Originally Posted by davebegue
Has any one used this method to sim unlock when on stock 4.3? Still works or no? Or if you are unlocked on 4.2 will unlock survive update to 4.3?
Sent from my SGH-M919 using XDA Premium 4 mobile app
No, it won't work.
You can try this guide
that I created for people on 4.3. It's a fairly long and involved process, there is no simple way to unlock a 4.3 phone.
Edit: I should clarify, this method only works if you're region locked but carrier unlocked. It will not work if you're both region-locked and carrier locked, you will have to use my guide above or pay for an unlock code in addition to using this program if you're region-locked.