i have recently changed from O2 to three and taken my number with me.
I have requested, and received an unlock code for my S2, which I plan to sell, however, the instructions say:
"Insert another network active sim in the handset.
This should ask for a code.
Input 8 digit unlock code when requested."
But when I try another active sim, (I have tried both Three and Orange), it does not ask for a code, can anyone help?