Prices for safety glasses start at 100 rubles and end in the region of 3-4 thousand. They have a set of special characteristics - hardness, oleophobic coating, private filter, etc. What does all this mean and how to choose reliable protection for the display? Here is a quick guide to help you deal with the most popular safety glass questions.
- Нужно ли смартфону защитное стекло? 1 Do I need a smartphone protective glass?
- Защитная пленка и закаленное стекло – в чем разница? 2 Protective film and tempered glass - what is the difference?
- Что такое закаленное стекло? 3 What is tempered glass?
- Может ли закаленное стекло гнуться? 4 Can tempered glass bend?
- Что такое 9Н? 5 What is 9H? Is this an important parameter?
- Я наклеил защитное стекло. 6 I pasted the protective glass. I have nothing to worry about anymore?
Does the smartphone need a protective glass?
In the manufacture of many smartphones today, toughened glass Gorilla Glass, Dragontrail, etc. is used. It can cover both the front and back panels. Its task is to protect the device from minor damage, but you should not fully rely on this protection. Keys, sand, debris in your pocket and bag, the habit of laying your smartphone face down on the table - all these are the reasons why ugly scuffs and scratches appear on the screen. If you drop the smartphone, the touchscreen and display will break. Replacing the screen module will cost several thousand (in the case of an iPhone, the price of such a repair can reach up to 15,000).
Protective glass also does not last forever. It can be scratched and cracked. But you must admit, it’s nice to recognize that it was not the expensive screen itself that crashed, but only the protection that can be removed and replaced with a new one at any time.
Protective film and tempered glass - what is the difference?
Stores offer two types of protective coatings - transparent film and tempered glass.
Polymer films appeared before tempered glass. They are a thin layer of plastic. It must be applied with extreme caution, since it easily collapses and becomes unusable. The film costs quite inexpensively - from 50 rubles, often two pieces are included. It will protect the screen surface from scratches and scuffs, but it will not save when hit.
Tempered glass is more expensive and harder to damage. On average, its purchase costs 600-800 rubles. In principle, this is not such an expensive accessory for a smartphone at the cost of 20+ thousand. Tempered glass is more resistant to mechanical damage than film. If the smartphone falls, it will take a hit on itself, and in addition it will protect the display from moisture.
Of these two options, tempered glass will be the most reasonable purchase. You will give more money for it, but in return you will receive a high level of protection.
What is tempered glass?
In fact, this is ordinary glass, processed at high temperature using chemical compounds. After heating to several hundred degrees, the glass undergoes rapid cooling, resulting in a product of high strength.
The tempered glass for a smartphone has a multilayer structure. It’s easy to stick it on, any person will cope with this task at home. In the package with it will be everything you need - two napkins for cleaning the screen (wet and dry), several stickers and instructions.
Can tempered glass bend?
When you take the tempered glass in your hands, you will feel that it is not so tough: it bends, springy, but quickly returns to its original shape. Just want to ask: how so, this is glass, why does it bend?
Incredible, but true: glass has flexibility.
The screens of the iPhone , iPad, Android smartphone and even the Nintendo Switch have some plasticity margin. 6to5Mac employees showed this in one of their videos. Of course, we do not urge to find out how flexible your gadget's screen is, it won’t end in anything good. Just the opposite, think about how you can protect it.
Not every glass can bend so that it is visible to the human eye. Glasses, coffee tables, decor items are made of thick glass and you can’t bend them with your hands. Tempered glass for a smartphone is primarily thin, thinner than a millimeter, so flexibility is not a defect, but its normal property.
What is 9H? Is this an important parameter?
Safety glasses have their own set of technical properties. Let's talk about the most important.
This is not an indicator of hardness on the Mohs scale, as it might seem. A hardness of 9H means that the product cannot be scratched with a 9H pencil, the toughest of standard types of pencils. In truth, this is not a very reliable test, but it is easy to reproduce at home, confirming that the glass meets the stated level of strength.
To be honest, this is the only parameter that matters when choosing a tempered glass for a smartphone. Unlike polymer protective films , glass easily collects fingerprints. Not fatal, but unpleasant, and carrying a microfiber cloth with you everywhere is also not very convenient. The oleophobic coating protects from prints. This is a thin grease repellent oil layer. If it is, the glass will remain many times less than spots. But you need to remember that the oleophobic coating erases over time. This usually takes 6-8 months.
Defense Standard Defense
Just a marketing ploy, no more. Any glass will break if you make the necessary effort, and military standards do not play an important role here.
Private filter (anti-spyware)
A special layer that hides information on the display when viewed from the side at an angle of 30-40 degrees. This is a feature for those who are very worried about their privacy. If you want to take such a glass, then remember: often it adversely affects the clarity of the image.
Protective glass with a matte finish is not too common and are available mainly for popular smartphones. To buy it or not depends on your personal preferences. You don’t like the shiny glossy screen, stick a frosted glass on it, and excess glare will not irritate your eyes.
I stuck a protective glass. I have nothing to worry about anymore?
The protective glass covers only the screen, it does not surround the smartphone, like a case. If the gadget hits the corner, the force of impact through the body will be transmitted to the display, and then damage cannot be avoided. And this, according to the Wirecutter website, is the most common type of fall. It may happen that the protective glass is unharmed, and the screen itself is covered with a network of cracks.
But if the smartphone flies flat on the floor, then the protection will break first. She will save from scratches, and from the keys in the bag, and from many other troubles.
Properly selected tempered glass takes into account all the features of the display (rounded edges, frames, cutouts, fingerprint, etc.), it does not reduce the sensitivity of the touchscreen and does not interfere with the use of an on-screen fingerprint scanner. However, the protective glass is not a replacement for the case and in no case is a guarantee that the smartphone will not receive any injuries if it falls. This is one way to extend the life of the gadget and avoid expensive repairs.