Thinness and battery don't matter if the phone isn't usable and/or isn't "mine." The first questions for every new phone are, "is it rootable?" and "does it have a headphone jack?" If the answer to either is "no," then we don't have a good phone. Apple and Samsung and Google can blame poor sales on "saturation" or whatever they can think of to cover up that people don't want their crippled phones, but it's no coincidence that as they strip the headphone jacks and ability to customize the sales plummet.