HELP ME!!! 5210 sim not valid
 

I have unlocked a 5210 which was on the Orange network, UK, but when I put the sim in, Voda sim, it says "sim not valid". Does anybody no why this is and how i can solve this problem?

Cheers

Unlocke the Phone buy DDP
and Changed the Sim Card

What is DDP and I don't want to change the sim. That's the point.

Check if the phone is working fine with the Orange sim card and showing this message only with anyother definitely phones is not unlocked.
Some time if try to unlock with the code it says "sim Restriction off' but still do not work.
Unlock it with Twister and factory reset will be working fine.

elo mate!!!
 

try to unlock it by this software choose the best for u or download both!!!
gud luck mate!!