भारतीय दूरसंचार विनियामक प्राधिकरण Telecom Regulatory Authority of India 
A.
No service provider shall activate or deactivate the data service on the Cellular Mobile Telephone connection of a consumer without explicit consent.
Subscribers can send SMS by typing ‘START’ or ‘STOP’ to 1925 to activate or deactivate a service. 1925 is a toll free number and subscribers can even make calls to 1925 for activation/deactivation of data services.
Operators need to send data usage information through SMS or USSD after every Session: Data used, Charges deducted, Balance.
Service providers will also send alert to the subscribers via SMS./E-mail each time when data usage reaches 50%, 90%, 100% of data limit of his plan.
