Testing and QA are critical for mobile teams, with 88% of users abandoning apps due to bugs and glitches. Maximizing test coverage is crucial, but it's not always possible to achieve 100%. Planning ahead, setting realistic goals, and prioritizing critical components can help increase test coverage. Focusing on code coverage and device/OS coverage can also improve test coverage. Test automation can be an effective tool for increasing test coverage while saving time, but manual testing is still essential for ensuring app quality. By following these strategies and utilizing tools like Instabug, mobile teams can maintain industry-leading apps with stability and performance monitoring.