The back button on Android takes you back [1]. How can that confuse you?
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[1] unless the developer has intentionally broken this convention, in which case I suggest you uninstall the app immediately.
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[1] unless the developer has intentionally broken this convention, in which case I suggest you uninstall the app immediately.
Because "back" is ambiguous, and changes meaning often. It's also never explicitly defined.
How can that be ambiguous?