There is some discussion as to whether the S7 phones support the extra speeds in UHS-II microSD cards - which would require an extra row of pins in the reader. The preliminary benchmarks of UHS-II cards show disappointing performance below the maximum speed of a UHS-I port, so it is doubtful that the reader is a full UHS-II reader, but it would be nice if the teardown could confirm the pin configuration of the microSD port so we can put the issue to rest...