On 2019-03-21 22:40, MRT wrote:
> Mobile 3G/4G – galimybė naudotis internetu per mobilųjį USB modemą;

Iš gamintojo instrukcijos:

Mobile fallback
Your TG389ac allows you to use a mobile Internet connection as fallback 
connection for your main Internet connection. This
means that your TG389ac will automatically switch to the mobile Internet 
connection when your main Internet connection is
down.
Your TG389ac will automatically switch back to the main Internet 
connection as soon as it becomes available again.
What do I need?
To set up mobile fallback connection,
you need:
A mobile Internet dongle
Only use the mobile Internet dongles provided by your service provider.