I hate mobile phones. they work on the assumption that you have nimble fingers and can feel your fingertips. I have mild dyspraxia, which means I am clumsy and am forever hitting the wrong keys and buttons and because, following an operation to remedy carpal tunnel syndrome, I cannot feel the tips of my fingers so I am constantly pressing the screen to softly or too hard so that nothing responds as it should.
I also hate getting phone calls when I am out and about and unless I can see it is urgent I do not bother to answer it.
I like my landline that I can answer in the quiet, concentrate on the conversation, whether personal or in arranging an appointment or delivery.
Yes, I can see all the advantages of having a mobile phone and I do always carry mine with me for emergency use - for sat nav and, occasionally for looking things up on google.
But i am much more comfortable with a computer with a decent size screen and a phone with proper buttons that are a decent size that I can be sure I am pressing the right one in the right way.
Mobile phones are only for those who are nimble fingered and dexterous. As far as phone manufacturers are concerned, they do not give a toss for anyone with any kind of manual disability.