SUN SIM Registration Online 2025 [Official Link]

The SIM Registration Act requires everyone to register their SIM cards. The process of SUN SIM registration is straightforward, just like TM SIM registration. You can register your SUN SIM card online via the portal or app, or in physical stores.

SUN SIM Registration Methods

Three methods are available for SUN SIM registration. Details are as follows:

A step-by-step tutorial, along with screenshots, is provided below:

Online SUN SIM Registration

You can register your SUN SIM card online using the app or the official portal. However, the registration process is the same for both. Here’s how to do it:

1. First, go to the SUN SIM official portal by clicking the registration link below. This will lead you to the Smart SIM Registration Portal.

2. On the homepage, you will see a field to enter your mobile number. After entering it, check the box to agree to the terms and conditions, then click Send OTP.
3. You will receive an OTP on your mobile number. Enter it in the field provided and click Verify OTP. For Wi-Fi users, instructions are provided on the homepage to retrieve the OTP.

2. Select the type of user for which you want to register your SUN SIM.
3. Now, enter all the required information, which includes:

6. Upload a clear photo of your ID and scan your face for verification purposes.

6. Review all the information and ensure its accuracy. Check the box to agree with the privacy policy.
7. Once done, submit the registration by clicking the Submit button.
8. Upon successful registration and activation, you will receive a notification confirming, “You have successfully registered your SIM.” The message includes a reference number. Be sure to save it for future use.

Always use the official SUN SIM portal and app to register SIM card SUN. Never use and third party sources and links SIM registration.

Register via SMS

You can also register your SIM card using the SUN SMS registration method. Here’s how to do it:

1. Open your messaging app, type “REG”, and send it to 5858.
2. In response, you will be asked to provide the following details:

3. Provide all the details accurately and follow the on-screen instructions.
4. Once the application is processed, you will receive a confirmation message.

Only use the official SUN SIM registration number (5858). Avoid using any other number to avoid potential risks.

Don’t worry about the 2025 GOMO registration process—just click on GOMO SIM registration and follow the simple steps.

Register SIM at Stores

If you want an in-person guide to register your SIM, visit your nearest Sun/Smart store. Bring all the required documents along with you.  Ask the attendant for SIM registration. The attendant will guide you and help you to register your SIM card. 

As a Sun SIM user, I always prefer registering SUN SIM online through the portal. This is because the process is simple. However, you can use any of the above methods based on your convenience. All the methods are easy and safe.

Requirements for Sun SIM Registration

The requirements differ for Filipino citizens, minors, corporations, and foreigners. The requirements are as follows:

Filipino Citizens

Filipino citizens must provide the following information:

• Valid government-issued ID (e.g., Passport, PhilSys ID, Driver’s License, SSS ID, Voter’s ID)
• Personal details: Full Name, Birth Date, Gender, Address

Companies

Companies must provide the following documents and information:

• SEC or DTI Certificate of Registration
• Board Resolution or Special Power of Attorney (SPA)
• Valid government-issued ID of the authorized representative

Foreigners

Foreign nationals must submit the following documents and personal details:

• Valid passport (bio-page and visa pages)
• Proof of Philippine address (hotel booking, affidavit, etc.)
• Return/departure ticket (for tourists)
• Additional documents (ACR I-Card, Employment Permit, Student ID), depending on the type of visa
• Personal details: Full Name, Nationality, Passport Number, Philippine Address

SIM Registration Errors

Many users encounter the “SIM registration failed” error. This error occurs for several reasons. Here is a detailed guide along with solutions for this issue:

By following the above precautions, you can resolve the “SIM registration failed” issue. If you are facing any other specific issue, contact Sun SIM customer support.

Why Sun SIM Registration Is Necessary

Due to the SIM Registration Act, every Sun SIM card user must register their SIM card. Otherwise, they will be deactivated and cannot be used. A deactivated SIM card is completely useless and cannot be used for calls, SMS, or internet data. Therefore, it is necessary for everyone to register their SIM card.

Keep in mind that once the SIM is deactivated, you have five days to reactivate it. After five days, it will be permanently deactivated.

In addition to that, SIM registration provides security and secures users from online fraud and crimes. Therefore, you must register your Sun SIM card and enjoy a smooth network.

Sun SIM Customer Care

The Sun SIM support contact details are as follows:

Sun SIM Customer Care Numbers

Contact Sun SIM Customer Care via any of the following numbers:

📞 Sun SIM Main Customer Service: +63 2 8397 8888
📞 DMPI Trunkline: +63 2 8395 8000
📞 Sun Broadband Wireless Hotline: +63 2 8395 3333
📞 Sun Postpaid Elite Plan Hotline: +63 2 8395 8888

Email and Facebook Contact Information

Contact Customer Care via email or Facebook using the details below:

💌 General Customer Service: [email protected]
🌐 Facebook Customer Service: [email protected]

You can contact Customer Care for assistance with any issues.

FAQs

Conclusion

Registering your Sun SIM is a straightforward process. You can register online through the Smart portal or app, or visit a Smart store for assistance. Note that some older SIM cards purchased before the SIM Registration Act may not be eligible for registration. If you encounter any issues, please contact Customer Care.