https://community.o2.co.uk/t5/Tech-Support/NCK-for-an-unknown-network/m-p/1722279#M48707 <P>Hi,&nbsp;</P><P>&nbsp;</P><P>I am an o2 sim only customer, I have purchased a refurbished phone from an online retailer and it has arrived locked and asking for an NCK code, I have contacted the retailer and they can't help other than a refund which code take up to 30 days. Can 02 unlock this even if they don't know which network it is locked too?</P><P>&nbsp;</P><P>thanks</P><P>&nbsp;</P><P>Joe&nbsp;&nbsp;</P> Wed, 05 Jun 2024 08:59:21 GMT Joe901 2024-06-05T08:59:21Z https://community.o2.co.uk/t5/Tech-Support/NCK-for-an-unknown-network/m-p/1722279#M48707 <P>Hi,&nbsp;</P><P>&nbsp;</P><P>I am an o2 sim only customer, I have purchased a refurbished phone from an online retailer and it has arrived locked and asking for an NCK code, I have contacted the retailer and they can't help other than a refund which code take up to 30 days. Can 02 unlock this even if they don't know which network it is locked too?</P><P>&nbsp;</P><P>thanks</P><P>&nbsp;</P><P>Joe&nbsp;&nbsp;</P> Wed, 05 Jun 2024 08:59:21 GMT https://community.o2.co.uk/t5/Tech-Support/NCK-for-an-unknown-network/m-p/1722279#M48707 Joe901 2024-06-05T08:59:21Z https://community.o2.co.uk/t5/Tech-Support/NCK-for-an-unknown-network/m-p/1722283#M48708 <P>No, it has to be unlocked by the network that locked it&nbsp;<a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/5483966">@Joe901</a>&nbsp;</P> <P>Was it advertised as unlocked by the retailer you brought it from? If so, they need to replace it with one that IS unlocked, or you need to send it back...</P> Wed, 05 Jun 2024 09:10:57 GMT https://community.o2.co.uk/t5/Tech-Support/NCK-for-an-unknown-network/m-p/1722283#M48708 gmarkj 2024-06-05T09:10:57Z