I think UFS might catch on if Samsung started cooperating with Samsung and Samsung to build a Samsung phone that would take Samsung UFS cards. Alas, I fear this

I think UFS might catch on if Samsung started cooperating with Samsung and Samsung to build a Samsung phone that would take Samsung UFS cards. Alas, I fear this can never happen, as Samsung wouldn't want Samsung's products to compete with their own storage tiers. The problem with microSD vs UFS is that microSD is actually more than fast enough for most use cases if you buy good cards. Random I/O on SD cards is rarely a requirement even of phones with SD cards in them. Most of the time it's just bulk writing or reading video files and downloads.