My Samsung Galaxy S II had a problem with its display: there was a yellowish tinted circular spot, roughly the size of a 5-cent coin, near the lower left edge of the screen. The spot had probably been there since the beginning, but I only started noticing it about 2 weeks after I bought it. I heard about the issue from forum postings. The yellowish tint is obvious against lighter shades of a plain background, so it is not something…