Via the OTG connection on the smartphone, I was unable to read or write any files at all. It takes a very long time to connect, it is identified slowly, it takes around five minutes to scan the table of contents, and it freezes up and bugs out during file operations. I tried this a few times, and I tried it with two different adapters. I took two identical flash drives, each of which had such a different tale to tell. Via the use of OTG, other flash drives, including those manufactured by KingstSee full review