With iPhone 17, Apple added anti-reflective (AR) coating to the display glass as part of Ceramic Shield 2. The new display cuts reflections by about half (compared to iPhone 16) and offers greater visual clarity in harsh lighting conditions.
It’s a subtle difference and a noticeable upgrade. Even in direct light, text and images stay crisp. Colors are more natural, and the display is easier to see in outdoor environments.
Because AR coatings are traditionally applied via screen protectors — not coated directly into the display glass — the Astropad team got curious. We wanted to understand more about Apple’s AR coating, how it manages reflectivity, and what happens when a screen protector is installed above the glass.
Using our own light-measurement tests, we tried to understand how these elements might interact with one another. That research ultimately inspired us to create Fresh Coat, our very own anti-reflective screen protector. It also gave us some unique insights into how Ceramic Shield 2 interacts with light.
Here’s a closer look at what we found.
Key takeaways
- iPhone 17 cuts reflections by about 50% when compared to iPhone 16 and other legacy iPhone models.
- Applying a screen protector without its own AR coating to iPhone 17 will disrupt Ceramic Shield 2’s anti-reflective properties.
- Fresh Coat by Astropad enhances AR clarity on any iPhone, creating a surface nearly 4x less reflective than the display on an iPhone 16 and 2x less reflective than iPhone 17’s Ceramic Shield 2.
What is anti-reflective coating
An anti-reflective coating is a thin optical layer that reduces glare and surface reflections. By design, these coatings minimize how much light bounces off a reflective surface (like glass) and enable more light to pass through to the display beneath it.
As a result, your screen appears brighter, clearer, and easier to see in tough lighting conditions. The AR coating keeps text crisp, colors accurate, and on-screen details visible, even in bright sunlight.
To achieve this effect, AR coatings work through a process called destructive interference. Ultra-thin layers of material are stacked on the surface of the glass, each with slightly different optical properties. These layers are tuned so that reflected light waves from each layer cancel one another out. The process depends on precise thickness, refractive index, and the presence of air above the coating (important!) to create the right interference pattern.
This level of fine-tuning is what makes AR coatings so effective, and why small changes in materials or surface conditions can dramatically alter how they perform.
How iPhone 17 uses anti-reflective coating
Apple’s Ceramic Shield 2 adds AR coating directly to the iPhone 17’s display glass, rather than relying on an external film or protector. The display is meant to manage reflections on its own, as light strikes the AR layer included above the glass.
Unfortunately, this presents a problem for iPhone users who want to buy a screen protector — something that’s generally considered a good idea for most users.
Previously, anti-reflectivity was only available via specialized screen protectors, which are installed on top of the glass. In this scenario, the AR coating is still tuned for and interacting directly with air. The reflections are managed, and light passes down through the protector and onto the display.
With iPhone 17, AR protection is applied directly to the glass. When a screen protector is installed, the protector adheres to the iPhone display with a thin layer of adhesive. However, because AR coatings are tuned for and rely on direct contact with air, covering the coating with glue essentially cancels its effectiveness. The coating is still present, but it can’t function properly while covered.
While testing, we found that screen protectors without their own anti-reflective coating caused enough interference to effectively double the amount of reflectivity on the display! The AR coating can’t function properly because it’s no longer in contact with air.
This also means that, if you apply a screen protector with its own anti-reflective coating, you’re effectively replacing Ceramic Shield 2’s AR functionality with a screen protector that produces similar results. With Fresh Coat, AR functionality improves by 2x when compared to iPhone 17’s bare display.
Data & testing: How we measure reflections
To better understand iPhone 17’s anti-reflectivity performance, we set up a controlled test designed to measure how much light various screens will reflect under the same conditions.
We used a broad-spectrum light positioned at a 20-degree angle and shined it onto multiple surfaces, then recorded how much of that light bounced back toward a sensor. To create a baseline, we started with a mirror, since mirrors reflect nearly all incoming light. Afterward, we applied the same methodology to various iPhone screens, including some with screen protectors.
Our findings were consistent across multiple trials:
| Device | Reflectance |
|---|---|
| Mirror (baseline) | 90.5% |
| iPhone 16 Pro | 3.8% |
| iPhone 17 | 2.1% |
| iPhone 17 Pro / Pro Max / Air | 2.0% |
| iPhone 17 + Fresh Coat | 1.0% |
| iPhone 17 + generic screen protector | 4.6% |
The results show that iPhone 17 reflects about half as much light as iPhone 16, confirming Apple’s anti-reflective improvements with Ceramic Shield 2.
However, adding a typical screen protector — one without anti-reflective properties of its own — dramatically increases reflectivity beyond the bare screen, essentially removing the benefit of the built-in AR layer and worsening its effectiveness.
By contrast, when Fresh Coat is applied, the screen protector’s AR layers essentially replace Ceramic Shield 2’s AR technology with something even better.
Small numbers, big difference
Compared to a mirror, all iPhone screens only reflect a small amount of light. Even the iPhone 16 Pro, which reflects about 3.8% of incoming light, performs extremely well by modern display standards. Because those values are in the single digits, it might seem like lowering them by another point or two wouldn’t matter all that much.
In practice, it makes a huge difference. When you’re outdoors on a bright day, sunlight is thousands of times stronger than the light coming from your screen. Those two light sources are competing with one another. When even a small percentage of ambient, outdoor light is reflected back from your screen, it’s enough to wash out contrast, dull colors, and make the display harder to read.
