Signal is the privacy-first messenger for Pakistanis who care about encrypted conversations — journalists, activists and professionals increasingly rely on it for sensitive discussions. Messages, calls and media are end-to-end encrypted by default, and the nonprofit behind it runs no ads and collects almost no metadata. Pros: strongest-in-class default encryption, no ads or data-hungry tracking, independent nonprofit ownership. Cons: fewer people in Pakistan use it, so getting contacts to switch is hard; backup and migration tools are limited. Best for privacy-conscious users who want maximum security.