Why does your transparent phone case turn yellow and how to clean?

More than 70% consumer will face a problem is that the phone case will turn yellow after they purchased a clear phone case from the store and use it for a while.

Especially the soft bumper case and the cases were made of silicone and plastic, they are easier to turn yellow, which affects not only beautiful, but also the user’s experience

Why the phone case became like this?

Actually, there are a lot of reasons that why the phone case will turn yellow. The main reason is because of the ultraviolet radiation of the sun. If you usually use your smart phone with the case in outdoor, the case will turn yellow after a long time exposes under the sun.

Yellowing of polymer materials is mainly due to a variety of degradation reactions (thermal, photo oxidation, radiation, oxidation). These reactions are chemical in nature, so they are irreversible, the reaction cannot be switched back from product(s) to reactants

How to clean? We search some cleaning methods online and test. Let’s see the result:

1. Soap water or laundry detergent
The most frequently used method is soaking the phone case with soapy water or laundry detergent water for a while. Then use a soft brush or a toothbrush to lightly brush the case until wipe the yellow stains off. Generally speaking, the normal substance on the phone case can be cleaned easily. But if it is yellow due to oxidation or similar reasons, it can not be cleaned.

2. Bleach water

Bleach is a kind of water that can make things white or fade in the color, which has an obvious effect on cleaning silicone phone case. Before using the bleach water, you suppose to prepare some gadgets, a pair of plastic gloves, an apron and a disposable face mask.

The reason why you need those stuffs is because of the bleach is corrosive and irritating, you need some things protective. According to the instructions of the product packaging, use it after diluting the bleach on the basis of the prescribed proportion.

Most of the bleach water in the market has featured with sterilization. Put the phone case in a ventilated place and make it dry after soaking in the bleach and wiping it clear. But the same problem is we can not clear away the yellow stain if it was caused by the oxidation.

3. Toothpaste

As we know, toothpaste can make our tooth clean and white, so it may help to clean our phone case.. However, Does it reach our expectations for cleaning yellowing phone case? The answer is No.

Let’s coat some toothpaste on the surface of the silicone phone case and brush repeatedly with toothbrush. We are pity to tell you that we found out it is not effective to use the toothpaste to clean the silicone phone case. The yellow stain is still there

Obviously, the toothpaste can easily clean the tea stains or coffee stains of the tea cup, and even remove the small scratches on the surface of the mobile phone, but from the actual test, the same problem is we can not clear away the yellow stain if it was caused by the oxidation..

4. Eraser
As it in known to all that an eraser can remove some dirty mark. It does not only wipe the handwriting on paper objects, but also has a good cleaning effect on other objects. It is also suitable for use on phone case, especially those models that use a matte finish.
If you use an eraser, you can clean out the dirt. So, does it have a good effect on a smooth silicone phone case? After we wiped the soft phone case with the eraser, it clear the dirt, but still can not get the yellow stains off the case.

5. Alcohol
Alcohol has excellent cleaning ability. Because alcohol has the characteristics of strong decontamination and volatilization, it can be returned to a dry state in a short time after wiping. It does not easily penetrate into the machine like water, which may cause a short circuit in the power supply.
Let your yellowing phone case soaking in the water 10min then wipe the stains repeatedly. It works, but only a little bit of effect on cleaning the stains. If you are interested in this method, you can buy a bottle of 75% medical alcohol to try.

Do you have any other methods to make the clear phone case clean? write down your suggestion… 

Grandshine-Leading manufacturer of Industry/rugged tablet accessories and Smartphone accessories