I went to a cellular trade show (actually many!) and the carriers announced WITH GLEE! that the average user is now changing handsets (that's what the phone is called) under 2 years now.
This means GOOD NEWS for them in many ways. It means that the phones do not have to be built to last 7 or 10 years so if you are thinking durability the news is grim.
Unless we get into the militarized units, I would never use the word "durability".
Im about to buy a new phone and Im having doubts about the quality of these two examples. Is s3 better than iPhone 5? Im tired of investing in cheaper products that have lower durability.