Unlock Samsung i337Z Galaxy S4 for FREE
If you need to unlock a Samsung i337Z Galaxy S4 from home, you should call the network provider who has sold you the device, because it is the only way to obtain the SIM network unlock PIN for free. You must know that you need to fulfill the carrier's requirements, such as being the cell phone plan owner.
Our company is dedicated to calculate unlocking codes by IMEI, we work with official unlocking servers and we send the same code as the carrier.
How to introduce the SIM network unlock PIN?
The easiest way to unlock a i337Z Galaxy S4 is to get the official unlock code thanks to our Samsung servers, when you put SIM cards from other network providers, the phone will require the unlock code, if you want to get it in a few hours, order it and we will send it to your email.
We must indicate that sometimes the unfreeze MCK code is needed (when attempts are wasted, the mobile will prompt the - SIM network PIN blocked. Enter SIM network PUK - ). Other different case, is if you need to use your phone in a different continent, in this case it will be requested the regional code RGCK, you should not worry, our company already knows these cases and always send you the necessary codes for a perfect unlock.
Is the re-lock possible for my Samsung i337Z Galaxy S4?
Certainly not, our unlocks are official and forever, you can update Android without any problem.
Can I use my phone worldwide?
You can use your i337Z Galaxy S4 with any SIM card from Australia and abroad, such as Optus, Vodafone network providers.
Why doesn't my i337Z Galaxy S4 allow me to make calls?
When a i337Z Galaxy S4 does not reject your new SIM card but does not allow you to make calls, it is most likely that the IMEI has been blacklisted. You need to contact with the carrier to solve it.
How to unlock a Samsung i337Z Galaxy S4 if doesn't ask for unlock code?
Some AT&T, Cricket, metroPCS and T-Mobile mobile phones in the USA do not require an unlock code, they are locked with an app pre-installed in the device called Device Unlock, this app is already installed by default in the device. You have to buy the unlock and we take care of the approving authorization to unlock it. Once approved you only press the Permanent Unlock button and it will be unlocked forever.
Normally a Samsung from Sprint, Verizon, Tracfone, Boost Mobile, StraightTalk or Simple Mobile from United States does not request the network unlock code, these smartphones are blocked by the carrier customized firmware. We can remove the network restriction for these cells, but it must be unlocked through software and sometimes with remote help from one of our technicians.
We can unlock any Samsung i337Z Galaxy S4 version
