Unlocking Sony Xperia Z4 SoftBank

For unlock Sony Xperia Z4 SoftBank 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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UNLOCK Sony Xperia Z4 SoftBank


What our customers say about unlocking

  • fast service

    isaias - 2018-05-10 10:28:40

  • My phone is unlocked successfully. Very good customer service from Sim unlock

    Ramana - 2017-08-24 09:06:17

  • its good, but too expensive....

    MAINUDDIN - 2016-11-23 05:23:11

  • it's done

    MAINUDDIN - 2016-11-19 04:32:25

  • like 100% thanks

    Kenneth - 2016-09-09 19:17:44

Unlocking instruction for Sony Xperia Z4 SoftBank ?

How to enter a network unlock code in a Sony Xperia Z4 SoftBank:

1. Turn on the phone with an unaccepted simcard inserted (simcard from a different network)
2. Phone should ask for network unlock code
3. Type NCK code in order to unlock the main network like T-Mobile, Orange etc.
Type SPCK code if the phone is locked in a subnetwork like Tesco.

How to check SONY Xperia Z4 SoftBank code counter:

1. Turn on the phone whithout sim card
2. Type *#*#7378423#*#*
3. Select Service info
4. Select SimLock
5. Check where is X
6. If X is on NETWORK, SUBSET or PROVIDER and value is more than 0, you can unlock your phone.
7. If it is 0 unlock by code is NOT possible. The counter is blocked.

If the code counter shows all 0 it cannot be unlocked, because there are no tries left to unlock it.

Sony Xperia Z4 SoftBank counter

Second way to check counter

1. Turn on the phone whithout sim card
2. Lock screen
3. Press sequence: Menu, Back, Back, Menu, Back, Menu, Menu, Back
4. Select Service info
5. Select SimLock
6. Check where is X
7. If X is on NETWORK and value is different than zero, you can unlock your phone.
8. If it is zero unlock by code is NOT available. The counter is blocked.

Network unlock code or Sim pin network code is a special type of code which removes the network blockade from your Sony Xperia Z4 SoftBank.
These messages will appear on the screen of your Sony Xperia Z4 SoftBank when you insert an unaccepted simcard.
Sony Xperia Z4 SoftBank has a limited amount of unlocking attempts. Usually all Sony Xperia Z4 SoftBank have 5 tries. If your Sony Xperia Z4 SoftBank has a blocked code counter, there are no tries left, you cannot unlock this device by code.
Important !!! Sony Xperia Z4 SoftBank with a blocked code counter will still ask for a network unlock code.
Even if you enter the correct code it won't work with a blocked code counter.

The code counter can be reset only by an official Sony service.
Sony Xperia Z4 SoftBank needs different types of unlock codes to remove the network blockade.
One of these codes is a NSCK code which is used in most Japanese networks like Docomo, Softbank etc.
Those networks cannot be unlocked with the standard NCK code.
Sony Xperia Z4 SoftBank usually asks for this code as soon as you insert an unaccepted simcard ( from a different network ).


2019-12-06 09:13:08 Adrian

Super. Bardzo szybko i wszystko działa. Polecam

2019-05-07 08:46:38 arion


2018-12-05 08:35:45 Ken N

Your save my life. I could not find such service in my country. Service fee is reasonable and deivery time is adequet. Thanks.

2018-05-10 10:28:40 isaias

fast service

2017-09-11 23:23:50 Agnieszka

szybko, konkretnie i co najważniejsze wszytsko działa. Szczerze polecam

2017-08-24 09:06:17 Ramana

My phone is unlocked successfully. Very good customer service from Sim unlock

2017-05-05 15:49:00 T.M

Great. Very speedy. I recommend.

2017-04-19 10:00:18 r.m

good job

2017-01-18 14:18:53 takao


2017-01-18 01:47:46 jtake

good job thanks

2017-01-09 14:44:15 Tomo

I received the item within 24 hours from order. I am very satisfied with the perfect service. The NSCK code I needed was certainly sent. Thank you

2016-11-23 05:23:11 MAINUDDIN

its good, but too expensive....

2016-11-19 04:32:25 MAINUDDIN

it's done

2016-09-09 19:17:44 Kenneth

like 100% thanks

2016-08-20 09:05:35 Kurt

Amazing service, the NCK and SPCK didnt work at first, so i contacted them with the problem and after minutes sim-unlock sent me the NSCK code that worked. I will definitely use their service again

2016-08-01 06:48:32 Daniel

At first the provided code are NCK and SPCK which doesn't work on my device, but as I mailed about the problem the staff reply rapidly with the working NSCK code. Really helpful and smoothy service. Thanks a lot.