What have you tried:
What is the error:i usually use internet via usb tethering ,after upgrading the kernel i noticed that it’s not working anymore, so my "ip a " results showed that the interface “wwan0” is recognized by the kernel but its DOWN and doesn’t have any ip assigned to it , so i manually set it up via “sudo ip link set wwan0 up” and gave it an ip by using “sudo dhcpcd wwan0”.
this got it to work but i have to do it every time i reconnect my phone so it would be nice to knowing how could i fix this issue . if anyone could help i would really appreciate it tnx
What device is this on: pc : asus b450m-a ryzen 5 3400g