My mum finds the iPhone hard to use (she has early stage dementia), she has an Apple Watch for fall detection, I've tried turning off everything but still there's stacks of stuff you can't turn off. I'd love to make a simple interface with "Answer Phone" and a list of people she can call but its not possible, once you see her use it, you realise how insanely complex the UI is. Swiping is also harder for older people because their hands are dryer and less conductive. We need to keep the iPhone though for the fall detection, I'm examining options but there's not much around.