Testing must be done in order of the following screen reader/browser combinations.
JAWS with IE on Windows
NVDA with Firefox on Windows
VoiceOver with Safari on Mac OS
Use the native screen reader and the following browsers.
Android: TalkBack with Chrome
iOS: VoiceOver with Safari
Screen readers typically allow users to customize what details their screen reader will announce. Unless otherwise specified, all screen reader testing methods assume default verbosity settings.
For VoiceOver, just Fix Safari Tabbing