Which one of the following is an 'end-to-end secure mobile ecosystem' developed recently by the Indian Army?

SAMBHAV (Secure Army Mobile Bharat Version) is an end-to-end secure mobile ecosystem developed by the Indian Army for secure communication. It is built on 5G technology with hardened security features and provides a fully indigenous platform for voice and data communication among Army officers. The system uses encryption at multiple layers and runs on indigenously developed hardware and software, eliminating dependence on foreign platforms for sensitive military communication.