Apple invented the non-standard "viewport" meta tag and gave guidelines on how to use it [1]. The article that has popularized the term RWD mentions iPhone four

Apple invented the non-standard "viewport" meta tag and gave guidelines on how to use it [1]. The article that has popularized the term RWD mentions iPhone four times [2]. For me it is obvious that RWD started from the iPhone, but maybe our viewpoints (or viewports) differ. [1] https://developer.apple.com/library/archive/documentation/AppleApplications/Reference/SafariWebContent/UsingtheViewport/UsingtheViewport.html#//apple_ref/doc/uid/TP40006509-SW1 https://developer.apple.com/library/archive/documentation/Ap... [2] https://alistapart.com/article/responsive-web-design/ https://alistapart.com/article/responsive-web-design/