What kind of protective glass to choose for a smartphone

What kind of protective glass to choose for a smartphone

What kind of protective glass to choose for a smartphone.

Sooner or later, scratches, chips, and more serious damage appear on the screen of any smartphone. This is due to the fact that you carry a gadget in your pocket with keys, coins, accidental hits, falls, and other influences. How to protect the display, make sure that the surface remains perfectly smooth? An excellent solution would be to stick on a protective glass purchased, for example, in our online store “HokoRus”.

Protective glass: what kind of accessory?

Classic panels made of heavy-duty tempered glass are laminated products. They are made of tempered glass (Tempered Glass), treated with special chemical compounds. Let’s take a closer look at what the structure is.

Manufacturing technology

  • First, special blanks are made from sheets of ordinary glass, taking into account the brand of the smartphone for which they are intended.
  • After that, holes for the camera, speakers, connectors, and buttons “Home” are cut out in the raw accessories on CNC machines. Next, the workpiece is subjected to grinding to remove irregularities, sharp edges.
  • Then the workpieces are sent for ultrasonic cleaning in baths filled with a special absorbent solution.
  • Then the glass is hardened, fired at a temperature of +680 o C. The hardening time ranges from 4-6 hours until the hardness on the Mohs scale reaches the hardness of 9H.
  • After the finished accessories are cooled, rinsing off the remaining chemical substances. Then they are sent to the workshop, where an oleophobic coating is applied, a print, and other properties are given a certain color.

The oleophobic coating is applied to the upper part of the product using the method of electrolytic spraying. To reduce wear and tear, after the glass has been coated with oleophobic spraying, it is sent back to the oven for repeated high-temperature firing.

At the very end, with protective accessories, do the following:

  • An adhesive layer is applied using a special machine using such adhesive bases as AB glue, Nippa, Toyo.
  • Laminated with an anti-splinter film . If it suddenly breaks, it will not scatter into small particles, which will protect the user from being cut by fragments.


In addition to the fact that glasses are tempered , carbon fiber , they are classified into these types of glossy , matte , confidential (private). In addition, they can be:

  • mirrored;
  • anti-glare ;
  • with oleophobic coating ;
  • shockproof ;
  • 3D ;
  • liquid.

The most common are glossy ones like this and this . Characteristic features include impeccable protective functions, invisibility after gluing. Also good color rendition, brightness of the screen, when the user sees the picture without any distortion.

Matte ones distort the picture a little, but they have a quality that glossy ones do not have – in bright sunlight, artificial light, the image does not fade. If you often use your mobile device outdoors, in well-lit rooms, opt for a matte accessory.

Private or confidential – this is a special kind of accessories, they differ from the rest in their darkening. Why is this needed?

  • The fact is that with it, what is displayed on the screen can be seen at right angles.
  • If you look at the display from different angles, you will see only a black display instead of a picture.
  • As soon as you turn the phone to your face, the image becomes visible again.

Buy such a product is worth those who want to hide the information displayed on the screen from prying eyes. For example, at work, in public transport, only you will have access to what the display shows. For those around him, he will remain black.

Features of 3D accessories

What is 3D protective glass for iPhone? It differs from the classic hardened one in that its edges are slightly bent, exactly repeating the rounded sides of the display, the contours of the aluminum ends. The accessory protects not only the most vulnerable part of the touch screen. The entire front panel of the case also receives additional protection. If you want to completely protect your iPhone from external influences, there are also protective 3D glasses for the back of the device.

Our online store “HokoRus” also sells 3D glasses. We offer shockproof panels for different generations of iPhone:

  • for iPhone 6 Plus / 6S – 3D glass (SP2) for iPhone 6 Plus / 6S Plus Black ;
  • for iPhone 6,6S – protective glass 3D CaseGuru for iPhone 6,6S White 0.33 mm;
  • for iPhone 7 Plus – 3D CaseGuru glass for iPhone 7 Plus White 0.33 mm ;
  • for iPhone 8, this is also on this page .

