Republic Act No. 11934, otherwise known as the Subscriber Identity Module (SIM) Registration Act of 2022, mandates the registration of all SIM cards with the personal details of their owners. The law, implemented through rules issued by the National Telecommunications Commission (NTC), seeks to curb scams, fraud, cybercrimes, and other offenses committed through anonymous mobile numbers. Once a SIM card is registered, it is permanently linked to the subscriber’s full name, address, date of birth, and valid government-issued identification. This linkage creates both obligations and protections for the subscriber when the registered SIM is lost or stolen.

Replacement of a lost registered SIM card is governed by the same legal framework. The Act and its Implementing Rules and Regulations (IRR) require telecommunications service providers (TSPs) — such as Globe Telecom, Smart Communications, DITO Telecommunity, and their subsidiaries — to establish a secure, convenient, and efficient procedure for replacement. The process ensures that the mobile number remains with the original registrant, the old SIM is permanently deactivated, and the new SIM inherits the existing registration data without necessitating a full re-registration. Failure to follow the prescribed steps may expose the subscriber to liability if the lost SIM is used for unlawful purposes, while strict compliance protects the subscriber’s identity and restores service promptly.

Legal Obligations of Telecommunications Service Providers

Under RA 11934 and NTC Memorandum Circulars implementing the SIM Registration Act, TSPs are legally required to:

Provide a replacement mechanism that does not require the subscriber to undergo the entire registration process again.
Verify the identity of the claimant using the same data and identification submitted during original registration.
Permanently deactivate the lost SIM upon confirmation of loss.
Transfer the registration record to the new physical or embedded SIM (eSIM) card.
Maintain records of all replacement transactions for NTC audit and law-enforcement purposes.
Offer the service through authorized service centers, dealers, or authorized digital platforms where feasible.

Non-compliance by TSPs may subject them to penalties under the Act, including fines and suspension of operations.

Immediate Actions Upon Loss or Theft

The moment a registered SIM card is discovered missing, the subscriber must act swiftly to minimize risk:

Block or Deactivate the SIM Remotely
Contact the TSP’s customer service hotline, use the official mobile application (GlobeOne, Smart App, DITO App), or access the self-service portal via another device. Provide the mobile number and basic verification details. The TSP will flag the SIM as lost, preventing outgoing calls, SMS, mobile data, and most importantly, access to linked financial services such as GCash, bank accounts, or one-time password (OTP) authentication.
Secure Documentary Evidence
Obtain a Police Blotter or an Affidavit of Loss. The Affidavit must be executed before a notary public or authorized public officer and must contain the circumstances of the loss, the mobile number affected, the date and place of loss, and a declaration that the SIM was not transferred to any other person. A Police Blotter from the nearest Philippine National Police station or barangay serves as prima facie evidence of the report.

Step-by-Step Replacement Procedure

The formal replacement process is conducted in person at an authorized TSP service center or flagship store, although certain TSPs may allow limited digital pre-processing through their apps.

Prepare Required Documents
- Original and photocopy of at least one (1) valid government-issued photo ID used during the original SIM registration (examples: Philippine Identification Card, Passport, Driver’s License, SSS/GSIS ID, Postal ID, Voter’s ID, or Senior Citizen ID).
- Notarized Affidavit of Loss or Police Blotter.
- Proof of registration (optional but helpful): screenshot or printed confirmation of the original SIM registration transaction.
- For postpaid accounts: latest billing statement or proof of account ownership.
- For corporate or shared SIMs: authorization letter from the company on official letterhead, together with the company’s SEC registration or DTI permit and the representative’s ID.
- For minors (if the registered subscriber is below 18): birth certificate and guardian’s valid ID, consistent with the original registration data.
Visit the Authorized Service Center
Proceed to any official TSP service center or accredited dealer. Present the documents and accomplish the SIM Replacement Request Form. The representative will verify the details against the TSP’s database.
Identity Verification
The TSP performs identity matching, which may include facial recognition, biometric comparison, or knowledge-based questions derived from the original registration record. This step ensures the claimant is the same person who registered the SIM.
Payment of Replacement Fee
A nominal replacement fee is collected. The amount is determined by the TSP and is generally between ₱100 and ₱500, depending on whether the SIM is prepaid or postpaid and whether an eSIM is requested. The fee covers the cost of the new SIM card and administrative processing. No additional registration fee is charged because the existing registration is transferred.
Issuance of New SIM Card
Upon approval, the TSP issues a new SIM card (physical or eSIM) bearing the same mobile number. The old SIM is permanently barred from the network. The new SIM automatically inherits the subscriber’s registration data, including linked services such as mobile wallets and OTP authentication.
Activation and Testing
Insert the new SIM (or activate the eSIM profile) and test voice, SMS, and data services. Some TSPs send a confirmation SMS or require a one-time activation code. Update the SIM in all linked applications, banking platforms, and two-factor authentication services immediately.

The entire process is ordinarily completed on the same day provided all documents are complete and match the database records. In cases of data discrepancy, the TSP may require additional verification with the NTC or a short administrative hold (usually 24–72 hours).

Special Considerations

eSIM Replacement: Subscribers using eSIMs follow the same documentary requirements. The TSP issues a new eSIM QR code for download and installation on the compatible device.
Prepaid versus Postpaid: Prepaid replacements are faster and require minimal account verification. Postpaid accounts may necessitate confirmation of outstanding balance or billing address.
Lost While Abroad: Subscribers overseas may block the SIM through the TSP’s international roaming hotline or app. Replacement must still be completed in person upon return to the Philippines unless the TSP offers an authorized overseas partner or courier service for document submission.
Corporate or Shared Plans: An additional authorization letter signed by an officer of the corporation is mandatory.
Multiple SIMs: Each lost registered SIM requires a separate replacement transaction.

Legal Consequences and Best Practices

A subscriber who fails to report a lost registered SIM promptly may be held partially liable if the SIM is later used in fraudulent transactions, as the law presumes the registered owner’s responsibility until proper deactivation is effected. Conversely, TSPs are prohibited from reactivating the old SIM once the loss is reported.

Subscribers are strongly advised to:

Keep a digital copy of their SIM registration confirmation and valid IDs.
Enable two-factor authentication methods that do not rely solely on SMS.
Regularly review linked financial accounts after any replacement.
Avoid purchasing second-hand SIM cards, which violate the SIM Registration Act and expose buyers to legal risk.

The replacement of a lost registered SIM card is not merely a commercial transaction but a legal safeguard mandated by Republic Act No. 11934 to protect both the individual subscriber and the public from the harms associated with untraceable mobile numbers. Strict adherence to the procedure ensures continuity of service, preservation of identity linkage, and compliance with national policy against cyber-enabled crimes.