Smartphone: tempered glass to protect the screen

Recognized brands such as Samsung and Apple continue to show ingenuity to offer their customers ever more aesthetic and efficient smartphones. However, these devices are fragile and can be damaged following a shock. 

To protect the screen of your smartphone against the risk of breaks and scratches, tempered glass is an excellent solution. The use of this thin layer of protection offers many advantages, especially for high-end mobile phones.

Why put tempered glass on your smartphone?

Recent smartphone models like the Samsung Galaxy S20 and S21 no longer have keys. The use of the telephone is essentially done via the screen, in particular thanks to the touch-sensitive features of the device. Under these conditions of using your phone, it is important to use tempered glass for the S20 to protect your screen.

Protect the screen from scratches

Sliding your smartphone into your bag or trousers or jacket pocket exposes it to the risk of scratches. These scratches are not pleasant to have on the screen of a mobile phone. They affect the aesthetics of the smartphone, but also the comfort of use. By installing a tempered glass screen protector, you can preserve the design and convenience of your device for the long term.

Reduce the risk of breakage

It is always possible to use a smartphone with scratches, but when it is broken or cracked, the use becomes very complicated. Depending on the severity of the cracks, some areas of the screen may no longer be visible. Sometimes we have difficulty accessing certain features of the mobile phone.

By placing a tempered glass on your smartphone, it is the glass that takes almost all the shock when your phone falls for example. In the event of a violent impact, the glass may break, but the condition of your screen will most certainly be preserved. You will therefore only have to change the thin layer of protection, which will save you a lot less than if you had to replace the screen itself.

In addition, the screen of high-end smartphones like the Samsung Galaxy S20 is a bit expensive. It is therefore better to take the necessary precautions now, because these unpleasant situations do not prevent, even if you are careful.


Limit fingerprints

Most smartphone manufacturers today equip their smartphone screens with an oleophobic coating to protect the screen from fingerprints. The only downside is that this coating starts to lose its effectiveness after some time of use. You will then notice fingerprints on your screen.

When you place the tempered glass on your mobile phone, the marks will appear on the glass, but not on the screen itself. It will stay like new. All you have to do is change the glass. You will therefore not need to invest a certain amount of money to replace the screen of your smartphone.

Why put tempered glass on your Samsung Galaxy S20?

Samsung brand smartphones are among the most popular on the market. Recent models like the Samsung Galaxy S20 are a bit pricey. Considering the money you will have to spend, it is better to protect your investment.

By placing the tempered glass on the screen of your Galaxy S20, you can significantly reduce the risk of scratches and cracks. By doing so, you will be able to take full advantage of your smartphone and use it for longer. The other benefit of placing tempered glass on your S20 is that it reduces eye strain.

In addition to tempered glass to protect the screen, we also advise you to place a silicone or polyurethane shell to preserve the general condition of your smartphone. However, choose a shell adapted to the model of your phone. For example, the Galaxy S10 does not have the same dimensions as the S20. Consider these parameters to choose the ideal case.

How to choose your tempered glass?

To choose the tempered glass that can effectively protect your smartphone, you must take into account certain criteria such as:

Its thickness and diameter

The 0.40mm thick tempered glass films are quite thick, not allowing your case to fit the phone well. Those of 0.20 mm on the other hand are fragile and do not provide good protection for your screen. It is therefore advisable to opt for protective films 0.33 mm thick. These offer an excellent compromise between solidity and finesse. They also allow you to add a shell to your smartphone.

Its hardness and resistance index

For optimal protection of your screen, choose a tempered glass with a 9-hour duration index. It is by far the strongest on the market today.


When buying, opt for a tempered, custom-made glass that adapts very well to the specific dimensions and characters of your smartphone. The protective film must cover the entire screen while bypassing the sensors fitted to the mobile phone. If you are using a smartphone with rounded or curved edges, the film should leave some empty space (a few millimeters) with the edges of the smartphone.

Its coating composition

The protective film must have an oleophobic layer and an adhesive part. The oleophobic layer offers a specific treatment to prevent grease and fingerprints from adhering to the surface of the glass.

This guarantees the cleanliness of the phone, a smooth glide, and good comfort of use similar to the original screen. As for the adhesive part, it must be provided with a silicone film to allow the glass to be easily fixed on the screen. In case of replacement, you must also be able to easily remove the film without leaving traces.