Unlocking Sony ST21i

For unlock Sony ST21i 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.

Select your network


UNLOCK Sony ST21i

 

What our customers say about unlocking

  • I am very pleased with your service. Thank you

    mell - 2018-10-04 09:54:44

  • is ok now. thank you,

    Daniel - 2017-08-25 20:16:09

  • Very good service, recommended.

    Attila - 2016-10-08 08:53:51

  • Worked like a charm

    Paulo - 2016-09-23 20:57:19

  • All Ok, works perfekt.

    claudio - 2015-11-17 21:26:47

Unlocking instruction for Sony ST21i ?


How to enter a network unlock code in a Sony ST21i:

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 ST21i 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 ST21i 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 ST21i.
These messages will appear on the screen of your Sony ST21i when you insert an unaccepted simcard.
Sony ST21i has a limited amount of unlocking attempts. Usually all Sony ST21i have 5 tries. If your Sony ST21i has a blocked code counter, there are no tries left, you cannot unlock this device by code.
Important !!! Sony ST21i 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 ST21i 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 ST21i usually asks for this code as soon as you insert an unaccepted simcard ( from a different network ).

Comments

2020-02-27 08:54:22 Łukasz

Błyskawiczna realizacja zamówienia. POLECAM i oby tak dalej jak zawsze.

2018-10-05 08:53:26 Piotr

Wszystko super. Xperia tipo. Szybko i sprawnie.

2018-10-04 09:54:44 mell

I am very pleased with your service. Thank you

2017-12-06 14:14:50 Tomasz

Polecam stronkę kod dostałem w ciągu 5min

2017-08-25 20:16:09 Daniel

is ok now. thank you,

2017-03-31 13:01:15 Ryszard

Kod otrzymałem w kilka minut, działa

2016-10-17 12:53:25 Artur

Mała Xperia od Orange odblokowana. OK

2016-10-08 08:53:51 Attila

Very good service, recommended.

2016-10-07 15:35:24 Arkadiusz

wszystko działa

2016-09-23 20:57:19 Paulo

Worked like a charm

2016-09-06 14:11:10 Jarosław

Wszystko działa ok😀

2016-09-05 18:18:49 Jarosław

Wszystko działa ok😀

2016-07-14 16:11:44 Francisco

Todo bien

2016-06-20 06:54:26 Michał

Polecem Simlock usuniety szybko i bez problemów.

2016-06-10 12:13:55 Dorota

szybko i sprawnie

2016-05-04 15:47:04 Grzegorz

Zamówienie zrealizowane ekspresowo (2 min.), otrzymany kod prawidłowy. Polecam wszystkim korzystanie z usługi.

2016-03-20 17:43:55 piotr

ok

2016-02-14 21:02:11 Ernest

Bom Service qui funcionne biem BRAVO

2016-02-12 10:57:52 kRISSSS

polecam wszystkim szybko sprawnie tanio instrukcja postępowania w przypadku ściągania simloca 1 klasa

2016-01-14 17:56:38 AGNIESZKA

No co tu dużo pisać.......szybciutko i zgrabnie załatwiona transakcja .