mobil bredband unavailable ubuntu 20.04 after software update

[do2021]

I installed Ubuntu 20.04, I tried the internet, it works, knowing that I use the huawei e173 key,
but after I did the update, the network stopped and I found mobil bredband unavailable,
what is the solution, my friends
Sorry for my language, it's from Google​

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[Brickwizard]

I don't know if this will help [I don't use Mobile internet]

Mobile broadband on Ubuntu MATE 20.04 LTS not working

I got a problem with my Dell E6230 Mobile Broadband connection in Ubuntu MATE 20.04. My laptop has a SIM card slot and also I have a SIM in it which has an internet plan active. Tested in Windows 1...

askubuntu.com

If not post the results of terminal code rfkill list
it may give another member some idea of the problem

 

[Deleted member 108694]

Try

sudo apt install modem-manager-gui