What is the Difference Between 2D, 2.5D, 3D

Smartphone screens of earlier versions were protected by an ordinary glass rectangle without perfectly polished edges, just well recessed into the body. This is how classic 2D glass looks like. Then 2.5D, 3D modifications appeared, which means that the sides, corners of the accessories have already become rounded, carefully polished.

Good to know! Glasses 2.5 D, 3 D are characterized by the fact that the screen flows smoothly from the body, the device looks smooth, monolithic. They create the effect of three-dimensionality, panoramic images, enliven the picture, and give the gadget a presentable look.

What is the difference between 3D and 2.5D?

  • 2.5D – absolutely flat, but with rounded edges, glued faster, easier, cheaper. Regardless of whether universal or model, they are glued with a gap of 1 mm at the edges.
  • 3D – curved, exactly repeat the shape of the cell phone case, are more expensive, and require utmost care when gluing. After installation, the front panel of the mobile gadget is completely closed. Looks like part of a whole, not as a separate, just glued accessory.
  • Accessories of the budget line, from unknown manufacturers, come with hard edges.
  • If the front panel of your gadget has beveled edges, such protection will not work.
  • It is better to buy Fullscreen glass with soft, flexible edges that bend easily, exactly following the configuration of the smartphone.

Important! If the flat accessory is 2.5 D glued to a smartphone, where the sides are sloping, the glass will be narrower than the display, or there will be unprotected, non-glued areas along the edges of the front panel.

One of the varieties of 2.5D – the Fullscreen model, is the same glass, but with a frame around the perimeter. It completely imitates the external features of the front panel of the device, completely covers the display, gluing also to the sidewalls. The good thing is that after gluing it is practically invisible to the eye. However, when buying, it is important to pay attention to the edges of the product.

Pros of 3D, are there any cons

The advantages of 3D accessories over conventional tempered glasses are that they are ideally matched to the parameters and shape of the case. They completely cover the front of the device, without impairing the sensitivity and operation of the sensor. Almost all come with a 9H hardness index on the Mohs scale, while thin, weighing no more than 10 g. If you can assign a certain color to selected subscribers in your smartphone, during a call you will see even from a distance who is calling you. For complete protection of the device, as already mentioned, you can buy a glass panel on the back of your smartphone.

Does 3D protection have any disadvantages? As such, it is difficult to name some of the nuances, but they are still there.

  • The production costs for the release of 3D products are higher, which is naturally reflected in the final cost of the accessory. But if you are not indifferent to how your phone is protected, it is worth buying a good glass.
  • The gluing of 3D panels requires accuracy and utmost attention. If the slightest curvature is allowed, there will be protruding edges, air bubbles, you will have to re-glue it.

If you want to buy quality accessories at affordable prices, choose products from a domestic manufacturer. For example, any consumer can afford protective glasses of the Russian brand CaseGuru. The quality is in no way inferior to the goods of eminent, foreign companies that offer the same, but more expensive.

By the way! Today, other glasses are produced for the iPhone, for example, 4D, 5D, 6D. How is it different from 3D? The fact that they have become even thinner, lighter, super strong, but not suitable for all models of smartphones.

About sapphire panels

Glass made of artificial sapphire mineral is widely used today in electronics and other industries. Heavy-duty material is used for the production of steel Apple Watch screens, dials of almost all expensive wristwatches. It is used in smartphones of the premium Vertu segment, to protect the camera, fingerprint scanner in the iPhone, and other gadgets. Let’s consider the main characteristics of a unique material, why it has a great future.

Physical properties

Natural sapphire is a precious transparent mineral of yellow, red, orange, green, purple colors. The main feature lies in the crystal structure, which imparts super-strength and transparency. Main characteristics:

  • It is considered one of the most difficult minerals on the planet.
  • Stronger, harder than steel, but more fragile than diamond.
  • Hardness on the 10-point Mohs scale – 9.
  • Difficult to process, cut with special diamond saws.

Why sapphire glasses are not used on all mobile phones

Natural mineral is very expensive, therefore it is rarely used in mass production. Today, the production of artificial sapphire, obtained from molten Al 2 O 3 , has been launched . For the first time a synthetic crystal made of aluminum oxide, which was exposed to high temperatures and pressure, was obtained at the beginning of the 20th century by the French chemist Augustus Verneuil. The technology is still relevant today.

