6630 strange

[tolowo]

Hi guys,I have one nokia 6630 that fell down and stop working,after servicing and reflowing the phone comes up now.But when you insert a sim card,it shows you "sim card not valid".They were using the phone before this happened,and since BB5 phone doesn't have unlocking solution for now, is their any remedy for these. Please your suggestion or advice count a lot on these.
Thanks