Samsung is a very big company. The telephone division would have to "buy" the panels from their electronics division just like anyone else. It is entirely possible that they couldn't afford their own panels to make whatever their price point is for the final product (opting to go with inferior panels or another make altogether, if need be). Besides, if Apple and Samsung enter a performance based contract, and Samsung can't deliver the specs promised, they don't get paid. This 'Samsung vs Apple' this is really all show boating for the true believers on both sides. In the real world, they are both about making and selling as much product as they can to maximize profits. If Samsung (or Apple) thinks the other has the best product or services to keep their mills churning, you can bet they will. Everything else is windows dressing.