Samsung has been championing Universal Flash Storage (UFS) storage for a couple of years now. Back in February of 2015, it started mass producing embeddable UFS chips at up to 128GB capacity to replace the typical eMMC cards that smartphones had been using previously and provide super fast read, write, and random read and write speeds. The goal, at the time, was to convince users to dump external MicroSD cards and see the benefit of fast embedded storage, which was even later raised to 256GB. That strategy, which was carried out in the Galaxy S6 (and corresponding line-up), didn't pan out all that well with the company's avid power users who loved the flexibility of removable storage, and Samsung resolved to adding back the MicroSD slot the next year in the Galaxy S7.

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