How to connect USB drive

[matrixstar]

I have an adapter through which I can connect my USB stick to USB C. When I plugin into my S10+ I get absolutely nothing - it doesn't recognise.

I've got a old LG phone, it works fine there. When I connect I get a popup asking what I want to do - I then choose storage, then I can access the USB drive and copy files both ways. 

I saw an old post in 2020 on Samsung forums where someone had the same problem. But they got a pop up notifying of connection and asking what they wanted to do. For them, to connect as a storage device was greyed out. I don't get anything, it's like the USB device isn't even detected. 

I saw a video on YouTube, where someone suggest getting into developer mode to access what looks like the option I want. Surely (if it does work) one shouldn't have to 'hack' the phone to get access? 🤷‍♂️ 

Or am I missing something? 

Thanks. 

[DatBoiG265]

Check if the connection is loose with or without the case on and try using another file explorer like zarchiver to see if it's just my files being buggy

[matrixstar]

Thanks for the reply. 

No loose connection. 

I've tried zarchiver

And Google file Explorer. 

I have a very new adapter that I use in my car. I tried that in addition to the first adapter. 

No luck still. 

I've followed instructions and enabled Developer Option to then get a menu where I can tick the default behaviour when a USB stick is plugged in. I chose both file moving and image moving (I forget the exact naming), the root problem is that the phone doesn't detect the USB drive. 

Now very annoyed 😕 

Any other ideas anyone? 

Surely I can't be the only one suffering? 

[Nathan101]

I am also having the same problem

MY USB adapter was working fine and now all of a sudden the phone connects and disconnects when I insert the thing. Nothing issue working on Resolving the issue. Any ideas people? 

[Niko55]

I have s21.  Have similar problems. USB adapter works on other phones. Not on mine.  It used to 3 days ago.  Usb cable to computer still works.  Tried Samsung help no solution so far. Phone does not recognise external usb for some reason.