How our online NCK Tool works (for free)Our NCK Tool (Network Code Key) generates an unlock code for Oppo A57 4G using your smartphone’s IMEI number (International Mobile Equipment Identity) – a unique identifier that every phone has. The process is straightforward. The tool uses a legal backdoor into your network’s database to retrieve the information it needs. Then it instantly generates the right Oppo A57 4G unlock code for your phone.
Next, your special Oppo A57 4G unlock code is stored on our servers and made available for you to easily download. As well as that unlock code, the NCK Tool assembles a set of instructions for you. Then you can quickly unlock Oppo A57 4G for free. It doesn’t matter if the IMEI is blacklisted – the process works on all phones.
No need to download or install an app that might invalidate your Oppo A57 4G warranty or even damage it. Everything is done online. All you have to do is browse to our NCK Tool and follow the simple steps you will find there. And it’s totally free to obtain the unlock code.
The method our NCK Tool use to unlock your phone is exactly the same as what you carrier would do – it’s the officially approved technique. All we need from you is your phone’s IMEI and then we can trigger the unlock procedure.
Your unlocked Oppo phone will be fully functional again. You will be able to use all of its features that were available before it was unlocked. Nothing is removed or downloaded. You can then update your apps and your version of Android if you wish without any hassles.
Unlock Oppo A57 4G using IMEI for freeThe procedure to unlock Oppo A57 4G for free is so simple, it’s child’s play. No technical expertise required whatsoever. Our NCK Tool will ask you to enter a few things, such as your phone’s IMEI code and its network. Let’s look at the steps involved:
Step 1. Tap in your phone’s IMEI number
- You phone has a unique 15-digit IMEI number that identifies it. Our NCK Tool needs that to access the relevant information in your carrier’s database. Enter it carefully when requested. To get it, dial *#06#. Step 2. Choose Country and Network
- Next it will ask you to select the country and the carrier (network) that your phone is currently locked to. If they are not in the list, or if you simply don’t know for sure, then select WORLDWIDE for both the country and the carrier. Step 3. Generate your special Oppo A57 4G Unlock Code
- The NCK Tool takes those 3 pieces of information (your phone’s IMEI, country and carrier) and works its magic to look up the relevant databases for you. It may take as long as 5 minutes, so please be patient. It then gives you your special unlock code and also a complete set of instructions about how to use the code to unlock your Oppo A57 4G free. .