One step at a time 

Could the Internet come from 5g/4g?

What are likely returns per day if its running say 4 hours a day?

I'm self employed but rent an office that I get access to at a cost per use, and it comes with bills all included for that short time I use it, so want to make the most of my time renting that space.

I'm new to this so feel free to shoot me down.

To be brief, I work in places where I have unlimited access to free energy for between 4 to 7 hours a day.

I'm left entirely alone and had the thought that I could plug in portable miners to mine away while I'm at these locations.

But I wasn't sure how portable mining can really be before it's not profitable, and if there really is such as thing as portable mining?

In an ideal world, I would carry a desktop sized unit to these places, plug it in to the power. It'd have 4g access to the Internet, and ideally not require a screen nor a mouse. I turn it on and off it goes and mines.

Does such a thing exist? Am I dreaming here? If it does exist, is there something easy to mine? Interested to hear your ideas and suggestions.

I'd start with 1 machine to see how this goes, but would easily be able to do 5-10 machines (depending on size) each session.

Thanks.