I don't get why they persist in making 2 different variants, since the Snapdragon chips are the ones supporting LTE they could just deploy these across the board; esp. given that the real-life difference between the 2 variants is negligible. One would think it would be cheaper to deploy one variant instead of two.
Alternatively, they could just create Exynos chips that support all LTE bands and be done with it.
house70: They are most likely doing this to maintain independence and secure a steady supply to meet the demand. If Qualcomm fails to deliver, they have their own chips to fall back on and if their factories break down, ... well then they have Qualcomm.