The Complete Guide to Tempered Glass Screen Protectors

The average price to replace a broken smartphone screen is about $200 these days, with some places charging up to $600 to repair the broken glass. The solution to this costly repair? Tempered glass screen protectors.

Tempered glass screen protectors are the best way to protect your smartphone's touchscreen without compromising its sleek design and smooth, responsive capabilities. Likewise, they act as a shield against scratches, smudges, and even drops. 

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In this comprehensive guide, we'll explore everything you need to know about this surprisingly indestructible protective layer of tempered glass: from how it works and what makes it so strong, to why you should use one on your device.

How Do Tempered Glass Screen Protectors Work?

The Complete Guide to Tempered Glass Screen Protectors

First and foremost, how do tempered glass screen protectors stick to your device's screen so well? They work by utilizing a specialized adhesive. This helps keep it firmly in place.

Once you've got the adhesive sticks on your device, the tempered glass can seamlessly fit into the contours of your phone, tablet, or even gaming device while still protecting it from scratches, bumps, and shocks. In this sense, they act as an extra layer of screen protection for your device.

They're constructed from specially processed tempered glass that is designed to absorb and disperse impact, allowing it to take a hit before your screen does. When used properly, they reduce the amount of damage that could have been otherwise dealt to your device. However, you'll need to ensure you install it correctly (which we'll help you with below).

Plus, tempered glass comes in all shapes and sizes so you can find the perfect fit for any device. All in all, these accessories are critical for safeguarding your devices from life's little mishaps. They're so cost-effective these days that it simply makes sense to protect your phone with tempered glass.

Benefits of Tempered Glass Screen Protectors

You might know how screen protectors work. But what other benefits do they offer aside from ensuring your screen doesn't crack? Here are four main benefits of having a glass protector on any device, regardless of how big or small.

Scratch Resistance

Are you tired of scratches marring the pristine beauty of your device? If so, a glass protector is likely just the thing you need. They provide your device with unbeatable scratch resistance.

Whether you accidentally drop it one too many times or simply can't hold back from running your fingernail across the surface, tempered glass screen protectors will keep your device looking like new. They're also great for people who put their phone or tablet into a purse or backpack next to keys and other sharp objects.

Plus, you won't experience any decrease in tactile feedback. So, it'll still feel like a dreamy touch-screen experience just without the added headache of a scratched-up screen.

Heat Resistance

Not only do tempered glass screen protectors provide a great defensive barrier against your finger oils, but they also keep your phone safe from overheating due to excessive exposure to high temperatures. It’s like having a built-in thermostat for your phone that keeps it from getting roasty-toasty when left out in the sun for too long. 

Reduced Glare

Have you ever been outside on a sunny day, trying to use your device only to be blinded by the sun's rays bouncing off its screen? That can be a thing of the past when you invest in tempered glass screen protectors.

Not only do tempered glass protectors provide the ultimate screen protection for your device’s delicate surface, but some also reduce the glare from obnoxious environmental light sources. With a phone screen protector, that pesky afternoon sun won't get in your way whenever you're checking up on work emails or browsing social media. 

Comfortable Fit

Glass screen protectors provide an incredible and snug fit for any device, making it feel like it's barely even there. In addition to that, tempered glass is the standard bearer for improved protection from bumps and scratches. Plastic screen coverings built into phone cases don't always offer that.

Types of Tempered Glass Screen Protectors

screen protector

Image credit: Techno FAQ

Now that you're aware of the benefits, it's time to learn about the different types of screen protectors available. While there are different styles and brands, what we want to dive into are the types of screen protectors for different devices.

Tempered Glass Phone Screen Protectors

If you’re looking for a way to save your phone from inevitable drops, tempered glass screen protectors are your saving grace. Not only is tempered glass stronger than plastic, but most tempered glass screen protectors provide additional benefits like an anti-shatter film and bubble-free installation.

We recommend tempered glass screen protectors for just about everyone. However, they work great if you travel frequently or tend to be accident-prone. Likewise, people who like to use their phones outdoors or have children would especially appreciate tempered glass screen protectors. They'll ensure that both their device and budget will remain safe from costly damage.

Do you rely on your smartphone for photography or professional photo taking? Consider a lens protector, too.

Tempered Glass Tablet Screen Protectors

Whether you're clumsy or just want a little extra protection while preserving an HD viewing experience, tempered glass screen protectors for tablets are the way to go. Who are these great for? People who work in demanding environments with frequent device use. Likewise, tablet gamers and children can often benefit from this added layer of protection.

Even if you drop your tablet by accident, tempered glass won't shatter as regular plastic does — it'll take a few more knocks against the floor before it needs replacing.

