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htc one a9 otg

Hi! I've got a htc one A9. I used the otg many times in day, with flash memory or a memory card in a reader and then put in otg. After so many times that I use; someday it didn't works for memory card! In flash memory it's ok just like past but memory card didn't works. I do anything to fix this like: reset factory, formating the card in computer and phone, changeing the otg and memory card reader, trying diffrent memory; but nothing changes! Flash doing great and memory not working!

Please tell me how to fix this.


Hi Ali. Was there any update installed on the phone before the USB OTG feature stopped working? Also try to format the OTG device to fat32.

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