How to unlock a galaxy express 3 for free

How to unlock a galaxy express 3 for free

Sim Unlock code of AT&T USA Samsung Galaxy Express 3 (J120A) is available. Means, if your phone prompts for unlock code or SIM Network Unlock PIN after changing the SIM card then it can be unlocked. Our automatic system is connected with different server of Samsung and will provide the correct sim unlock code for all types of mobile phones.

Unlocking of Samsung phone by sim unlock code is the easiest and fastest method. Once the AT&T USA Samsung Galaxy Express 3 (J120A) is unlocked, you can use it with all network provider sim cards around the world. Once the phone is network-free, you can use the default sim card too. You will not loose the warranty of the phone as we do not root the phone for unlocking.

We need 15-digit IMEI of the device to receive the correct unlock code of AT&T USA Samsung Galaxy Express 3 (J120A). Correct 15-digit IMEI can be found on the Settings of the phone or you can also dial *#06# as a phone number to get the IMEI of your phone.

Before placing any order at our database, make sure that your AT&T USA Samsung Galaxy Express 3 (J120A) asks for an unlock code. To confirm, just change the default simcard with any other carrier simcard and switch ON the phone. It should prompt for network unlock code, network unlock pin or sim unlock pin.

Once you will place the order, you will get the following types of codes for AT&T USA Samsung Galaxy Express 3 (J120A):

NCK – Network unlock code to unlock the simlock of the phone.

Unfreeze/MCK – It is used to reset the unlock code counter. If you have already tried with too many wrong codes, then it will help you to reset the simlock counter.

SPCK – Service Provider Code is used to reset the second level of the lock.

How long we need to wait for a Samsung unlock code?

The approximate delivery time for a Samsung unlock code is 1 to 10 days.

The average response time for a Samsung unlock code is 2 days (based on last 100 orders).

Unlock AT&T USA Samsung Galaxy Express 3 (J120A)

We have various services for Samsung. Depends upon the country and network locked, you can choose the appropriate service. You may use the service based on the country or continent. For the AT&T USA Samsung Galaxy Express 3 (J120A), you may use Europe, USA, Canada, South America, United Kingdom, Ireland, France, Middle East or Worldwide service.

If your AT&T USA Samsung Galaxy Express 3 (J120A) comes from T-Mobile USA or Metro PCS USA, then before placing an order check about “Device Unlock App”. If in your phone has ‘Device Unlock App’ installed, then you will not find any place to enter the code. In such cases, you have to order for “Device Unlock App” for MetroPCS or T-Mobile.

How to Unlock AT&T USA Samsung Galaxy Express 3 (J120A)?

How to Enter or Send the code in AT&T USA Samsung Galaxy Express 3 (J120A)?

1. Turn OFF the phone.

2. Remove the original SIM card.

3. Turn ON with any another network provider SIM card.

4. AT&T USA Samsung Galaxy Express 3 (J120A) should prompt for an unlock code / SIM Network Unlock PIN.

5. Enter the NCK code which is provided by sim-unlock.blog.

6. If the unlock code is not accepted, then you might have already tried with too many wrong codes. Now enter the Unfreeze or Defreeze code or MCK code.

7. Unsuccessful message should appear.

8. Again enter the NCK or Network Unlock Code.

Now your AT&T USA Samsung Galaxy Express 3 (J120A) is network-free and can be used with all operator simcard.

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  • AT&T
  • Samsung Galaxy Express 3 (J120A)
  • USA

How to Enter Unlock Codes on Samsung Galaxy Express 3?

Try the following Instructions:

Make sure "Airplane Mode" and "Wi-Fi" is turned off under wireless connections if your Samsung Galaxy Express 3 is an Android device. 

