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iOS 18 Code Insider: A18 Chipset Integration Across the Entire iPhone 16 Lineup

Apple enthusiasts, buckle up! As we await the upcoming iOS 17 variants, the tech giant is already paving the way for its next big release – iOS 18. Expected to debut at WWDC 2024, with the public version following in September, iOS 18 brings exciting changes, especially for the iPhone 16 series.

iOS 18 Code Development Insights

MacRumors, our go-to source for Apple insights, has delved into the early development versions of iOS 18, revealing a potential shift in Apple’s strategy. Unlike previous models, the iPhone 16 series might break the tradition of utilizing year-old CPUs in non-Pro iPhone models.

  • D47 (iPhone 16)
  • D48 (iPhone 16 Plus)
  • D93 (iPhone 16 Pro)
  • D94 (iPhone 16 Pro Max)

“Crystal” Operating System and iPhone 16 Models

The internal dubbed “Crystal” operating system drops hints about four unannounced iPhone models. These models, closely aligning with the iPhone 16 series, include the iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max. But what about the long-rumored iPhone 16 Ultra?

A18 Chipset Details and Branding

The highlight of iOS 18’s code is the reference to a new System on Chip (SoC) – the t8140- Tihiti, Apple’s internal moniker for the A18 processor. Interestingly, all iPhone 16 models are set to feature this cutting-edge chipset, showcasing Apple’s commitment to performance.

Previous Model Variants and A17 Pro Processor

In the past, Apple divided the 15 and 15 Plus processors into A16 chipsets and A17 Pro chipsets for the 15 Pro and 15 Pro Max. Will the iPhone 16 series maintain this differentiation?

iPhone 16 Ultra Speculation and Device Identification

Surprisingly, the iPhone 16 Ultra is missing from the initial lineup, leaving room for speculation. Could the mysterious “D94a” or “D95” be the identification for this ultra-premium model, setting it apart from the rest?

Device Identification Insights and 5G Modem Testing

Apple’s device ID nomenclature takes center stage with the “D84S” designation for the iPhone 15 Pro Max. This variant, meant for in-house 5G modem testing, unveils Apple’s naming conventions.

Additional Hardware Features and Early Code Leaks

Beyond the A18 processor, iOS 18 hints at a Broadcom Wi-Fi and Bluetooth module for the iPhone 16 series. However, with the release months away, taking early code leaks with a grain of skepticism is crucial.

Potential Changes Before Release and Keeping You Updated

As the iPhone 16 series inches closer to its grand reveal, Apple may maintain a single processor family or surprise us with a different approach. Stay tuned as we track leaks and developments in the weeks to come.


In the fast-evolving world of Apple, iOS 18 promises exciting changes for the iPhone 16 series. From the powerful A18 chipset to potential surprises in the lineup, the anticipation builds. As we eagerly await the official release, one thing is sure – Apple is set to redefine the smartphone experience again.

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