Question about Samsung SGH-E900 Cellular Phone

4 Answers

Showing INVALID SIM

I bought the mobile in London and it was working fine there. When I returned to India, and entered a local sim and switched the mobile on I saw the INVALID SIm error, although the sim works fine with any other mobile.

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  • Arnab Sen Aug 06, 2007

    I understand that, but whT I want to know is how to go about unlocking the phone? Do I have to get it unlocked from the service provider of London ( Vodafone)?

  • paresh patel Dec 15, 2007

    hi, i bought sony ericsson w200i from u.k and in india when i insert sim it show insert correct sim.

  • Anonymous Apr 06, 2008

    how do you fix your sim.On my phone i cant go to my menu.all it does is say invalid sim.it is because i typed a password wrong to many times.

    HELP PLEASE!

  • Anonymous Apr 18, 2008

    I did nothing but I want to know what I can do and what I need to do?

  • rniz May 02, 2008

    when i turn on my phone it says SIM LOCK and i typed all the passwords i can ever think of. and know idk what to do cuz ive tried the *2767*3855# and it still says sim lock when i turn it back on. WHAT DO I DO?!?!!

  • Kajan Jul 02, 2008

    I have the same problem for Samsung SGH-J600. I entered the code but still it's not working



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Try *2767*3855# this will reset the software and unlock your phone to all network, but make sure you backup all of your photos etc before tou type this code in.....Chris

Posted on Aug 08, 2007

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Try *2767*3855# this will reset the software and unlock your phone to all network, but make sure you backup all of your photos etc before tou type this code in.....Chris

Posted on Apr 18, 2008

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  • 76 Answers

Hi, a definate solution exists for the cheap chinese dual sim phones when they show invalid sim. Go to ebay and search for invalid sim.
This solution might work for other phones too, but you will have to contact the person to see if he knows about your specific phone.

Posted on Jan 11, 2010

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You need to hve your phone unlocked to take a sim from your country

Posted on Aug 06, 2007

  • scott bryan Aug 07, 2007

    you need to find a mobile phone shop they can do it they just plug into a laptop put some kind of code in and it's open to all networks cost about 10 pound in the uk

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Posted on Jan 02, 2017

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