For the older generation which many of us qualify I would recommend the Iphone.
It has one feature I think is very valuable for the older crowd that allows their children to keep track of them.
That feature is find my phone.
Recently I had a good friend that was involved in a serious traffic accident in a remote section of Nevada.
With the find my phone application his son was able to determine were his father was right down to which building he was in which proved to be a hospital in a small town in Nevada.