Share your experience!
My phone does not detect a USB stick.
I have tried the same OTG cable and USB stick on a LG g2 and it is working fine.
My phone has never been in contact with water and i also used the usb detection shortcut with no lack.
I even did a clean install with Xperia Companion on firmware 32.2.A.0.253
I see the same issue here /t5/Xperia-Z5-Z5-Compact-Z5-Premium/xperia-z5-premium-OTG-problem/m-p/1120824/highlight/true#
and that not all Card reader can be read anymore
/t5/Xperia-Z5-Z5-Compact-Z5-Premium/Problem-usb-otg/m-p/1073396/highlight/true#M5380
As i said, it does not work the detection from shortcut of from within settings
It works with Z5 Compact but note that Z5 will not detect a USB device automatically when you plug it in. You need to go to Settings -> Device connection -> USB Connectivity -> Detect USB device.
It will also detect USB devices during boot so in case the touch is not working you can plug a mouse in, turn the phone off and then on again.
There is a problem surely with some combination of OTG and / or USB Stick in my opinion.
Reboot with the OTG+Stick attached is not working also.
I hope the Nougat update will fix such issues too.
Reboot the phone with an USB keyboard plugged. That worked with me. (Z5)