Flash is inherently not a reliable storage medium due to its limited lifespan. The current controllers combine advanced technologies in wear leveling, power failure management and error correction to enable us to safely and reliably use current high-density flash.

With the development of technology, mobile phone has become an indispensable mobile device at present, whose configuration has evolved from single-core to eight-core or even ten-core, making its functions more and more powerful. The high-end mobile phone upgraded the standard of storage chips from eMMC to UFS, and began to popularize in thousand-yuan smartphone models.