Sorry to say, but I think you have this wrong.
Remember - Apple announced the iPhone January 2007 - Shipped June 2007.
Android Announced Nov 2008 - Shipped May 2009.
OK - So let me get this straight - Apple releases their product 1.5 years ahead of Google's Android, but you are stating that Samsung actually was working long before Apple on their phone design documents - (See your quote above)
SO - based on this logic, Apple stole Samsung's secret, yet to be released phone idea, which was based on an operating system that was not invented yet (Android), then created their iPhone, and released it 1.5 years before Samsung did? Does that actually make sense to you? In fact, Samsung's first Android phone was the i7500, which was released April 27, 2009 - 2 years AFTER Apple released the iPhone.
Have you looked at the i7500? It looks like *****- nothing like the current Galaxy models, and from the looks of it realized that they needed a different strategy. Android did not look like Apple back then (Which would mean that if they did, then Apple "Might" have copied them) - but they CHANGED their design to look more like Apple. It wasn't until Gingerbread (Dec 2010) that Android caught up to most of the Apple features, and the UI started looking like Apple.
My 2 cents.