As an SGS4 user for personal and an iPhone6 user for work I have to say this change is entirely understandable. Samsung have lost this round of the fight because Apple have responded to two of the things that made the Samsungs better than iPhones for a lot of us - screen size and battery life. Now the iPhone 6 plus is just as big as an SGS and the battery life is really very good - combined with Samsungs decision to stop you being able to swap out the battery and SD card, means the iPhone is simply the better device now. I'm seriously considering a change to the dark side come upgrade time.