Hello, I am trying to decide whether or not to get the 128GB version. I often take photos and short videos on my Note PRO 12.2 which does not record 4k videos. I don't store movie file on mobile device. Is it easy to transfer/backup photos and videos from iPhone 6S Plus to Mac or Windows 10 SP4? If it is as simple as plug in the cable and launch an app (iTune?), then what is the point of getting 128GB?