It seems that the company Samsung, which in 2015, abandoned the use of the MicroSD slot in their flagship, you may return it in the next generation of devices, for example, in the Galaxy S7. This tells HDBlog.it.
Slot for memory cards MicroSD as a small part of the smartphone, as it is the very card that is inserted into it. However, this component has long been controversial enough in the mobile industry. Someone from the vendor insists that this is an atavism that can be neglected in order to make today's devices even thinner. Others continue to use it, usually to the delight of the users.