moisture in USB port icon and warning

[joemontana57]

This came up suddenly today. However I've been working inside all morning, my phone has either been in my pocket or resting on the table. Not close to any moisture.

Any idea why this suddenly alerted?

I have an s9+

 

[joemontana57]

It went away.

 

[Mooncatt]

I've seen this question posted several times from Samsung users. If it happens again and doesn't go away, go into your app manager, show system apps, then find the USB app (there may be more to the name, but it's fairly obvious), then clear the data. You may have to also reboot the phone after, but clearing that particular app seems to fix it for most people here.