Samsung USB not showing in Ubuntu 18.04

Ubuntu 18.04 doesn't recognize any of my Android devices.

When I type lsusb it not showing any mobile devices.

What can I do to fix this?

I tried to install mtp , terminal says libmtp is the newest version and finally this answer worked for me.

$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0BB4A1B2FA1A38EB
$ sudo add-apt-repository "deb http://ppa.launchpad.net/samoilov-lex/aftl-stable/ubuntu artful main"
$ sudo apt-get install android-file-transfer

I went to Developer options on my phone and then I only press Revoke USB debugging aut... and It works for me.

I had a similar issue, and after I cleaned the USB-C port and the USB port on my laptop, it managed to solve it. Try it. Yes I know, that's a frustratingly simple answer, but it could still be the answer. I was floored when I figured it out myself.

Yo lo he resuelto simplemente con otro cable usb. El cable tiene serigrafiado la siguiente información: usb 2.0 cable awm 2725 vw-1 80ºC 30V Yo tengo xubuntu 20.04 lts y galaxy tab10 2016

I have solved it simply with another usb cable. The cable has the following information printed on it: usb 2.0 cable awm 2725 vw-1 80ºC 30V I have xubuntu 20.04 lts and galaxy tab10 2016