Tempered Glass Smart Watch Screen Protectors

Whether you use your smartwatch for running data-tracking apps on race day or the more everyday activity tracking, tempered glass offers a reliable bit of reassurance that your watch face is well protected.

If you're an outdoor enthusiast who takes part in risky activities such as rock climbing or mountain biking, tempered glass screen protectors for smartwatches are an even better investment. They'll ensure your watch can keep up with all the adventure.

Screen Protector Features

samsung screen protector

Image credit: The Hackpost

What are you looking for when comparing different screen protector options? Aside from ensuring it's tempered glass and not plastic, here are some features to consider when comparing your options.


When it comes to glass screen protectors, one size doesn't necessarily fit all. We often forget that the thickness of the glass can have an impact on its ability to protect your device. This is why it's important to consider the thickness of your glass screen protector before buying one. Ensure it's not too thick or too thin to do its job correctly.

Thin glass won't offer much protection from drops or scratches. Glass that's too thick glass could affect your device's touch sensitivity. When in doubt, always choose a glass screen protector with a mid-range thickness. Typically, this is between 0.3 mm and 0.5 mm.


If you're shopping for glass screen protectors, keep coverage in mind. Do you need one that covers the entire front face of your phone, or just the glass? For example, this iPhone 13 Pro Max screen protector provides full coverage. Others you find online don't.

It's an important thought to consider before diving in. After all, glass screen protectors only do so much good if their coverage isn't adequate.

Make sure to measure twice and confirm your screen protector's coverage before hitting the "buy" button. That way, you can be sure that glass works with maximum effectiveness as it guards against any bumps or scratches down the line.


We all want a glass screen protector that’s gentle on our devices and awesomely stylish too. But did you know that the coating material of glass screen protectors can make a big difference in how well it works? Depending on the type of glass screen protector and its coating material, you’ll get certain benefits.

For instance, external oil and dirt can be repelled by hydrophobic glass screen protectors with their nano-coating material, whereas clear-coat ones are great for reducing glare. So, before you choose just any glass screen protector, make sure you get one that is protective as well as aesthetically pleasing.


Some glass screen protectors are crystal-clear, allowing us to see every pixel on-screen without interruption. Others come with built-in glare reduction. The latter is great for outdoor use but the resulting haziness comes at the expense of clarity.

Regardless, when selecting a glass screen protector, it’s important to consider transparency so you can have assurance knowing that your viewing experience won’t be compromised.

How to Choose the Right Screen Protector

With so many different brands and models of tempered glass screen protectors on the market, choosing the right one for your device can seem overwhelming. The good news is that you don't have to choose blindly. Researching the product specifications for your particular device model will help narrow down the selection.

Then, look for one with a scratch-resistant touch-sensitive surface and an anti-fingerprint coating. This will ensure maximum protection against scratches, dirt, and dust buildup. Or, follow this checklist:

  • • Find out the precise measurements for your device
  • • Choose between glossy or matte
  • • Decide if you'd like additional perks (such as scratch resistance or fingerprint ID recognition)

The most important factor is to choose a screen protector that fits perfectly. With a bit of time and research, you'll find the right style and fit for your device.

How to Apply a Screen Protector

Applying a tempered glass screen protector isn't rocket science, but it is important to get it right the first time. There are several steps involved, from cleaning your item of choice to placing the new protector. It all starts with preparing your screen's surface.

Cleaning it completely ensures that no dirt gets stuck between the screen and the glass sheet. Instead of your typical Windex routine, though, opt for a solution that won't damage your device and won't leave any residue once it dries. Regular alcohol should work fine here (however, some screen protectors come with wipes you can use).

Now take the screen protector out of its package and maneuver it carefully over your device's display. Don't worry; any bubbles will work themselves out once placed correctly. If you need to, add guides to help ensure you're placing it directly on top of where you want it to cover.

As an extra step, apply pressure or a gentle heat source across the top of the protector. In some cases, that can help ensure everything settles properly in its place. If you don't notice any bubbles then you can skip this step. Let the screen protector settle for about 24 hours and then add your protective case on top of it.

Protect Your Phone With SUPCASE

Protect your devices from everyday wear and tear with SUPCASE cases and tempered glass screen protectors. They'll keep your phone or other devices safe from dirt, grime, drop damage, and other life's minor mishaps.
Whether you need protection from the inevitable drops and scratches, or just want a good-looking accessory, let SUPCASE help protect your devices by choosing from a variety of stylish cases and ultra-strong tempered glass protectors. If you're ready to upgrade your device's protection, then click here to browse our selection.
Kristel Silang
Kristel Silang is the Content Marketing Manager for SUPCASE. She has been in the marketing industry for 12 years with expertise on content marketing, search engine optimization, and photography. Previous publications she has contributed to include The Manila Times, Compound Butter, and Livingston County CVB.

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