The screen is the main element of smartphones, but it remains fragile. In addition, the smartphone screen is getting bigger for our visual comfort and because it has become more than a phone: a real little tablet.
Our smartphones follow us everywhere today in the metro, outside, at home and have a high probability not only of scratching but especially of falling and breaking.
To call, to consult internet, to play etc … the screen is constantly solicited by our hands not always clean.
That’s why there is today on the market what has really become a phenomenon: « tempered glass ».
Made from the same technology as armored glass, this tempered glass can effectively protect the screen of your smartphone against drops, impacts, scratches, scratches.
Be careful you must understand that this glass may eventually break in the long run, but it will absorb in the meantime many impacts and your screen will remain intact.
There are so-called toughness indexes of tempered glass, the most effective on the market being 9H. But beware, it’s not time! It is not 9H protection as some might think wrongly, because as such, it would be disposable glass!
This index 9H indicates the resistance of a material to be marked by another, by a scratch or penetration.
To give you an idea that the quality, 9H is a standard index for a protective film. They do not all have the same index of hardness, the best are those who have this index.
But why the glass will you say to me?
In my opinion, tempered glass can recreate the tactile touch of the original screen. Our experience with the smartphone is digital, we slide our fingers on the screen and unlike a plastic film, the glide remains remarkably preserved and pleasant.In addition, glass is a material that allows more than other materials to pass light. Putting a protection on your smartphone does not impact the visibility of your screen.
The penetration rate of light is not identical from one tempered glass to another!
Another quality not less appreciable tempered glass: It makes the original screen impermeable to dirt (fingertips fat fingers for example) or dust.
We who constantly use our smartphone screen, this is a significant element.
Finally design point of view: the best tempered glasses are thin with rounded edges, which allows them perfect adhesion to the original screen. They must be as visible as possible and do not create over-thickness.
And for those who are used to protective plastic films, do not worry, no masking in sight! No more unsightly bubbles that appear and hide your screen. The best tempered glasses on the market have a silicone layer that will increase adhesion at the time of installation and prevent bubbles from forming.
Finally, I think it’s a good investment for your smartphone that will last much longer.

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How to choose a good tempered glass?
You have to look at several things to choose a quality tempered glass:
The hardness index
– Its hardness index on the Mohs scale must be at least between 6 and 9 H. The best tempered glasses have a 9H index. This high index is what allows the shock absorption by tempered glass in case of fall or shock.

-Son indice de dureté sur l’échelle de Mohs doit être compris au moins entre 6 et 9 H. Les meilleurs verres trempés ont un indice 9H. Cette indice élevé est ce qui permet l’absorption des chocs par le verre trempé en cas de chute ou choc.
– This index of hardness is also what makes the glass scratchproof. Quality tempered glass is actually able to withstand the scratching of a screwdriver or blunt objects.
The coatings that compose it
A good tempered glass has a so-called oleophobic layer, a surface anti-grease treatment that prevents impregnation of the fingers. It also reduces the reflection of light.
A good tempered glass must also have a silicone layer to guarantee a perfect adhesion and the absence of delamination.
The diameter of the glass
Tempered glass too thick (beyond 0.30 mm) will not allow the installation of a hull later
In addition, it will create a completely unsightly over-thickness and inevitably alter the touch responsiveness of the screen. It will be necessary to press more on the fingers.
A good tempered glass must therefore be rather thin because its resistance is not determined by its thickness but by its inherent qualities and the layers that compose.
Curved Edges
A good tempered glass should have beveled edges if possible because all smartphones have screens with rounded or slightly rounded edges. If the tempered glass does not respect this curvature, it may create badly adapted angles and protrusions that will be very annoying when sliding.
A glass must be customized and not adaptable
There are two types of glasses on the market:
– Generic lenses: adaptable that can work with several brands and brand variations. These glasses are to be avoided because inevitably badly calibrated. The slots that bypass the function buttons will be more or less coarse and often cut wide to fit all devices. This will also create dirt since they will accumulate more easily if the slots are coarse and this will affect the long-term tactile quality of the buttons.
– Customized glasses totally designed for the brand and the precise declination of the brand: We must focus on this type of glass. The details will be more precise and the slots that must bypass the function buttons – which must remain uncovered – will be more precise and finer.
These details are far from being purely aesthetic, because the more a glass is customized, the more its adhesion is reinforced. Out of adhesion is what determines the quality of tempered glass and its length of life.
Many badly adapted toughened glasses eventually break through the edges or come off.
The absorption rate of light
A good tempered glass should let the light penetrate almost 100% without creating opacity.
A coating with a silicone layer
This layer not only allows a better adhesion but above all allows to uninstall the glass without damaging the original screen.
Compatibility with laying a cas and stylus
Look for information on this very important point because it would be very stupid to only protect the screen knowing that the back of your smartphone must also be protected by a cas. It is also necessary that the tempered glass can allow the use of the stylus.
Preserving the touch responsiveness of your smartphone
A good tempered glass should allow a touch responsiveness close to that of the original screen to avoid having to press more on the fingers or simply lose the quality of digital comfort.
Quality and fluidity of sliding
A good tempered glass should allow a sliding and touch of sliding close to the original screen, fluid.
Easy to install and uninstall
A good tempered glass should be easy to put in place. It must be easily uninstalled without creating scratches or damaging the original screen.
Breakdown technology
A good tempered glass must be able to break if the shock is too rough without bursting and endangering the user. When it breaks, it has to do it by cracking himself.
If you need a tempered glass meeting all these criteria, click on this link => Link