Comprehensive mobile app release testing protocol with 19 verification phases and priority classification (P0 release blockers through P3 nice-to-have). Covers API health, auth flows, critical/emergency paths, navigation stability, permissions, watch apps, email templates, offline resilience, data integrity, security, build consistency, performance, accessibility, device compatibility, disaster recovery, compliance, end-to-end user journeys, and post-deploy verification. Built by Nucleus360 for App Store and Play Store submissions.