At this year's Mobile World Congress in Barcelona, three Android smartphone unveilings really did stand above the rest: Sony's Xperia Z2, LG's G Pro 2, and Samsung's Galaxy S5.

We know which one is going to sell best, which will have the biggest marketing budget, and which has more plastique - the Galaxy S5's success in spite any of any perceived shortcomings is all but assured. That's just kind of how these things go.

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