The production of artificial minerals is established in many countries of the world: Russia, USA, Japan, South Korea, etc. However, manufacturers of mobile devices are in no hurry to massively use sapphire glasses for the production of protective screens. This is because the cost is much more expensive than analogues, the same worldwide popular Gorilla Class, whose glasses are used by such giants of the mobile industry as Apple, Acer, Dell, Samsung and HTC.

  • One of the main suppliers of sapphire glasses to Apple was previously GT Advanced.
  • However, in 2017, the manufacturer filed for bankruptcy, ending cooperation with the apple brand.

Today, many leading experts agree that sapphire glasses have a great future, but so far their quality and characteristics are somewhat inferior to their counterparts, all the same Gorilla Class from Corning.

  • To come close to Gorilla Class in strength, sapphire crystal must be much thicker, and therefore heavier.
  • The artificial mineral backing panel is more expensive and has a much higher glare.
  • The main disadvantage of sapphire accessories is that they retain their protective properties much worse than the heavy-duty Gorilla Class. More fragile counterparts fly to smithereens with a powerful blow.

Nevertheless, the companies producing mobile gadgets are confident that the situation will change in the near future, sapphire crystals will appear on many modern devices. Already today, all over the world, developments are underway to make panels made of artificial minerals thinner, more durable, and at the same time cheaper.

Which is better, film or glass?

Every owner of a mobile device sooner or later asks the question: which is better than film or glass? To figure it out, let’s look at the pros and cons of both accessories.

Do I need glass at all on a smartphone

The screens of top-end and less expensive gadgets are standardly equipped with special glass protection. Most mobile device manufacturers use Corning Gorilla Glass, a glass that is chemically made to be super strong and durable.

  • According to the assurances of the manufacturers of mobile devices, it is reliable, of high quality, and successfully copes with a variety of negative effects on the screen.
  • On the Internet, on YouTube, there are a lot of videos showing how they try to pick the smart screen with a screwdriver, drill, hit with a hammer, a stone, grab with scissors, knives. And, they say, nothing, the display is not damaged in any way.

So why buy another screen protector when you have Corning Gorilla Glass? The fact is that no matter how durable the accessory that the smart is equipped with, it does not withstand abrasive compounds well. For example, if you are relaxing on the beach, sand accidentally gets on the screen, scratches will remain. Therefore, buying additional protection definitely does not hurt. In addition, do not forget that it is cheaper to buy and attach a protective panel than to pay by changing the screen at a service center.

So, let’s summarize, what are the advantages of protective glasses, is it worth spending money on them:

  • Plus the first – protection from scratches, scuffs . Do not be amused by the hope that if the screen is protected by a Gorilla Glass panel, your device will not be afraid of any damage. Unfortunately, even super-strong material is covered with scratches over time. For example, the same sand is ordinary quartz, which is superior in hardness to tempered glass. With added protection, Gorilla Glass will stay perfectly smooth for a long time.
  • Plus the second – protection of the display from splitting when the smart falls . The screen is quite easy to break, even if the smart falls from a small height, but unsuccessfully. If there is a protective panel, when it falls, it will take a hit on itself. As a result, it will crack, become covered with a network of cracks, and the display will remain intact.
  • Plus the third – protection from greasy stains, dust, dirt . Accessories with an oleophobic coating will reliably protect against fingerprints, adhesion of dust, dirt. Especially recommended for gadgets of the budget line, in which the display is minimally protected. Oleophobic glass will be a good protection for premium smartphones and flagship devices. Native, applied to the screen during the release of gadgets, is erased over time, covered with small scratches. This creates an unpleasant foggy bloom on the display, reduces the brightness and clarity of the picture.

The conclusion suggests itself. If there are many different opinions about covers, films, then a heavy-duty glass panel will definitely not interfere with your gadget.

Do you need protective glasses or is it better to buy covers, films? The following video will help to understand the question, find answers: https://www.youtube.com/watch?v=1F7jm9PWNGw

Does the accessory interfere with smart control

It was mentioned above that the thickness of most products is standard, on average no more than 0.3 mm. There is no need to be afraid that this will somehow interfere with the comfortable use of the gadget. In fact, after gluing the protective panel is practically invisible to the eye, imperceptible with your fingers.

