JOLLY- Professional phone case factory since 2010 

why do phone cases yellow

by:Jolly     2023-05-12

When it comes to protecting our phone from scratches, dents, and damage, phone cases have become a must-have accessory for most people. Phone cases are available in different designs, colors, and materials. However, one issue people often face with phone cases is the yellowing of the case over time. It can be frustrating to see your once-clear phone case turn yellow and become unsightly. In this article, we will explore the reasons why phone cases yellow and how you can prevent it.

What causes phone cases to yellow?

1. Sunlight exposure

One of the primary reasons phone cases turn yellow is exposure to sunlight. The UV rays in sunlight can break down the polymers in the plastic material of the case, causing it to change color. This is true for both clear and colored phone cases. The longer the exposure to sunlight, the faster the yellowing process will occur.

2. Heat exposure

Heat exposure can also cause phone cases to yellow. Exposure to heat above 60C can lead to chemical reactions in the plastic material of the case, causing it to degrade and turn yellow. This can happen if the phone is left in the car on a hot summer day or placed near a heat source.

3. Age and wear

Like anything else, phone cases can also yellow with age and wear. Over time, the plastic material of the case will come into contact with different surfaces, liquids, and substances that can cause it to change color. The wear and tear of daily use can also contribute to yellowing.

How to prevent phone cases from yellowing?

1. Avoid exposure to sunlight and heat

To prevent your phone case from turning yellow, it's crucial to avoid exposing it to sunlight and heat. Avoid leaving your phone in direct sunlight or a hot car, and keep it away from sources of heat such as ovens or radiators. You can also choose to use a phone case made from materials that are resistant to UV rays and heat.

2. Clean your phone case wholesale regularly

Regular cleaning of your phone case can prevent it from turning yellow. Avoid using harsh chemicals or abrasive cleaners, as they can damage the plastic material of the case. Instead, use a soft cloth and gentle cleaning solution to wipe your phone case down regularly.

3. Replace your phone case

If you've had your phone case for a while and it's showing signs of yellowing, it may be time to replace it. A new case made from high-quality materials can offer better protection and can withstand wear and tear better than an older, degraded case.

4. Store your phone case properly

How you store your phone case can also affect its lifespan. When not in use, it's essential to store your phone case in a cool, dry place away from sunlight and heat. This can help prevent the plastic material from degrading and yellowing.

5. Invest in a high-quality phone case

When looking for a phone case wholesale, it's essential to invest in a high-quality case made from materials that are resistant to UV rays, heat, and chemicals. This can ensure that your phone case stays clear and free from yellowing for an extended period.


In conclusion, phone cases turn yellow due to exposure to sunlight, heat, and age. However, by adopting the tips mentioned in this article, you can prevent your phone case from yellowing and ensure that it continues to provide your phone with adequate protection. Remember to clean your phone case regularly, avoid exposure to sunlight and heat, replace your phone case when needed, store it properly, and invest in a high-quality phone case wholesale. By taking these steps, you can keep your phone case looking new and prolong its lifespan.

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