I apologise in advance as reading 419 posts in this will take forever so if someone suggested this in this topic I'm sorry.
Here's what I think if ever an EVE phone becomes a thing. I think it should go the route of the HP Elite X3 and not even call it a phone but rather a pocket computer (HELLO EARLY 2000s!)
I've actually studied electronics for a few months now during my spare time so I have an overall basic understanding on how everything works (and yet can't piece all of the parts together to make a design). So some of you might say hogwash but trust me on this idea.
Intel's 7th generation Core series features Thunderbolt 3 protocol via USB Type-C.
To be clear here are the processor information sheets for the Core M3-7Y30 : ARK Intel Core M3-7Y30
The Core i5-7Y54: ARK Core i5-7Y54
The core i7-7Y75: ARK i7-7Y75
Notice that the TDP is configurable for as low as 3.5 - 3.75 Watts and the average TDP is 4.5 Watts.
That's not a lot of heat and power consumption either, it's still a little bit too high for passive cooling with a sheet of copper so for passive cooling there's liquid cooling through a closed loop by having an evaporator on the heat source (The SoC in this case) and have a condenser place near the evaporator in a closed loop so the vapor coming from the evaporator heads to the condenser which turns into liquid that will then reach the evaporator to cool down the SoC, once it reaches the SoC it'll evaporate into vapor and then head back to the condenser, rinse and repeat.
More information here: Fujitsu Closed Loop Liquid Cooling for compact electronics.
So we have a powerful SoC for a portable device. Why have Thunderbolt 3 protocol?
Well, there's the possibility of having a docking station, that will charge the phone, have USB ports and have another USB Type-C Thunderbolt port for say... an external GPU dock (Powercolor Devil Box, Akitio ThunderBolt 3 Node, Razer Core, etc...). People can play some pretty demanding games at a reasonable framerate with it. The liquid cooling solution can keep the CPU from throttling as well.
So with all this, how about installing Windows 10 Home/Pro instead of Mobile and perhaps program an application that would accept and send calls and then tie it to the Phone application on Windows 10?
As for the rest (camera, screen size, case material, etc...) I think the rest of the community can decide on that