Sanchar Saathi Manual A Practical Guide to Understanding, Using, Managing, and Securing Mobile Connections and Devices Mobile phones have become essential for communication, banking, digital payments, education, work and access to online services. With this growing dependence, understanding telecom security and responsible mobile usage is increasingly important. **Sanchar Saathi Manual** provides a practical introduction to the Government of India’s Sanchar Saathi platform and its useful facilities for mobile subscribers. This manual explains how users can check mobile connections associated with their identity, review unfamiliar numbers and understand available options for reporting unwanted connections. It introduces **Chakshu** and explains how suspected fraudulent calls and messages can be reported. The book also covers lost and stolen mobile phones, **CEIR**, device blocking and unblocking, IMEI information, and precautions for purchasing second-hand devices. Readers will also learn about SIM security, mobile-device protection, privacy, personal and financial information, common telecom scams, suspicious communications and practical steps to take after suspected fraud. Troubleshooting guidance, frequently asked questions and a mobile-security checklist make the manual useful for everyday users.