This post might spark some debate but I had tried various methods and apps to get the OTG to work on the T6S but in the end - no joy.
I had even tried by pushing the required xml file (copied from the other phones) into the /system/etc/permission but it simply will not work. From my understanding, we need both OS and hardware to support OTG for it to work. The T6S seems to lack the required hardware.
Below is the screen capture from the T6S to conclude this post. Again, we cant get everything from such a cheap device. For me, its worth every Ringgit/Dollar/Euro we had paid for it.