https://community.sony.hu/t5/c-series/usd-restricted/m-p/3548265#M6207 My phone can't read any USB device when inserted to my Sony C5 ultra. This function performs well before but now i can no longer open my USB Sun, 26 Mar 2017 00:45:33 GMT PRD012 2017-03-26T00:45:33Z https://community.sony.hu/t5/c-series/usd-restricted/m-p/3548265#M6207 My phone can't read any USB device when inserted to my Sony C5 ultra. This function performs well before but now i can no longer open my USB Sun, 26 Mar 2017 00:45:33 GMT https://community.sony.hu/t5/c-series/usd-restricted/m-p/3548265#M6207 PRD012 2017-03-26T00:45:33Z https://community.sony.hu/t5/c-series/usd-restricted/m-p/3548266#M6208 Can you try to select MTP mode? Enable developer mode, from there select your USB configuration accordingly with your need. Sun, 26 Mar 2017 01:03:29 GMT https://community.sony.hu/t5/c-series/usd-restricted/m-p/3548266#M6208 YoGem 2017-03-26T01:03:29Z