Method #1:

Insert a Non accepted simcard in your Samsung Galaxy Express 3 and power on. Once finished loading your Samsung Galaxy Express 3 will ask you to enter a code, enter the Unlock Code

Note: Non Accepted Simcard is any simcard not from the original provider

Method #2:

Go to the dial screen on your Samsung Galaxy Express 3 as if you are going to make a call and press: #7465625*638*UNLOCKCODE# (8 digit unlock code)

Method #3:

Go to the dial screen on your Samsung Galaxy Express 3 as if you are going to make a call and press: #0111*UNLOCKCODE# (8 digit unlock code)

Method #4: 

Go to the dial screen on your Samsung Galaxy Express 3 as if you are going to make a call and press #7465625*638*# Once prompted for code, enter the 8 digit Unlock Code.

If Phone says, "Code Accepted" or "Network Unlock Successful" or "Not Yet Personalized" your Samsung Galaxy Express 3 is fully Unlocked

*If you are not receiving any signal after unlocking, make sure your wireless connections are turned on after unlocking the phone. Also pull the battery and restart Samsung Galaxy Express 3. 

*Please verify that you receive a prompt for the network unlock code before submitting order. NO refunds will be given if unlock code is returned and no prompt if received.

I got a Samsung Galaxy Express 3 but when I powered it up it's asking for a network unlock code and won't do anything else till I get it unlocked please help me with my problem

How to unlock a galaxy express 3 for free

Codes2unlock provides the quick and easy mobile unlocking for almost all phone manufacturers and mobile operators across world, most of the unlock codes are delivered instantly after placing an order. Our instructions are very simple and easy to follow and doesn't require any technical knowledge at all.

Disclaimer: Codes2unlock.com has no affiliation with any cell phone manufacturer or cellular service carrier and does not represent itself as such. All trademarks, logos and images are copyright to their respective owners.

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Helpful instructions

For unlock Samsung Galaxy Express 3 following options are available. If you don't know which option use for unlock your phone, please contact us. We will help you choose the right product for your phone.


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How to enter a network unlock code in a Samsung Galaxy Express 3 Entering the unlock code in a Samsung Galaxy Express 3 is very simple. 1. Start the Samsung Galaxy Express 3 with an unaccepted simcard (unaccepted means different than the one in which the device works) 2. Special unock window should appear

- For message Sim network unlock pin you should enter the codes if the following order, Unfreeze confirm, NCK confirm (please try a couple of times if the Galaxy Express 3 does not accept it for the first time)

There is also a special RGCK (regional lock code) code sometimes provided. Please use the RGCK code the same way as the NCK code. - If Service provider pin appears enter the codes in this order Unfreeze confirm, SPCK confirm (try a couple of times) 3. Samsung Galaxy Express 3 is now network unlocked !!!

* sometimes the unfreeze code is not provided by the network (check the description of chosen service)

NCK, MCK or SPCK for Samsung Galaxy Express 3 ?

In order to unlock Samsung Galaxy Express 3 network blockade, you need a NCK (network) code. If the code counter is blocked, you will need MCK (unfreeze) code as well to reset the code counter.
If Samsung Galaxy Express 3 has a blockade for a subnetwork like Tesco or Virgin you need to use a SPCK (service provider) code.

What is a Samsung Galaxy Express 3 network lock?

Most devices bought on a contract from a network provider are network blocked. It means that the Samsung Galaxy Express 3 can only receive signal from one network. If you insert a simcard from a different network, the device will ask for an unlock code, or will show the message that this simcard doesn't work. Networks that can be unlocked include: AT&T USA, Orange, EE and many more. If you want to remove a network blokade from Samsung Galaxy Express 3, please use this link:

Samsung network unlock</>.

What is unique unfreeze code (mck) ?

Phone freeze is a result of the incorrect code being inputted too many times, which means your Samsung Galaxy Express 3 is Hardlocked. You will require a Defreeze (MCK) code and a NCK code to unlock your phone.
There are different types of unlock codes for your Samsung Galaxy Express 3. One of them is called unfreeze code, which is used to reset the code counter in your device. Samsung Galaxy Express 3 usually have 3 TRIES to enter the unlock code. The biggest problem is that the phone doesn't show the code counter and there is no way to check. If you want to unlock a Samsung Galaxy Express 3 with a blocked code counter, you need the unfreeze code. The code can also be used to remove a regional blokade if you want to travel to different countries.

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