  • The high transparency of the product ensures that after gluing the picture will remain the same clear, bright and detailed. Color rendering, other qualities, characteristics will remain unchanged.
  • Small thickness, smoothness of the accessory does not interfere with easy control of the device. The finger will still slide smoothly across the screen, and the sensor will respond to the slightest touch.

How to choose good glass

Which glass is best for a smartphone? When choosing, in addition to the price, they are guided by such parameters as the type, diagonal of the gadget, panel color, originality, options, manufacturer.

The following recommendations will help you choose a high-quality, affordable product:

  • Pay attention to which gadget it is intended for. Products that are suitable for all smartphones with a certain screen diagonal are considered universal, for example, as a universal glass 5.0 or a protective panel for devices with a 4.0-inch display. But there are others on sale that are designed for a certain brand of gadget, for example, 4D Glass for iPhone 6 Plus or 3D CaseGuru for iPhone 6,6S White 0.33 mm .
  • If the screen of the device is curved, buy only products with 2.5D, 3D effect. Others may not cover the entire display or stick around the edges. If you doubt what will fit, consult with the seller, the manager offering the goods.
  • Before buying, check that the holes for the camera, speakers, ports coincide with the location of similar elements on your device. Then you will not be able to cut, sharpen, cut, or adjust something.
  • Be sure to check the hardness on the Mohs scale. It is indicated by the manufacturer on the packaging.
  • As for the thickness, what to choose depends on personal preferences, situations in which you use the gadget. If you use your phone at home, an accessory up to 0.3-0.5 mm thick will be enough. When operating conditions are extreme, choose options for maximum thickness, hardness, strength.
  • Matte, glossy, colored or private – decide for yourself. Choose what is convenient, suitable for quality, price, and other parameters. Oleophobic matt is ideal for those who spend a lot of time outdoors. If you use the device mainly indoors, pay attention to an ultra-transparent or glossy accessory of reduced thickness, but with an oleophobic layer. Do you have to spend most of your time in crowded rooms, on the street? Then buy a glossy or private panel, always with an oleophobic coating.
  • Give preference to accessories with an oleophobic coating. The display with them is always clean, neat, without traces of adhesion of dirt, greasy stains from fingers. Remember that the main enemy of the oleophobic surface is friction, especially if you are used to wearing smart in the pockets of clothes, a backpack, a bag, but without a cover. Any hard objects, rough fabrics, abrasives, hard materials gradually but inevitably destroy the thinnest oleophobic layer. Rapid wear also occurs upon contact with concentrated alcohols, alkalis, solvents, any liquids, suspensions containing them.
  • Glasses with colored frames are on sale. Is it worth buying or not? Experts recommend avoiding such protection. The fact is that in accessories with colored frames, the glue is applied only along the edges. After gluing, at first everything will look presentable, but over time, unsightly gasoline spots will appear on the edges of the screen. It will be possible to get rid of oily stains only by replacing the glass.

We glue the protective glass ourselves

How to properly glue the glass on a smartphone? It’s simple.

  • Prepare your workplace.This is important, because if dust gets under the transparent panel, bubbles will form, which will be impossible to remove. Before starting work, do a wet cleaning of the room, ventilate it. Use a damp, clean cloth to wipe off dust from the table, furniture, where you will glue. Ideally, wipe the work surfaces with water and detergent, preferably with an anti-static effect.
  • Of the tools you will need: liquid for cleaning smartphone displays. If there is no special tool, ordinary diluted alcohol, an antistatic agent, will do. Also prepare a microfiber cloth, a scraper (can be replaced with a plastic card), tape (transparent only), scissors.
  • First, we will degrease the surface by wiping it with a special solution, diluted alcohol, and an antistatic agent. If there was a film on the phone, you removed it, you need to carefully remove the remnants of the glue. Once the dirt has been removed, wipe the screen dry with a microfiber cloth.
  • We expose the accessory in relation to the screen. We take the protective glass in our hands, remove the film, which is glued to one of the sides. With your fingers, gently hold the transparent panel by the edges so that there are no prints on the surface. We carefully place the glass at a distance of about 5-10 mm from the smart, trying not to touch the display. We align it so that the holes on the accessory coincide with the location of the buttons and speakers.
  • We glue the accessory. First, we set it perfectly, aligning it along the edge, then carefully lower it onto the display. Due to the sticky adhesive coating, it will attach itself easily, quickly. Carefully remove small bubbles, irregularities with a soft napkin. Just wipe it, going from the center to the edges, pressing lightly so that excess air comes out.

