- To avoid unwanted telemarketing calls & SMSs, SMS 'START <0>' to 1909.
- To allow telemarketing SMSs only from select categories, SMS 'START <preferred category no.> to 1909.
Categories & numbers are as follows:
- Banking/Insurance/Financial Products/Credit Cards
- Real Estate
- Education
- Health
- Consumer Goods/Automobiles
- Communication/Broadcasting/Entertainment/IT
- Tourism & Leisure