Samsung Semiconductor launches UFS 4.0
(All About Windows Phone)

Most Android smartphones use the UFS (Universal Flash Storage) system for their internal storage - and the current state of the art (last few years) is UFS 3.0 or 3.1. Samsung Semiconductor just introduced UFS 4.0, which uses Samsung`s Gen 7 V-NAND memory and proprietary controller. Read speeds go up to 4.2GB/s and write speeds up to 2.8GB/s, along with a 46% power efficiency improvement compared to UFS 3.x.