Friends here are some must known user codes for all airtel users

These user code willswitch you from beginner to an advance level user.....!!
before using any code you all are advised to confirm...!!
codes can be changed any time by airtel...!!
you can Also use Airtel's "airtel my account service"
instead some of these codes...!
1. Send STOP to 121/1210 to stop any service
2. Dial *555# for daily and monthly sms packs
3. Send MRP FULLTT to 51619 for available full talktime offers
4. Send MRP TRF to 51619 for available tariff offers
5. Send MRP SMS to 51619 for available sms packs
6. Send MRP GPRS to 51619 for available gprs pack
7. Send 3G to 121 for activating 3g or change 3g data plan
8. Send START to 121/1210 to startany service
9. Dial *222# for sepcial five offers…
10.
11. Dial *141# for airtel gift service…
12.
13. Dial *123*7# or *123*10# TO CHECK gprs data balance (available MB)
14.
15. Dial *125*5# for daily sms count
16. Dial *325# for facebook fontwish service
17. Dial *121# for my airtel my offers
18. Send FUN to 54321 to activate airtel live (not working
19. on new sims now)
20. Send LIVE to 52567 for airtellive settings
21. Dial *123# for balance n validity
22. Dial *567# for mobile office activation n deactivation
And here is A huge list for airtel short codes to get your work done without customer care support...:)
Categories Direct Dialing Code
*121*1#
bill & package info for postpaid
get your current usages info
*121*112#
make your payments/bill
*121*1*1*3#
know the minimumpayable amount ifbarred
*121*116#
to track gprs /internet usages for postpaid
*121*1*1*7#
to know your package and tariff
*121*1*1*1#
to know about postpaid facilities
*121*1*1*8#
*121*2#
start a service & alert
(Prepaid and Postpaid)
to start caller tunes
*121*2*1#
to start mobile backup
*121*2*3#
to start call block service
*121*2*4#
to start missed call alert
*121*2*5#
to start classified services
*121*2*6#
to start cricket and sports alert
*121*2*7#
to start namaz alert
*121*2*13#
*121*3#
stop a service & alerts
(Prepaid and Postpaid)
to stop caller tunes
*121*3*1#
to stop mobile backup
*121*3*3#
to stop missed call alert
*121*3*5#
to stop breaking news alerts
*121*3*6#
to stop namaz alert
*121*3*11#
*121*6#
list of song codes for caller tune
(Prepaid and Postpaid)
song of the month
*121*6*4*1#
for bangla song code
*121*6*4*2#
for hindi song code
*121*6*4*3#
for english song code
*121*6*4*4#
*121*4#
friends n family
(Prepaid and Postpaid)
to add number as fnf
*121*41#
to delete a number from fnf
*121*42#
to get the list of your fnf numbers
*121*44#
*121*8#
prepaid package change
to change your package to adda
*121*81#
to change your package to golpo
*121*82#
to change your package to kotha
*121*83#
to change your package to dolbol
*121*84#
others
call me back
*121*5#
get internet settings for your handset
*121*6*1#
to know your number
*121*6*3#
to know prepaid package and tariff
*121*6*5#
to know different internet package
*121*7#
to track gprs /internet usages for prepaid
*778*4#
NOTE:: SOME CODE MEY COST YOU IF AIRTEL CHANGE SOMETHING BE CAREFULL AND UPDATED....!!