Vodafone USSD Codes: Balance Check → *141# V2V Nite Minutes → *147# Check SIM Card Number → *111*2# Free SMS Balance → *142# Calling Balance → *145# Free Local Minutes → *148# Active Data Plans → *111*6*1# Usage Allowance → *111*6*2# Best Offers → *111*8# Offers → *121# Low Balance Services → *111*9# Bonus Cards → *111*7*# Vodafone Delights → *111*1# Last Three Calls → *111*3*1# Last Three SMS → *111*3*2# Last 3 Charges → *111*4# Last 3 Recharges → *111*5# -------------------------- 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<Recharge Pin># 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# _______________________ Airtel USSD Codes: Balance Check → *123# Check Your Number → *140*1600# or *282# Daily and Monthly SMS pack → *555# or *777# Special Five Offers → *222# Airtel Gift Service → *141# Facebook Fontwise Service → *325# My airtel My Offers → *121# Check GPRS Data → *123*7# or *123*10# Daily SMS Count → *125*5# Mobile Office Activation or Deactivation → *567# Direct Call Customer Care → 198p2p1p4p2 DND service call → 1909 Twitter service → *515# 3G data balance → *123*11# _______________________ Idea USSD Codes: Balance Check → *212# or *130# or *123# Idea Service Menu → *147# Check Your Number → *789# or *100# or *1# Account balance → *456# or *457# Check GPRS Balance → *125# or *131*3# SMS Balance → *451# Balance Transfer *567*Mobile Number*Rs.# Idea Service → *147# Idea Pack → *369# Idea Price → *567# Customer Care → 12345 Idea Menu → *111# Active 3G → ACT 3G to 12345 Deactive 3G → DEACT 3G to 12345 GPRS Setting → SET to 12345 _______________________ BSNL USSD Codes: Balance Check → *123# GPRS/3G Data, Local SMS, Onnet Voice, GPRS Data Night, All Active STVs by SMS → *112# SMS Local → *123*1# National SMS → *123*2# Network Call → *123*5# Local Network Call → *123*6# Night GPRS Pack → *123*8# Video Call Balance → *123*9# _______________________ Reliance USSD Codes: Balance Check → *367# or *306# or *402# Check Internet Data → *333*1*3*1# or *367*3# Check Your Number → *1# Recharge → *368# or *305*<1 digit pin># Special Packs → *777# Caller Tunes → *999# Packs → *123# or *321# Free Net → *123*099# _______________________ Aircel USSD Codes: Check Your Own Number → *1# or *234*4# Balance Check → *125# or *127# GPRS Data → *126*1# or *126*4# Available minutes and SMS → *123# _______________________ Uninor USSD Codes: Balance Check → *222*2# Check SIM Card Number → *222*4#