Since the release of the Galaxy S4, people have frowned to Samsung for taking an excessive amount of storage from the somewhat limited 16GB internal memory. To be precise, users get only 9GB available space of those 16GB, while 6,85GB are system-reserved. Fortunately, Samsung reacted to all those complains and questions to clear things out:
“For the Galaxy S4 16 GB model, approximately 6.85 GB occupies the system part of internal memory, which is 1 GB bigger than that of the Galaxy S3, in order to provide a high resolution display and more powerful features to our consumers. To offer the ultimate mobile experience to our users, Samsung provides a microSD slot on Galaxy S4 for extension of memory.”
So, like it or not, that’s what Samsung said about the problem. In other words, it suggests you get a microSD card for all your memory needs.