In fact, the transparent mobile phone case is easy to yellow ~ just like the keyboard film. But there are several points that can delay the yellowing time.

Let the phone case get as little water as possible.

Avoid touching the phone case when you have oil on your hands (neither cooking oil nor oil secreted by your skin is good)

Let the phone case contact with hot water as little as possible, and it is best not to have an overheated environment below 35 degrees Celsius. Overheated weather is bad for plastics.

Generally speaking, the effect of that method is not very obvious, and it can only be delayed by about 10- 15 days at most. Or how to say that the mobile phone case is actually a consumable ~ I hope it will help you ~