Now the question is, why did Samsung did that for the Galaxy S7 and S7 Edge, but now for the Galaxy S6? Could it be the backlash they received from customers that they decided to give in? While that might be a possibility (and a strong one at that), Samsung has since offered an explanation as to why that might.
According to Kyle Brown, head of technology, content and launch management at Samsung, the reason was because they felt that the Galaxy S6’s tech was performing well really, and they were worried that a microSD card would slow things down. “At the time we launched the S6, we upgraded all the performance within the device. We upgraded to UFS 2.0, we upgraded to DDR4 RAM… we believed that having a memory card slot would slow down the performance of the device.”
However with the Galaxy S7, Samsung has managed to strike the right balance which is why the microSD card slot was brought back. “Thankfully on the S7 we’ve managed to get the best of both worlds.”