Sometimes there are good technical reasons for why one version of a smartphone runs one chipset, and another version of the very same phone is powered by different silicon. A lot of times, that has to do with wireless connectivity, and especially with the rise of LTE over the past few years, that could mean that LTE-supporting hardware had to be put together with alternate chipsets. You might think that was the same case with the Galaxy S 4 and the Exynos 5 Octa, since the LTE version of the phone, model GT-I9505, runs a ...