TATA DOCOMO USSD Codes:

Know Your Number → *1# or *580#

Balance Check → *111#
GPRS or Internet Data Check → *111*1#
Customer Care → 121
DND(Do Not Disturb) Call → 1909 or SMS → START DND to 1909
Recharge *135*2#
Balance Inquiry → *191*2#
Validity → *191*3#
Service Points → *191*4#
Last 3 Recharge History → *191*5#
Status of free usage(Pool Balance) → *191*6#
Start/Stop Services → *191*7#
Service Request → *191*8#
Customer Preference → *191*9*1#
Home Zone Locations → *191*9*2#
Daily SMS Count → *191*9*3#
DATA → *191*9*4#
CALL → *191*9*5#
Prepaid Bill Request → *191*9*6#
Edit & Add Account Details → *191*9*7#
Special Offers → *191*9*8#
3G Internet Packs → *141*1#
Local Flavour → *141*2#
ILD Packs → *141*3#
New Internet Packs → *141*4#
Daily/Weekly Packs → *141*5#
Music Unlimited → *141*6#
Chat Zone → *141*7#
Discount Zone → *141*8#
Talk More → *141*9#