How PrivateSIM works to protect your phone number

Telco
May 13, 2025
  •  
By 
Faw

Your mobile number is more than just a contact — it’s a gateway to your digital life. However, when it ends up in the wrong hands, it can expose you to spam, scams, and privacy risks. This is where CelcomDigi’s PrivateSIM comes in, offering a solution that protects your number and keeps your personal information secure from the start.

How PrivateSIM works

Every time you share your mobile number online — whether it's for receiving TACs, making online purchases, or filling out forms — you open the door to potential spam, scams, and unwanted tracking. PrivateSIM helps you stay in control by giving you a dedicated secondary number you can use for these everyday interactions.

This means your real number stays hidden from third parties, reducing the risk of it being leaked, sold, or targeted. You get the freedom to engage online without worrying about exposing your personal identity.

When to use PrivateSIM

Use PrivateSIM whenever you want to keep your real mobile number private:

  • Job applications: Share a secondary number on your resume or job sites to separate recruiter calls from personal ones.
  • Online contests and giveaways: Sign up without worrying about follow-up promotional spam or unexpected marketing texts.
  • Second-hand marketplaces: Post listings on platforms like Mudah or Carousell using a separate number — no random messages once the deal is done.
  • Delivery apps and ride-hailing apps: Protect your number from being stored, shared, or misused by third-party drivers or platforms.
  • Social and dating apps: Chat off-platform with peace of mind — and walk away without drama if you're not feeling a connection.
  • Short-term rentals & booking: Use a temporary contact number for bookings, confirmations, or event registrations.
  • Trying out new apps or platforms: Sign up, get your OTP, and test the waters — without committing your real number to their database.

How to activate your PrivateSIM

Activating your PrivateSIM is quick and easy:

  • Step 1: Visit the CelcomDigi Online Store, ensure your device supports eSIM, and click 'Confirm'.
  • Step 2: Verify your identity by entering your principal Postpaid number, scanning MyKad, and completing face recognition.
  • Step 3: Ensure you have an available supplementary line slot and choose your plan.
  • Step 4: Select your new eSIM number and click 'Check Out'.
  • Step 5: Review your order and choose a payment method.
  • Step 6: Receive a confirmation email with eSIM activation instructions
  • Step 7: Scan the QR code and follow the setup instructions in your email.

Watch the video below for a full tutorial:

Learn more about PrivateSIM

Discover all there is to know about how PrivateSIM can protect your number and enhance your privacy today!
Learn more


PrivateSIM offers a simple and effective solution to protect your privacy in a world where sharing your mobile number is often unavoidable. By using a secondary number for various interactions, you can reduce the risk of spam, scams, and unwanted exposure. Activate your PrivateSIM today and take control of your mobile privacy with ease!

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