Elderly Challenge Observation 4

I have noticed my aging grandmother having difficulty making a phone call. Her eyesight is weakening and she is having long sightedness. When she presses the numbers, she might press more numbers than intended. She does not know how to do "backspace" so she will press the call, put down the phone and dial in the numbers again. I think that she needs a phone that has its buttons more spaced out to save time.