There are usually two ways for you to unlock your smartphone, one is to
pay someone else to do it for you and the other is to do it yourself
which, most of the time, requires you to do crazy stuff and may lead to
bricking your phone. Luckily for SGN2 users, there’s a free and
not-so-risky way to unlock their 5.5-inch handset.
This SIM unlock doesn’t require rocket science to pull off. Just
follow these simple steps below correctly and you should be able to use
any SIM card from any telco in a jiffy. Let’s begin.
1. Launch the Phone App (Dialer) on your SGN2 and key in this combination
*#197328640#. After pressing those keys your phone will enter Service Mode which looks something like this:
2. In the Service Mode select UMTS > Debug Screen > Phone Control > Network Lock > Options
3. Under Options, select Perso SHA256 OFF. Give it some time to do its thing, maybe around 30-45 seconds.
4. Then go back by pressing Menu button (the left soft button besides
the Physical Home button) and select Back. By doing so, you should be
inside the Network Lock screen.
5. Choose NW Lock NV Data INITIALLIZ, the fourth one in the selection. Give it around a minute or two to run its course.
6. After that, Reboot your device and try out a different SIM card to see if it works!
Note that in steps 3 and 5, you will not see any confirmation screen
that the action was completed, so you have to be a little patient when
doing this. But don’t worry if you proceeded to the next step too soon
or too late as it will not have any significant effect (like bricking)
on your phone. That’s the beauty of this unlock; it’s free and easy!{
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