Here is SIM unblocking trick 2014.
This is 100 % Working trick. Just follow this simple steps.
Step 1 - Remove your Sim card.
Step 2 - Put it into unable GPRS phone like 1100,1280,1202 etc,
Step 3 - Go to message folder create a Message mo send to 543210
Step 4 - Then after 1 hour remove SIM card
Now you are unable put It Into able GPRS phone and your sim works again.
This trick is working for specially Airtel SIM . But you can apply for another SIM. Sometimes it works for all SIMS.
Don't forget to say Thank you.
Dont be a Silent User
comment If Working.