This is an old question but I've tried all the old answers but without any joy.
I have a Sony Z5 and Nexus 9 tablet, both on Android 7.1.1. The Z5 does what I expect when I plug a USB cable into it and allows me to choose whether to charge it or transfer files. The Nexus 9 does nothing. I've tried different cables.
I've enabled Developer options with the 7 taps on the Build but there is no USB Debugging option in the Developer option window. It isn't greyed out, it simply isn't there.
Has anyone any ideas how to wake my tablet up and take notice of me when I plug a USB cable into it?
I've been able to transfer files from the tablet using wireless and the File Commander app but I need it to recognise a USB cable so I can lift files off SD cards.
I have a Sony Z5 and Nexus 9 tablet, both on Android 7.1.1. The Z5 does what I expect when I plug a USB cable into it and allows me to choose whether to charge it or transfer files. The Nexus 9 does nothing. I've tried different cables.
I've enabled Developer options with the 7 taps on the Build but there is no USB Debugging option in the Developer option window. It isn't greyed out, it simply isn't there.
Has anyone any ideas how to wake my tablet up and take notice of me when I plug a USB cable into it?
I've been able to transfer files from the tablet using wireless and the File Commander app but I need it to recognise a USB cable so I can lift files off SD cards.
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