I don't think you can assume too much about previous faults carrying over as I expect the designs change radically over a few years.
I've owned a few Motorolas and my first mobile was the one on the left. Someone I worked with gave me the flip phone when I was going to the US and mine didn't handle the frequencies used there. The Benq was my first smart phone running Microsoft OS. Some of these were used by other members of the family.