I was receiving many requests from the users that my tricks not working for them but working in friends sim else working with another airtel sim , well this is because airtel blocks sim when we continuously uses the free gprs 3g means 50mb limit will be there to avoid this we have to disconnect befor it reaching 50mb and connect again, sim blocking means you wont get any free net in your sim thats it , well dont panic here i will provide solution for this sim unblocking well you may also found to read the airtel free recharge trick here 
well quickly get into the steps:

airtel sim unblock to get free gprs,airtel unblocking solution to get free 3g


METHOD 1 : Ever Green Solution
  • Just remove your sim from your mobile
  • Insert your sim in basic mobile frankly speaks black and white mobiles else mobile with no gprs facility 
  • Now send sms as MO to 54321
  • Wait for half an hour (30min)
  • Now again reinsert your Sim in your mobile again Now your will receive settings voila your sim is unblocked to confirm just check the free ips in your default browser you can find free ips from here 
METHOD 2: Spoofing with SMS
  •  Just send sms as FACEBOOK to 54321
  • Again send sms as FB to 54321
  • Again send sms as FACE to 54321
  • Again send sms as FACE BOOK to 54321
  • Wait for 1 hour your sim will unblocked (if not worked send sms FB to 54321 for atleast 8 time)
 METHOD 3: Ever some and simple basic trick
  • Simply deactivate all gprs / 3G services from your mobile dail 121 or 198 follow the instructions 
  • wait for 2Days , after 2 days check whether airtelgprs.com is working or not if not working then
  • dail *567*11# and send sms 3G to 121 and your sim is now unblocked
METHOD 4: Commonsense trick
  • just send PORT to 1900 when the customer care people call back you just tell you took sim as you getting FACEBOOK free in AIRTEL now you not getting , they will unblock your sim telling that we will check the problem dont port thats it now your sim will get unblocked very quickly
Once your sim get unblocked dont forget to see my tricks Airtel anroid mobile trick , airtel ucweb tricks 2013 here
feel free to contact us with your query..