Although I agree that Cell Phone s are dangerous and I will not use them. I do not own one and I avoid them as much as possible. I even based a house purchase based upon the location of Cell Phone masts and abandoned a house purchased when I found out that there was a Cell Phone mast practically in the back garden. That is how much I am against them.
I do not use wifi, my router is wired ethernet connected. I do own a cordless home telephone, I cannot avoid that but I did replace an older one with a model which lowers the power based upon it's distance from the base and can shut it down completely.
I have Chronic-Fatigue-Syndrome which is an autoimmune illness, I have never owned a cell phone so the autoimmune aspect of your post I disagree with. This began long before I ever came into contact with any cordless tech and long before cell phones were ever around.
Autoimmune illness is caused by a bacteria BTW.
Wireless technology does adversely affect the immune function and can cause cancer in susceptible individuals. This was highlight many years ago by a scientist who the mobile companies destroyed and pulled strings to prevent him getting any funding for further research.
Cell phones are an evil and are best avoided but they are not the cause of autoimmune illness.