When focusing on functional testing for mobile apps, why is it essential to test on both newer and older versions of mobile operating systems?

  • Newer versions have enhanced security protocols
  • Older versions have different UI elements
  • To ensure broad compatibility of the application
  • To increase the app download size
Testing on both newer and older versions of mobile operating systems is crucial to ensure the broad compatibility of the application. Users may be on a range of OS versions, and ensuring functionality across this spectrum is vital for user satisfaction and retention. Older versions might have legacy features or compatibility issues, while newer ones might introduce new functionalities or security measures that the app must be compatible with.
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