✅ Use accessibilityId as the primary locator — works cross-platform
✅ Avoid XPath — it's slow on mobile; use uiAutomator or predicate string
✅ Never use Thread.sleep() — use WebDriverWait or implicit waits
✅ Set noReset: true for test performance (don't reinstall app each time)
✅ Run on real devices for final validation (emulators miss GPU/sensor issues)
✅ Use Appium Doctor before every new setup: appium-doctor
✅ Use device farms (BrowserStack, Sauce Labs, Firebase TestLab) for CI
✅ Keep Appium server and client versions compatible (check release notes)
✅ Capture screenshots and logs on failure
✅ Use page objects for mobile screens