We’ve all had to struggle with using a phone with a cracked screen at some point or another. It might be because the cost to upgrade is to high, general klutziness, or the “upgrade effect”.
According to science, right before a new iPhone arrives people get very casual with their current phone. The data shows the occurrence of lost iPhones is highest right before a new model is announced. IPhones are just a common example of the “upgrade effect” people have against old stuff vs new stuff. It applies to everything from tools to body wash.
Read more about the “upgrade effect” here.