Achieve Reliable Native E2E Tests Beyond Fixing Flakes

Reactive approaches to fixing flaky native E2E tests rarely improve long-term stability. Based on real experience leading mobile E2E infrastructure, the key to reliable test suites lies in four areas: stabilizing test environments (isolated environments, clean test data per session, mocking non-deterministic API responses), establishing clear test ownership per feature team, reducing alert noise by muting known flaky tests and enriching failure notifications, and scaling cost-effectively using Dockerized Android emulators (e.g., docker-android) for PR builds while reserving real device farms for periodic runs. Analyzing historical failure patterns to categorize root causes is recommended as the first concrete step.