is verified.
A real agent verifies you, but never asks for your app password.
Check All SIMs Registered Under Your Iqama
Listing every number in your name is a different job. For that, use the Communications, Space and Technology Commission (CST — formerly CITC) Mutasil portal, which covers all Saudi operators, not just STC.
- Open mutasil.cst.gov.sa and choose the “Inquire About My Numbers” service.
- Enter your Iqama or national ID number and your date of birth.
- If you have no mobile number for verification, select the “No” option when asked, and complete the captcha.
- Submit. The result lists every SIM registered under your ID, with the operator for each line.
You may also see an SMS option mentioned for STC lines — sending 9988 to 900 for your registered numbers. Treat it as secondary: if no reply arrives, the Mutasil result is the authoritative one.
Why this matters: under CST rules, expats can hold a maximum of 2 prepaid SIMs across all operators; Saudi citizens can hold up to 10. If a shop refuses to sell you a new SIM, run this check first — an old forgotten line is usually the reason. If a listed number is not yours, ask that operator to cancel it, and escalate to CST on 19966 if unresolved.
Special Cases: Data SIMs, eSIMs and Dual-SIM Phones
- Data-only and Quicknet SIMs: the number still exists — it is how STC identifies the line. Put the SIM in a phone and dial *150#, or send the free *177* message from Method 2. Data lines also appear in the mystc app under the same ID.
- STC eSIM: treat it like a normal line. *150# works the same way if the eSIM profile is active and set as the line you are dialling from. If USSD fails, use the mystc app.
- Dual-SIM phones: most failed checks are simply the wrong line. Set the STC SIM as the calling line before dialling, and confirm in Settings which slot or profile is labelled STC.
If You Also Use Another Saudi SIM
Every Saudi operator has its own number-check code, and the codes do not cross over:
| Operator | Number check code |
|---|---|
| STC (including Jawwy) | *150# |
| Mobily | *222# |
| Zain | *144# |
| Lebara | *000# |
Jawwy runs on STC, so it answers to the same *150# code. If you top up a Jawwy line as well, the separate Jawwy balance check code guide is useful, because balance codes and number codes are different things.
For a second line on Zain, the full Zain SIM number check code walkthrough covers that network in detail. And if family members use Lebara, keep the Lebara balance check code reference handy for the day their credit runs out mid-call.
All Methods at a Glance
| Method | Needs internet | Needs balance | Works abroad |
|---|---|---|---|
| Dial *150# | No | No | Sometimes |
| Please Call Me *177* | No | No | No |
| mystc app or portal | Yes | No | Yes |
| Phone settings | No | No | Yes |
| Call another phone | No | Usually | No |
| Customer care 900 | No | No | Use +966 number |
| Mutasil portal (all SIMs on Iqama) | Yes | No | Yes |
What to Do If *150# Is Not Working
Work through this list before assuming the SIM is dead:
- Check the signal. USSD needs a live STC connection — move out of a basement or lift and retry.
- Check the SIM slot. On dual-SIM phones, redial with the STC line placing the call.
- Restart the phone. A SIM in a new handset can take a few minutes to register fully.
- Reseat the SIM: remove it, wipe the contacts gently, reinsert and restart.
- Try a no-code method: Settings, then the mystc app, then the *177* message.
- Rule out an inactive SIM. A prepaid line left unused for a very long time may be deactivated — only STC on 900 or a branch can confirm its status.
If Settings also shows Unknown and the app has no line under your ID, the SIM may never have been registered in your name — a branch visit with your Iqama is the fix.
Tips So You Never Lose It Again
- Save the number in your contacts as “My STC Number” the moment you find it.
- Keep the SIM packaging photo in your gallery or cloud.
- Stay signed in to mystc — your number is one tap away.
- Run the Mutasil check once a year, so the lines under your Iqama are only ever yours.
Frequently Asked Questions
Q: What is the STC SIM number check code in Saudi Arabia?
A: Dial *150# from the phone holding your STC SIM and press call. Your number appears on screen in seconds, with no balance or internet needed. If the menu shows in Arabic, press 2 for English.
Q: Can I check my STC number without any balance?
A: Yes. The *150# code works at zero balance, and so does the free Please Call Me message — dial *177* followed by a friend’s number and #. The mystc app also works over Wi-Fi without using SIM credit.
Q: Does *150# work on prepaid, postpaid, data SIMs and eSIMs?
A: Yes — it is used across STC line types: Sawa prepaid, postpaid, Quicknet data SIMs and STC eSIMs. For a data SIM, insert it into a phone first, then dial.
Q: How do I check my STC number on an iPhone?
A: Dial *150# in the Phone app, check Settings, then Phone, then My Number (or General, then About), or read the number on the mystc app dashboard. On dual-SIM iPhones, look for the line labelled STC.
Q: How do I check my STC number from outside Saudi Arabia?
A: Use the mystc app or portal over Wi-Fi — both show your number from anywhere, and Phone Settings works offline abroad. USSD codes are unreliable while roaming, so do not depend on *150# outside the Kingdom.
Q: How do I check all SIM cards registered under my Iqama?
A: Use the CST Mutasil portal at mutasil.cst.gov.sa: choose Inquire About My Numbers, enter your Iqama and date of birth, and it lists every SIM in your name across all Saudi operators.
Q: What is STC’s customer care number if nothing works?
A: Dial 900 free from any STC line, at any hour. From abroad, call +966 11 455 5555. Have your Iqama ready — the agent verifies your identity first.
Conclusion
An STC SIM number check is a ten-second job once you know the order: *150# first, the free *177* message or the mystc app next, and phone settings, a nearby handset or care on 900 if the line itself misbehaves. Save the number the moment it appears, and a forgotten number stops being a problem for good.