2 cents plus 3 dollars will buy you a cup of coffee. I think that you wanting to build your own tablets and cell phones without even the willingness to learn how to solder, use cad, or code is funny, and perhaps a bit naive.
Half true. To learn how to soldering is not on my plans as It is not in your plan,for example,to study Freud's thought. Simply the time for me is not yet came. I feel not ready to go deeply in that field. Even because I'm realizing that's not strictly necessary. I see that I can build a tablet without solder anything. Sure,it will become rudimentary and toy-like, not a product that can compete on the market. But it should not. I can't start selling small or large quantities of devices on the market. And so I'm fine with making it a spartan one. I also like the idea of being able to attach and detach as many components as possible from each other, in order to make it easier to replace them, without having to ask someone to carry out professional (and expensive) operations ; but it's on my plans learning how to use CAD.
I would like to pay the coffee to you. Or if you prefer a beer. Because even if I perceive you as a bit gruff, I still believe that you are a person that worth keeping as a friend.