Need Help to unlock an old Virgin Mobile

[potatosoup]

I have an old Sony Ericsson K770i mobile phone but it is locked to Virgin Mobile.. 

I called Virgin Media and they told me to contact my service provider. 

Please help and let me know if O2 can send me unlock code to unlock this old Sony Ericsson mobile phone? 

I need NCK and SPCK unlock code... 

Thanks in advance. 

[MI5]

@potatosoup 

This will need to go back to Virgin I'm afraid.

Typical of them to fob you off.

On the off chance that it may work, O2 guide here Guide: Unlocking an O2 phone to use a different SIM card 

[Enlli]

That's a blast from the past.

Chances of getting a code for a 16 year old phone are slim.

Also the phone is 3G / 2G so if you intend to use it on any network that is not O2 based then it will be 2G only as there is no 3G on Vodafone from the end of this month. None on EE by March and patchy on Three as they slowly turn 3G off.

[MI5]

Slim to none at all.

A local mobile phone market stall or shop might be your best bet @potatosoup 

[Oxonian]

@potatosoup 

You could try selling it on ebay "for spares or repair" ; you might get seven or eight quid for it whilst it is locked.