When working with the HTC 10, we noticed something peculiar. The time that it took to transfer sample photos from HTC 10 to our PC definitely felt much slower than transferring photos from the LG G5 or the Samsung Galaxy S7 edge. We thought it'd be interesting to measure how these phones perform in reading and writing speeds on the internal memory. The HTC 10 uses the more conventional Embedded Multi-Media Controller (eMMC) 5.1 NAND memory, which, when compared to Samsung's Universal Flash Storage (UFS) 2.1 NAND, is significantly lower in read/write performance than the newer UFS 2.1...
Source: http://www.gsmarena.com/htc_10_storage_read_write_speeds_below_average_with_other_flagships-news-18091.php
