Not working in many states, for more you can see my other airtel post, i have not tried it personally as sim is unavilable right.
p.s information should be free a thought by aaron swartz
1. At first activate rs 5 cyber cafe pack by dialing *567*100#
2. Now activate rs 9 3G/4G pack unlimited validity by dialing *567# and select 1st option
3. Now suddenly turn on “Air plane” mode in your device and then again turn off it.
4. Now turn on your data connection and enjoy unlimited 3G for 1 hour
Note:- Dont turn off data connection for 1 hour