Airtel All USSD Codes:

Task Name	USSD Code
Main Balance	*778#
Own Number	*121*6*3#
Package	*121*8#
Minute Show	*778*5# *778*8#
SMS Show	*778*2#
MMS Show	*222*13#
Data (MB) Balance	*778*39#
Data (MB) Usage	*778*4#
Request Call	*121*5#
Internet Setting	*140*7#
Miscall Alert (ON)	*121*3*4#