National Telecommunications Commission

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    Date: 2023-03-19 22:09:58.405404


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    Date: 2023-03-20 15:14:18.052018

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BLocking my lost Sim

Requested from NTC by F. Duropan at 10:09 PM on Mar 19, 2023.
Purpose: Blocking Sim Card.
Date of Coverage: 03/19/2023 - 03/19/2023
Tracking no: #NTC-729090782580

Duropan 10:09 PM, Mar 19, 2023

HI I would like to block my lost sim card. It is already registered. Because I lost my Phone VIVO. This day.
Please do response.
Thank You.

Daquioag 03:14 PM, Mar 20, 2023

March 20, 2023

Dear Ms. Duropan,


Thank you for your request dated Mar 19, 2023 10:09:58 PM under Executive Order No. 2 (s. 2016) on Freedom of Information in the Executive Branch.

Response to Request

This office finds that your request is a frontline service transaction and is not considered as FOI request. However, to extend our services, be informed that NTC has no capability to locate/track the stolen/lost cellphone  together with sim card number but we can request it for blocking.

For further guidance, please take note of the following  reminders:

For complaints on TEXT SCAM, illegal and threatening messages you may visit the website at for you to lodge your complaint.

For complaints and concerns related to SIM registration, you may contact NTC's 24/7 consumer hotline 1682 or DICT's complaint center hotline 1326 for that matter. 

For postpaid subscribers you may report your lost cellphone unit immediately to the concerned service provider and also to the following contact details for us to request it to other service providers for blocking: 

Consumer Welfare and Protection Division (CWPD)
National Telecommunications Commission, 
BIR Road East Triangle, Diliman Quezon City. 
Telephone Number:  02-89213251: 02-89267722: 02-89204464
Email address:

Also for a complaint regarding poor services of telecommunications, radio/TV broadcast, and cable services and unfair billing statements, after fifteen(15) workings days that you filed your complaint to the concerned company and there is no action taken to your complaint, you may also report it to the above contact details.

For your convenience and further details, you may call first the above telephone numbers, it is available from Monday-Friday 8:00 AM-5:00 PM. You may also visit the website of NTC at, for you to know the addresses of the NTC Regional Offices closer to your location where you can file your complaints regarding telecommunications services.

You are also advised not to disclose the IMEI No. of your lost cellphone in this portal but you may submit it directly to the concerned service provider or to NTC Office nearest to your location.

Further, for the NTC, to accept your request for blocking of lost/stolen cellphone, submit the following requirements:

1. Duly accomplished and notarized AFFIDAVIT OF OWNERSHIP AND LOSS WITH UNDERTAKING        
     [Form No. NTC 1-24]download at
     Note: The Affidavit of Loss must indicate the IMEI of the mobile phone and/or the SIM to be blocked.

2. Proof of Ownership, ANY of the following:
    2.1 Copy of Official Receipt of the mobile phone
    2.2 Box of the mobile phone with International Mobile Equipment 
           Identity (IMEI)
3. Copy of valid Identification
    3.1 Any government-issued ID or Passport
    3.2 For students, school ID
    3.3 For cases when ID is not available, Birth Certificate OR NBI 

Supporting Documents for Representative(s)
1. Authorization letter duly signed by the applicant and valid ID of the authorized representative.

Your right to request a review:

If you are unhappy with this response to your FOI request, you may ask us to carry out an internal review of the response by writing to:

National Telecommunications Commission
BIR Road East Triangle Diliman Quezon City

Your review request should explain why you are dissatisfied with this response and should be made within 15 calendar days from the date when you received this letter. We will complete the review and tell you the result within 30 calendar days from the date when we receive your review request.

If you are not satisfied with the result of the review, you then have the right to appeal to the Office of the President under Administrative Order No. 22 (s. 2011).

In conclusion, we would also encourage you to copy the link below and open it to your URL or address locator for you to access the Feedback Survey, for us to know how we assisted/served you.

Thank you.

Respectfully yours,

FOI Officer

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