plasma-dialer doesn't call
@israel Well, reinstalling Linux in every uncertain situation usually does the trick, but I want to play with it before flashing OS 
So back to my question - I just added that command to Settings->Autostart and modem now starts after phone restart. It takes a minute for it to fully register with cell network though... Unfortunately there is only ADD button, and there is no way to edit or remove what you add... that is lame, but I'm fine, it does what I want, problem solved.
Last question - do you guys hear phone beeps while you waiting for opponent to answer your call? For me phone is just silently waiting till they pick up. I can survive with that of cause, but that is not how phones usually work, so I'm just curious, if it's my personal issue.
So back to my question - I just added that command to Settings->Autostart and modem now starts after phone restart. It takes a minute for it to fully register with cell network though... Unfortunately there is only ADD button, and there is no way to edit or remove what you add... that is lame, but I'm fine, it does what I want, problem solved.
Last question - do you guys hear phone beeps while you waiting for opponent to answer your call? For me phone is just silently waiting till they pick up. I can survive with that of cause, but that is not how phones usually work, so I'm just curious, if it's my personal issue.