Detailed coverage
Get Quality Signals fast
Ad-hoc Tests to cover edge cases
Understand changes and impact areas
Catch Regression bugs
Identify areas for automation
Test all popular device/browsers
Cover by year class
Cover different Form factors
Catch Untranslated strings
Screenshots that assist Translators
Test Support for Visually impaired
Network speeds / Actual carriers
Actual deployments / Migrations
Battery / Bluetooth / Wifi
Automate for Web/Mobile
Maintain tests and monitor results
Standard or Proprietary Frameworks