Knowledge Base

We are constantly updating our software... Please read the service description of each service as it will advice you as to which Models and Versions are accepted and not.
However it's possible to downgrade your Samsung phone version by using one of these method:
- https://www.androidpit.com/how-to-downgrade-galaxy-s5-from-lollipop-to-kitkat
- http://www.androidexplained.com/galaxy-note-4-how-to-downgrade-to-android-4-4-4-kitkat/
We recommend you to downgrade your phone BEFORE order your license, as we do not provide support for downgrading.
It's permanent unlock, and after unlock you'll be able to upgrade your phone again to the latest version of Android !

No we do not offer unbranded version of GSM Unlocking Cell Phone Unlocker software.

If you have a Galaxy S6, S6 Edge our solution is to use one TEMP ROOT exploit. Our software will try it on your cell phone automatically during the unlock process but will unroot your phone after Unlock. For any other Samsung Galaxy model our method work without Rooting and will not void Knox. It's 100% Safe and Permanent Unlock.

We use Android Debug Bridge (ADB) to Unlock your Phone, and to use this feature you need to enable USB Debugging Mode.

Our software guide you thru this process but if it's not clear we recommend following the detailed guideline of this website:
http://www.kingoapp.com/root-tutorials/how-to-enable-usb-debugging-mode-on-android.htm

To enable USB Debugging on the device. Here’s how...

                 1. If you haven’t enabled the option already, go to “Apps” > “Settings” > “About phone” and tap “Build number” repeatedly until it says “You are now a developer“

                 2. You will now have an option under “Apps” > “Settings” called “Developer options” where you can enable or disable the “USB debugging” option. 

1 - Phone must be powered on.
2. Type *#0808# and select 'DM+MODEM+ADB'.
3. Type *#9090# and choose USB (or 'DM/DUN over HSIC').
4. Reboot phone.
5. Connect USB cable, install drivers if needed.

Unfortunately this means our software cannot Auto Root your phone at the moment. You can still manually root your phone with third party software [Like PingPong, iRoot, or KingoRoot] and then use our software to Unlock It. However we cannot provide support for these Third Party rooting software so if you prefer to give up or if it’s too technical for you then please contact us by email support@gsmunlocking.biz and we will Void the license and refund your transaction.

Please right-click the icon on your Desktop and select “Run as administrator”

For any Android Cell Phone :

- http://www.kingoapp.com/
- http://www.mgyun.com/m/en
- https://autoroot.chainfire.eu/

1 - Right click the icon to launch our software, and select "Run as administrator"
2 - Make sure you remove all "Sniffer Tool" you have on your computer like USB Sharing, USB Sniffer / Logger, etc...

Yes, it’s 100% permanent Unlock, once you unlock your phone with our solution you can do whatever you like [Upgrade or Downgrade Firmware, or even install custom firmware like Cyanogen or Avatar]. Your phone will remain unlocked no matter what, for life !

1 - Make sure you install our Driver, click-here to download and install them again,
2 - Verify if USB Debugging is selected in your Samsung phone,
3 - Change USB Port of your computer until phone detected,
4 - Last resort change USB cable [most of the time cable is simply faulty].

We unlock all GSM phones Samsung, HTC and LG. In CDMA phones we have limited phones such as Sprint Samsung, Sprint LG and in Boost Mobile the HTC. We do not unlock CDMA version from StraightTalk, or Verizon at this time… It’s very important to always invest in GSM Phone whenever possible, especially if you are an international traveler to ensure you can use it worldwide. CDMA is a standard that only work with some networks from the USA, and Japan.

Service is ONLY ACTIVE and ONLINE...

                - Monday - Friday: 10AM - 9PM [EST]

                - Saturday: 4PM - 9PM [EST]

                *Since this service is provided via Remote Software method, if you order durring OFFLINE hours - you will need to wait till next business day.

You need a WINDOWS PC to complete your Remote Software Unlocks!

If you experience this error, first please make sure you that you have activated DIAG Port on the phone menu using *#0808# and *#9090#.

If you still have this issue, then please:

1. Close all applications / software on your computer that might communicate with the Samsung (ie: Kies)
2. For the time of the Unlock Process, please disconnect all unnecessary USB Device from your Computer (ie: Printer, Scanner, USB Stick, etc...)

To download the last version of our software and driver click here: GSM Unlocking Remote Software & Cable Unlock or contact us at support@gsmunlocking.biz

Unfortunately some time our software is not able to auto root your Samsung S6 or S6 Edge, in this situation you'll have to manually root your phone using one of these recommend method:

- http://forum.xda-developers.com/galaxy-s6/general/root-pingpongroot-s6-root-tool-t3103016
- http://androiding.how/root-t-mobile-s6-and-s6-edge-on-5-1-1-without-tripping-knox-counter/

And then use again our soft [our software will not Unroot your phone]
However we do understand you might find this too technical, so if you decide to give up, just let us know by email and we will Void your license and refund your transaction.

Yes, there will be a Live Tech on Instant Chat to help you with the process.

If our solution is not working and our techs can not assist you in getting your order completed successfully, then just contact us by email support@gsmunlocking.biz and we will VOID your License and refund your transaction directly to your GSM Unlocking account. No question asked ! We will take care of any refund request we receive in less than 24 Hours.