I have heard of this theory, mostly about cars that are programmed to not last and break down. I can definitely see this being a reality and all the auto supply companies in on it too.
So for our phones to be made to not last makes sense because they are constantly coming out with new phones and features to try and get you to buy them. It's crazy when you think about how much money phones are and how often they want you to upgrade.
RE: The theory that says your smartphone is made to last a short time and force you to buy more