Even reducing reflectivity from 4% to 2% results in a noticeable improvement in visibility. Getting that percentage down to 1%, as we saw with Fresh Coat, keeps images crisp and clear, even in outdoor conditions. That matters, as the difference of just a few percentage points can be the difference between squinting at your phone and seeing the display without issues.
Practical benefits
Numbers and data only tell part of the story. The real difference with anti-reflective technology is how it feels to use your iPhone on a day-to-day basis. Overall, the screen looks calmer, more vibrant, and easier on the eyes in every kind of light.
As the reflection percentages decrease, here’s what you’re most likely to notice right away:
- Better outdoor visibility. Reflections are reduced before they reach your eyes, so your screens remain readable even under direct sunlight. That allows you to check messages, take photos, and stay connected without searching for shade or tilting the phone to find a better view.
- Truer color and contrast. With less glare bouncing back, on-screen colors appear richer and more accurate. Blacks look deeper, whites look cleaner, and visuals appear more vibrant. This is huge when trying to read anything in harsh lighting conditions, as a lack of contrast can make it difficult to separate text from backgrounds and reflections.
- Reduced eye strain. Dealing with fewer reflections means that you’ll squint less and won’t have to focus as hard when looking at your phone in tough and unfavorable conditions.
- Smudge and scratch protection. AR coatings work hand-in-hand with a durable glass surface to resist fingerprints and protect against daily wear while preserving the clarity of the display.
Together, these benefits make it easier to interact with and manipulate your iPhone when conditions aren’t ideal. With Fresh Coat, it’s possible to leverage anti-reflectivity technology to get the best view of your phone in almost any environment. That’s huge for busy users, creative professionals, and anyone who wants to get the most out of their device at all times.
It’s also worth pointing out that AR coating doesn’t interfere with sensors or swipe accuracy, so you don’t have to worry about causing problems with things like Face ID or touches and gestures.
Not on iPhone 17 yet? Fresh Coat still cuts glare
While we’ve mostly discussed the iPhone 17 and Ceramic Shield 2, keep in mind that you don’t need a new iPhone to get the benefits of modern AR technology.
Constructed from tempered glass (one of the most popular types of screen protector), Fresh Coat brings next-generation clarity to earlier iPhones, giving older devices a noticeable visual upgrade.
When applied to legacy models (iPhone 15 and 16), Fresh Coat always brings reflectivity to 1%, reducing surface reflections dramatically when compared to uncoated glass. Plus, the tempered glass continues to protect your display from scratches, smudges, and dust.
It’s a direct improvement over the AR coating offered by Ceramic Shield 2, resulting in fewer harsh glares, cleaner colors, and a more comfortable viewing experience whenever you use your phone.
Overall, it’s a simple and affordable way to refresh your screen and upgrade your viewing experience without replacing your device.
Get even better visuals from your iPhone with Fresh Coat
All of the testing we conducted around anti-reflectivity and Ceramic Shield 2 went into the making of Fresh Coat, our own anti-reflective glass screen protector for iPhone.
Aside from improved visuals, Fresh Coat also adds durability and defense through a five-layer setup that includes “armorine” tempered glass, a dust barrier, “airbased” impact-resistant bonding, as well as an oleophobic / hydrophobic coating.
We used the findings from our research to create an AR coating that dramatically reduces reflections, even when compared to Ceramic Shield 2. This means that applying Fresh Coat to any phone — including iPhone 17 — will result in a direct visual improvement over a naked display.
On iPhone 17, Fresh Coat effectively replaces any native AR properties because applying any screen protector prevents Ceramic Shield 2’s anti-reflectivity from functioning correctly. In this scenario, Fresh Coat not only provides additional protection for the display; it also provides a visual boost that’s impossible to miss.
Every layer of Fresh Coat is engineered for optical precision and exceptional performance for iPhone users. Pick up Fresh Coat today and take your display to the next level.
FAQ
Does Fresh Coat affect Face ID or touch sensitivity?
No.
Fresh Coat is precisely engineered to match the optical and touch properties of your iPhone’s display. It’s thin enough for Face ID to read depth data accuracy and smooth enough that gestures feel similar to bare glass.
At 0.6mm slim, the protector won’t add input lag or change screen responsiveness, so unlocking your phone, typing, and navigating all feel completely natural.
Will installing Fresh Coat damage or remove Apple’s AR coating?
No. Fresh Coat adheres to your device using a gentle adhesive that bonds securely with Apple’s Ceramic Shield.
The protector can be removed cleanly at any time without leaving residue or altering the factory coating. Your phone’s display remains exactly as it was before installation.
Does Fresh Coat make it easier to see outdoors?
Yes! It was built with that purpose in mind.
The anti-reflective layer dramatically reduces glare in sunlight and bright indoor light, so you’ll be able to see your screen without tilting or shading it. Text remains sharp, photos retain their color, and contrast stays strong even when the display is struck by direct light.
Even in more comfortable settings, you’ll enjoy better contrasts and visual fidelity every time you interact with your iPhone.
How long does the AR coating last?
Fresh Coat’s anti-reflective coating is built directly into the glass surface rather than sprayed or laminated on top.
It’s permanent, durable, and resistant to wear from daily use, cleaning, or contact with cases. Because of this, the AR performance lasts for the lifetime of the protector without the need for maintenance, upkeep, or a replacement.
Can Fresh Coat protect older iPhones?
Definitely. Fresh Coat is available for iPhone 15 through iPhone 17 and gives older models a refined, visual clarity that’s even better than what’s offered in Apple’s newest displays.
Users can expect vastly reduced glare, better contrast, and a more modern look on earlier displays. It’s a great option for anyone who isn’t ready to upgrade but wants to refresh their device with next-generation display technology.
