SIP and 6121 Classic Product Code

[lifestyle]

Hi,

I bought my Nokia 6121 Classic from M1 in Singapore.

However, after setting up the "SIP Settings" on the phone, it does NOT connect to my SIP service provider.

I checked with Nokia and the girl told me that the phone was not designed for VoIP. Yet I can use Fring, Gizmo and Talkonaut etc. successfully.

Thus, I suspect that the SIP function has been taken out by the local telco to prevent the use of SIP services, and guess that a debranding might restore the feature.

Please correct me if I am wrong!

Anyway, if I am right, then my next question is, are the product codes given by zorcgeo (sp?) for 6120 applicable to my model? Will having a wrong product code brick the phone?

If so, then where can I find a product code before I debrand my firmware?

Thanks for helping, and this forum is so useful!