Android phones, apps and tablets

I like Apex Launcher (i use the pro version not sure which features you might want though) very configurable and you could easily set it up with lots of big icons, stop the screen from scrolling off the main page so he doesn't get lost, lock down changes so he cant move icons about or delete them and put 1x1 widgets on for specific things like call/text certain people maybe.

some decent icon sets available for it and the default themes are unobtrusive.

Thanks for the heads up, I'll play about with it, see if I can get something working that he might like...

I had him playing with an N4 the other day. It was... amusing :)