Question about Samsung SGH-d407 Cellular Phone

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I have a T-mobile sim and I need to unlock my Samsung SGH-D407.

I bought a rebel sim card so that I can unlock my iphone 3G using my T-mobile sim card. However, I need to reset the network keys on my t-mobile sim card using a 2G phone in order for the rebel sim card to work properly in my iphone 3G. So I have a Samsung SGH-D407 (an AT&T phone) and I tried to put my T-mobile sim card in it but it just tells me "Wrong Card." So now it seems that I need to be able to unlock the Samsung phone now in order to be able to reset the network keys on my T-mobile sim card so that I can, in turn, use the T-mobile sim card simultaneously with the rebel sim card in my iphone 3G in order for it to work.... Whew!!! So basically, I think I need an unlock code for the Samsung SGH-D407 to be able to move forward with this. Can someone please help me?

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  • sbeacham Jan 17, 2009

    Thank you so much for your help with the unlock code. I was able to unlock the Samsung phone temporarily with no trouble at all. However, for some reason I'm still having issues getting the rebelsimcard to work properly with the iphone 3G. What happens is that it'll work for like a day and then I'll get a no signal sign again. I've tried contacting a rebel sim card support rep and they're the ones who told me that I have to reset the network keys in a 2G phone. I've done that now and the phone still stops working after about a day. So I'm beginning to feel like I waisted my money. I'm not sure if you know anything about the rebel sim card, but do you have any suggestions as far as how to get my phone to keep working? I'd appreciate any help with that. Thanks a lot!

  • Anonymous Mar 27, 2014

    Need some help please.



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WOW! what a process! I don't know how you kept track of all that but , good job! Try this. It's a maybe, but better than nothing,

Put a non-accepted SIM Card and turn it on. Type *#9998*3323#. Press Exit. You will get a new menu. Select Malloc Fail.

In newer phones:

Posted on Jan 16, 2009


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How do I gain access to the unlock code for the samsung flip phone that i currently have in my possession?

Hi. You can get the accurate unlock code for your Samsung SGH-D407 model mobile phone from at affordable cost. Good luck.

..............UNLOCKING INSTRUCTIONS..............

1 - Switch ON your Samsung SGH-D407 with a NOT ACCEPTED SIM Card.
2 - Compose : #7465625*638*CODE# (or *#7465625*638*CODE#).


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