Question about Samsung SYNC SGH-A707 Cellular Phone

2 Answers

Samsung M510 LOCK CODE

Forgot lock code and cannot get into phone

Posted by on

  • 6 more comments 
  • O no Sep 20, 2008

    hi, cheers for trying but my phone is cdma so it doesnt have a sim card, do you know any other ways?

  • O no Sep 20, 2008

    not these telecom ones, i have removed the battery and theres not even a sim slot, telecom at least in NZ doesnt use sim cards apart from 1 of their global roaming phones, so even if it had a slot theres no sim to take out. . .

  • O no Sep 20, 2008

    hi, i have tried default codes and no luck, i cant get into the phone without the lock so i cant transfer any info either, how do i do a master reset and will this delete all new messages and contacts? cheers

  • O no Sep 20, 2008

    how do you do a master reset with out a password? changing rating now

  • O no Sep 20, 2008

    have changed lock on start up from original last 4 digits of number that phone was on by default to a personal one, i cant get into the phone to find master reset in settings because of password keeping me out. (have'nt changed master reset password though, just dont know how to get to the place where i can enter it)

  • O no Sep 20, 2008

    i removed the battery for a few minutes, then reinserted the battery, turned the phone back on and tried the lock codes but it just says invalid lock code

  • Anonymous Dec 10, 2008

    I bought a new Samsung SPH-M510 cell phone 7 days ago. It's connected to the NZ Telecom prepaid network. It was working fine for 3 days then I got an error code 97 when trying to text. I rang and spoke to someone at Telecom voice services... and followed their instructions...which were to turn off the phone then turn it on again. I then entered my lock code successfully. Next I was instructed to turn off the phone and take out the battery. The operator then took my number off the system, then put it back on again. (I assume they meant my cell phone number). I was then told to turn on the phone, replace the battery and enter my lock code...which I did...but my lock code did not work and the screen read "invalid lock code". I have tried it several time and entered the default codes I have been told about bu Telecom...0000, 9999, 1234 and the last 4 digits of my cell phone number....but nothing works. Please help me....I really need to have a working cell phone ASAP.
    By the way...what is an Error Code 97 anyway?


  • Anonymous Dec 28, 2008

    I set it Personal code and now i forgot it and cnt get in at all!


2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

Type in ##3282# then go to advanced, view and scroll down till you get to lock code and the code will be displayed

Posted on Jul 18, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,263 Answers

If you have not used your own personal code then the default code is 0000,1234,or9999 i have the same phone so i know this works. if you have your own personal number than remove the sim card and do a full reset this will keep you from losing your stored data.....please rate this thanks

Posted on Sep 20, 2008

  • 4 more comments 
  • Ronald Mueller
    Ronald Mueller Sep 20, 2008

    it does have a sim it is located under the battery. have you tried the default unlock codes 0000,1234,or 9999?

  • Ronald Mueller
    Ronald Mueller Sep 20, 2008

    so the default codes have not worked? do you have a memory chip? if you do transfer your vital info to it and then do a master reset

  • Ronald Mueller
    Ronald Mueller Sep 20, 2008

    I'm afraid that you will lose your contact info if it had a sim card and you did a reset, however considering that your phone doesn't i'm sure that it would be just like rebooting a computer. this is the only thing i can think of at the present time. the only other thing you could try is have your service provider ping the phone and do a unlock from there side of things. all cell phones have gps and the provider can if they want shut your phone on and off from their end. this is a long shot. I can't promise you that you will not lose your info on the phone if you do a master reset.. one other thing the unlock is a 4 digit code have you tried to remember what it might be? something like the same number as your atm pin or or credit pin or something simple. hope this has been helpful.. could you please change the rating i would appreciate it...thanks

  • Ronald Mueller
    Ronald Mueller Sep 20, 2008

    the pass word will be 0000,1234,or9999 I assume that you never entered your own personal one on this option

  • Ronald Mueller
    Ronald Mueller Sep 20, 2008

    don't turn the phone off just remove the battery and let it sit for a minute then reinsert the battery tell me what happens

  • Ronald Mueller
    Ronald Mueller Sep 20, 2008

    i would then try and have the service provider ping your phone they should be able to reset it from their end this is a long shot but i'm at a loss of ideas for this.


2 Suggested Answers

  • 118 Answers

SOURCE: Samsung

Take it into the telecom shop

Posted on Sep 07, 2008

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

8 Answers

I forgot phone lock code of samsung c3303, please help.

i forget my c3303 samsung phone lock code

Dec 16, 2010 | Cell Phones

1 Answer

Forgotten user lock pin number

type on the main screen "##3282#"
go down to "advanced"
then press ''view''
click right 5 times, and it reveals your lock code

May 16, 2009 | Samsung SPH-m510 Cell Phone

1 Answer

Forgot my phone lock code cant use my phone how do i get rid of the phone lock its a samsung

Unless you've changed it, it is usually the last four digits of your phone number by default

Mar 25, 2009 | Samsung SPH-m510 Cell Phone

1 Answer

My phone Samsung envy got wet today and now it is showing offline, how do I fix it

quit out of the lock code part where it asks for it then dail ##3282# = (##data#)
then press 5 once in the menu then press 1 scroll down till you find lock code which will show what your lock code is :)

Mar 21, 2009 | Samsung SPH-m510 Cell Phone

1 Answer


Take it into the telecom shop

Sep 07, 2008 | Samsung SYNC SGH-A707 Cellular Phone

7 Answers

Can't remember my phone lock code

i dont remember my phone lock code sonyerickson w800i thanks

May 19, 2008 | Sony Ericsson W800i Cellular Phone

Not finding what you are looking for?
Samsung SYNC SGH-A707 Cellular Phone Logo

Related Topics:

2,238 people viewed this question

Ask a Question

Usually answered in minutes!

Top Samsung Cell Phones Experts

Fotis Papastamatiou

Level 2 Expert

96 Answers

Bill Long

Level 3 Expert

587 Answers

Mike Cairns
Mike Cairns

Level 3 Expert

3053 Answers

Are you a Samsung Cell Phone Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides