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Unlock Code for Samsung SPH-A640

I Bought a Samsung SPH-A640 from a thrift store and it has a user lock code on it. I do not know the last 4 numbers of the phone so how do I do a Master Reset or Unlock this phone??

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  • timothywilso Dec 02, 2008

    i can't unlock it



  • Anonymous Jan 12, 2009

    I HAVE ALSO SAME PROBLEM THIS MODEL

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How do i master reset a samsung sph_m800b ? I forgot my lock code

Posted on Sep 24, 2009

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  • 7 Answers

Take the phone to the service provider and have them flash the phone...

Posted on Jul 24, 2009

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2 Answers

I locked it but i forgot my code how can i unlock


the default lock code is the last 4 digits of the phone number, if you didn't change the lock code yourself, it should be the last 4 digits of the phone number

Jan 23, 2010 | Samsung UpStage SPH-m620 Cellular Phone

1 Answer

Have forgotton my 4 digit user code for samsung


Try 0000 or the last 4 numbers of your phone #.

Nov 09, 2009 | Samsung SPH-M300 Cellular Phone

2 Answers

User lock code


try the last 4 digits of your cell phone number, if not i need to get the numbers at the back of your phone to unlock it for you.

Jun 18, 2009 | Samsung UpStage SPH-m620 Cellular Phone

2 Answers

Locked phone, dont know the lock code. samsung sph-m300cellular


the lock code on my samsung m300 is the last 4 digits of my number. try that, also you can try 0000. that is all i can think of.

Apr 08, 2009 | Samsung SPH-M300 Cellular Phone

1 Answer

Format micro sd in samsung sph 500 phone?


Try entering the last 4 digits of your phone number. If that doesn't work, then you (or someone else) has changed the lock code. If that's the case then you may need to bring it into the Sprint store for them to unlock it.

Feb 28, 2009 | Samsung SPH-M500 Cellular Phone

2 Answers

Cant unlock my phone


If you know your original lock code, take it in to your service provider, each code is diffrent and can only be programed manually, if you dont know your original lock code you will have to sacrific all info pics,mess,numbers, etc. by a reset... I can guide you through the steps to erase all if you lost your Unlock code, or switch back to nam1 if you know your lock code, ( when you switch back, if security is on automatic lock, password is required) intial programing code is not your Unlock code.

Apr 03, 2008 | Samsung SPH-M500 Cellular Phone

1 Answer

Sph-a640 unlock code


i have a samsung a640 and cant set up the blue tooth with it

Mar 21, 2008 | Cell Phones

2 Answers

Security Code


it is the last 4 numbers of your pcs phone number

Dec 11, 2007 | Cell Phones

2 Answers

Samsung SPH-M300


try this code hope it works for you

*2767*2878#

peace!

Nov 25, 2007 | Nokia 1100

1 Answer

Sph - A920 locked out by security code


Put the last 4 digits of ur phone number.If it not works it means that anyone change u r phones security settings.

Oct 24, 2007 | Samsung MM-A920 Cellular Phone

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