cheapest nokia dct4 unblocking solution?

[petrosg]

Well,
my friend has a nokia and he recently told me it was blocked and it is not stolen. :S
He called the network and needs proof of purchase which he, sadly, lost.
What would be the cheapest way to unblock his phone?

[ninjana]

tell your friend to go to the shop and ask for one copy of the comprovative of buy

[petrosg]

comprovative of buy?

[ninjana]

sory for my bad english
tell your for to go to the store where he getted the phone and ask for a coppy of the comprovatif of purchase

[petrosg]

Ah ok, thanks for your help.