Very low OTG transferring speed - is my unit faulty?

michal.padomichal.pado Level 1
edited August 6 in ZenFone 8

Can someone with an OTG hard-drive check what speed they get when transferring files?

When I transfer files from my portable hard-drive via USB to my old budget Xiaomi Mi 9T, I get stable 30-32 MBps speed:

But when I copy the same file to my Zenfone 8, the speed is fluctuating between 2 MBps and 15 MBps:

The speed is fine when copying files directly from my laptop.


  • jfgt7j8qgxjfgt7j8qgx Level 2

    Because it runs on usb 2.0.

    Not your faulty, all Zenfone are the same

  • me.0mby8me.0mby8 Level 1

    Xiaomi Mi 9T also has usb 2.0 as per gsmarena.

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