How to lock the direct long distance dialing of your PLDT phone

My mother-in-law called me up this morning and asked how she could prevent others to make a long distance moving call on her PLDT (Philippine Long Distance Telephone Company) phone. I had no idea how to do it, so I researched the internet on what to do. I found out that these are the steps to lock the long distance feature of a PLDT phone. I am posting it here just in case others might find this information useful too.

Take note that before you do this make sure your phone is set to “Tone mode” (By default all phones are set to tone mode)

1.) Press *85* and your present 4-digit code then press * and your new desired 4-digit code then press #

Wait for the confirmation message or tone to know if your instruction has been accepted

Note: The Initial 4 digit code is 1234.

2.) To lock: press *54* and your 4-digit code then press #
3.) To unlock: press #54* and your 4-digit code then press #

If you encounter problems call 171 for assistance.

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8 Responses to How to lock the direct long distance dialing of your PLDT phone

  1. jayjay says:

    This is very useful..
    Thanks and more power..

  2. abba says:

    ang galing! tsalamat po

  3. dhey says:

    thanks a lot….very informative….

  4. mayie says:

    thanks a lot.. i really need this to lock our pldt phone coz im the one who’s paying our bill hahahahah

  5. zigfred says:

    mayie: You are more than welcome

  6. cecilia p. dumagno says:

    I have not thought of locking my pldt landline until my bill becomes higher than the usual. Thanks it helps a lot.

  7. Rey says:

    Can you help me retrieve forgot code for unlocking and locking of my PLDT Landline.

    waiting for your favorable response.

    Thanks and regards,

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