Unlocking Sony ST25a

For unlock Sony ST25a 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 ST25a

 

What our customers say about unlocking

  • Excelente, el código me llegó un día después del pedido y funcionó a la perfección. Muchas gracias

    Graciela - 2015-11-14 06:36:50

  • El metodo descripto por la pagina para introducir el codigo de liberacion en el equipo no es el correcto. Tuve que contar con un chip de una empresa no autorizada para introducir el cogio a peticion del terminal.

    Matias - 2015-10-20 20:09:30

Unlocking instruction for Sony ST25a ?


How to enter a network unlock code in a Sony ST25a:

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 ST25a 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 ST25a 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 ST25a.
These messages will appear on the screen of your Sony ST25a when you insert an unaccepted simcard.
Sony ST25a has a limited amount of unlocking attempts. Usually all Sony ST25a have 5 tries. If your Sony ST25a has a blocked code counter, there are no tries left, you cannot unlock this device by code.
Important !!! Sony ST25a 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 ST25a 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 ST25a usually asks for this code as soon as you insert an unaccepted simcard ( from a different network ).

Video Help film shows what you should do, to enter an unlock code to ST25a.