Sierra Blue iPhone 13 Pro Differs From All Other Models in Hidden Way
Sierra Blue is Apple's new color with the iPhone 13 Pro and iPhone 13 Pro Max, and it has now emerged that the Sierra Blue iPhone 13 Pro differs from all other iPhone models in a way that may not be immediately obvious.

Sierra Blue is the first "Pro" iPhone color option to use a lighter shade that is still saturated with color. Previous models have offered Midnight Green and Pacific Blue, which were dark tones, much more akin to the iPhone 13 Pro's Graphite and Gold shades. The first real-world images of the iPhone 13 Pro in Sierra Blue revealed a very unique metallic, almost icy look.
All of the Pro model iPhones achieve their highly polished finishes using a physical vapor deposition process that Apple first introduced last year on the iPhone 12 Pro, but Apple has now confirmed that Sierra Blue differs from all previous iPhone colors due to a manufacturing process that could explain why the company was able to offer a lighter blue to replace last year's Pacific Blue. Apple's press release for the iPhone 13 Pro and iPhone 13 Pro Max explained (emphasis our own):
The all-new Pro lineup features a premium flat-edge design, crafted with exceptional materials, including the surgical-grade stainless steel band, with an elegant finish that is resistant to abrasion and corrosion, and a textured matte glass back. Both models are available in four striking colors including the all-new sierra blue, created using multiple layers of nanometer-scale metallic ceramics applied across the surface for a stunning and durable finish.
Graphite, Gold, and Silver all make their return on the iPhone 13 Pro lineup, but Sierra Blue is a distinctive and eye-catching new color. With Sierra Blue being the only new shade to come to the Pro lineup of iPhones this year, some customers may be eager to get the new color due to it being instantly recognizable as the latest model. The knowledge that Sierra Blue is different at the nanometer scale may also serve as an interesting tidbit when selecting the color option.
Popular Stories
Since the iPhone X in 2017, all of Apple's highest-end iPhone models have featured either stainless steel or titanium frames, but it has now been rumored that this design decision will be coming to an end with the iPhone 17 Pro models later this year.
In a post on Chinese social media platform Weibo today, the account Instant Digital said that the iPhone 17 Pro models will have an aluminum...
Apple is continuing to refine and update iOS 26, and beta three features smaller changes than we saw in beta 2, plus further tweaks to the Liquid Glass design. Apple is gearing up for the next phase of beta testing, and the company has promised that a public beta is set to come out in July.
Transparency
In some apps like Apple Music, Podcasts, and the App Store, Apple has toned down the...
In select U.S. states, residents can add their driver's license or state ID to the Wallet app on the iPhone and Apple Watch, providing a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps.
Unfortunately, this feature continues to roll out very slowly since it was announced in 2021, with only nine U.S. states, Puerto Rico,...
Apple is expanding the ability to add an Apple Account Card to the Wallet app to more countries, according to backend Apple Pay changes.
With iOS 15.5, Apple updated the Wallet app to allow users to add an Apple Account Card, which displays the Apple credit balance associated with an Apple ID.
If you receive an Apple gift card, for example, it is added to an Apple Account that is also...
Apple will launch its new iPhone 17 series in two months, and the iPhone 17 Pro models are expected to get a new design for the rear casing and the camera area. But more significant changes to the lineup are not expected until next year, when the iPhone 18 models arrive.
If you're thinking of trading in your iPhone for this year's latest, consider the following features rumored to be coming...
Three out of four iPhone 17 models will feature more RAM than the equivalent iPhone 16 models, according to a new leak that aligns with previous rumors.
The all-new iPhone 17 Air, the iPhone 17 Pro, and the iPhone 17 Pro Max will each be equipped with 12GB of RAM, according to Fixed Focus Digital, an account with more than two million followers on Chinese social media platform Weibo. The...
Apple should unveil the iPhone 17 series in September, and there might be one bigger difference between the Pro and Pro Max models this year.
As always, the Pro Max model will be larger than the Pro model:iPhone 17 Pro: 6.3-inch display
iPhone 17 Pro Max: 6.9-inch displayGiven the Pro Max is physically larger than the Pro, it has more internal space, allowing for a larger battery and...
The calendar has turned to July, meaning that 2025 is now more than half over. And while the summer months are often quiet for Apple, the company still has more than a dozen products coming later this year, according to rumors.
Below, we have outlined at least 15 new Apple products that are expected to launch later this year, along with key rumored features for each.
iPhone 17 Series
iPho...