Why clear phone cases turn yellow
It is chemistry, not quality. Anyone claiming otherwise is selling something.
Journal
Materials: what a case is made of
Every case material is a trade. Hard plastics hold their shape and show every scratch; soft ones absorb a drop and pick up lint; leather ages well and does not forgive water. These pieces set out what each material is good at, what it costs you, and how it looks after a year rather than on the first day.
How to clean a matte case without ruining it
The failure mode is not dirt. It is the thing someone used to remove the dirt.