The process of gluing the protective coating is simple, but if you do it for the first time, it may not work out perfectly. For example, you missed something, a speck of dust still got under the accessory, leaving a bubble that cannot be removed by wiping. What to do in this case? It’s a pity, but microfiber won’t help here. We’ll have to raise the glass again, remove flaws.

  • A scraper or card, a strip of transparent stationery tape will help in this.
  • It is necessary to carefully pry off the edge of the glass panel, raise it so that the speck can be easily removed.
  • After that, carefully glue the stationery tape onto the speck of dust, tear it off sharply. Debris should remain on the adhesive and the screen should remain perfectly clean.

At the end, all that remains is to return the protective panel to its original place, gently polish the surface with a soft cloth.

Can you re-paste

If the protective accessory is of high quality, not from a third-party, unknown brand, re-sticking is possible.

  • First, carefully remove the glass panel.
  • Treat the screen of the device with formic alcohol to degrease and remove blemishes. To do this, wipe with a napkin soaked in alcohol, then do not wipe, but let the liquid drain quietly by itself.
  • When the surface is dry, carefully install the panel in the same way as described above.
  • Wipe the top with light strokes from the center to the edges so that excess moisture and air bubbles come out. If there are small bumps left where air has collected, do not worry. After a day, they will disappear by themselves. The main thing is to pop out large bubbles.

How to remove the glass yourself

It is difficult to dismantle a coating that has stood for a long time, especially if the protection is damaged by a fall.

  • Arm yourself with a plastic card or scraper.
  • Pry off the edge of the glass gently.
  • After that, gently walk with a scraper, a plastic card around the perimeter.
  • Remove the accessory.

The glass is peeling off, what should I do?

Why does a recently glued accessory come off?

  • Obviously, mistakes were made during the process, or the product was initially defective.
  • If you are sure of the quality of the product, then the screen was poorly cleaned. The second protection will fit perfectly only if the display is completely grease-free, there are no micro-particles of dirt or dust left on it.

What to do now? Buy new, stick it again.

What to do if not stuck around the edges

There are two options to solve the problem:

  • Purchase a special gel edge gluer. They are smeared with problem areas, then gently pressed, expelling air bubbles.
  • Correct the situation with improvised means. First, prepare a napkin, a thin brush, a little glycerin or vegetable oil. With a brush, carefully take a drop of oil, glycerin, apply to the edge of the glass. We make sure that the oily substance hits exactly the joint, completely fills the voids. After carefully remove the air, blot the remaining oil and glycerin with a napkin.

Remember! The fewer defects after gluing, the better the result will be. The degree of protection of the display, brightness, clarity of the picture depends on this.

How to care

Putting glass on a smartphone is not a problem, but do you need any special care later? Yes, absolutely. An oleophobic coating has its main enemy – friction. During wiping, it is important to minimize the chance of damaging the thin film.

  • Use a soft microfiber cloth to wipe the screen.
  • Use only products with a low alcohol content (up to 60%, no more).
  • Do not glue the protective glass and film at once. Otherwise, after removing the latter, traces of glue will remain on the surface, it will be almost impossible to remove flaws.
  • Buy a smart special case, especially if you constantly carry bags and clothes in your pocket.
  • Do not leave your smart phone in the hot sun for a long time. The oleophobic coating is sensitive to ultraviolet light, and under its action it breaks down more quickly.

Important! Do not wipe the protected display with wet cleaning wipes or polishing other smooth surfaces. Especially avoid accessories, liquids intended for car windows.

Leave a Reply

Your email address will not be published.