Unlocking a Samsung SGH-X427 is a relatively easy process. In fact, I recently found a post that shows how to unlock the Samsung X427 completely free. Many unlock instructions require you to use an unlock code. The X427 however can be unlocked without one, hence why it is completely free to do.
You can also find my detailed guide on how to unlock this Samsung phone as well as many others here. Furthermore, if you have a different model Samsung phone that needs an unlock code, this article has unlock codes for over 22 different Samsung cell phones.
Here are the steps to unlock your SIM based or GSM Samsung X427 mobile phone:
Warning: Retrying this process after it doesn’t work the first 3 times could result in damage to your Samsung phone!
Unlock Samsung SGH-X427
1. Reboot your mobile phone with a SIM card from another carrier
2. At the warning message, type *#9998*3323#. A message will pop up telling you to press exit. Then hit number 7 and your phone will reboot automatically.
3. Now type *0141# and hit the send button.
4. Reboot the phone with your original SIM card.
5. At the message, type 8 zeros (00000000) and your done!
I have a SGH-X427 that I need to unlock but I don’t have a SIM card to go with it. I want to take this phone overseas and use it there but I need to have it unlocked before doing so. Any ideas on how I can do this?
Hmm, well usually when you enter the unaccepted SIM card it will ask you for an unlock code. What happens when you power on your Samsung X427 without any card in it?