Early iOS 18 Code Reveals Four New iPhone Models With A18 Chip

While iOS 17 updates continue to roll out periodically, work is well underway on the next major version, iOS 18, due to be released in beta in June and to the public in September, based on past patterns. Through our sources, MacRumors has received information on early development versions of ‌iOS 18‌ and the hardware referenced in the code.

iPhone 16 To Skip A17 Feature
The operating system, codenamed "Crystal," contains references to four unreleased iPhone models, which aligns with existing information on the iPhone 16 line up. The models referenced are:

  • D47 – ‌iPhone 16‌
  • D48 – ‌iPhone 16‌ Plus
  • D93 – iPhone 16 Pro
  • D94 – ‌iPhone 16 Pro‌ Max

In contrast to previous rumors, we have so far found no evidence of an alleged "iPhone Ultra" as part of the ‌iPhone 16‌ range. While it is theoretically possible that an additional model could fall under the "D94" device identifier, such a device would more than likely use a separate identifier (D95 or D94a) to clearly differentiate it from the hardware of other configurations.

For the iPhone 15 Pro Max, Apple developed an alternate version with the device identifier "D84S" for use in proprietary 5G modem testing. The "S" in "D84S" likely stood for "Sinope," the project codename for Apple's in-house 5G modem. Although this device was never released to the general public, it provides insight into Apple's nomenclature in terms of device identifiers.

Code from the operating system also indicates that the entire ‌iPhone 16‌ range will use a new system-on-chip – t8140 – Tahiti, which is what Apple calls the A18 chip internally. The A18 chip is referenced in relation to the base model ‌iPhone 16‌ and 16 Plus (known collectively as D4y within Apple) as well as the ‌iPhone 16 Pro‌ and 16 Pro Max (referred to as D9x internally).

This aligns with a previous rumor concerning the ‌iPhone 16‌ range, and represents a notable change from Apple's previous releases. In the iPhone 15 lineup, the base model ‌iPhone 15‌ uses the older A16 chip from the iPhone 14 Pro, while the top-of-the-range ‌iPhone 15 Pro‌ features an all-new A17 Pro chip with an additional GPU core and increased clock speed, and it is built on a more efficient 3nm platform compared to the A16.

The ‌iPhone 16‌ range will, however, apparently feature the same general chip on both base model and Pro iPhones. While the operating system indicates the use of the same t8140 chip for the entire ‌iPhone 16‌ range, Apple may opt to differentiate the chips used on different tiers of iPhones, such as by using A18 and A18 Pro branding.

In addition to the A18 chip, the operating system contains references to a Broadcom Wi-Fi and Bluetooth module seemingly planned for the ‌iPhone 16‌ range, but beyond this it does not contain any further details. While the operating system contains codenames related to different hardware components, there is no additional information of note, as the operating system is seemingly too early in development to contain any noteworthy changes compared to ‌iOS 17‌.

For additional details on what to expect, check out our dedicated rumor roundup pages for iPhone 16 and iPhone 16 Pro.

Related Roundups: iOS 18, iPhone 16, iPhone 16 Pro
Tags: A18, iOS 18

Top Rated Comments

Avenged110 Avatar
18 weeks ago
I’d really rather have an iPhone 16 minus. Smaller – ‘mini,’ if you will, and less camera nonsense.
Score: 11 Votes (Like | Disagree)
tipoo Avatar
18 weeks ago
An Apple research paper on making better LLMs for iPhone may point to 10GB, particularly with the 16 Pro rumored to be heavily AI focused


Score: 7 Votes (Like | Disagree)
Mac mini power user Avatar
18 weeks ago
If this is true, then it does confirm that the decision to use the A15 in the iPhone 14 and 14 Plus, and the A16 in the iPhone 15 and 15 Plus was at least partially due to production issues. The A18 will almost certainly use the enhanced N3E node.
Score: 6 Votes (Like | Disagree)
cwwilson Avatar
18 weeks ago
So no more hand-me-down chips for the non-Pro lineup?
Score: 6 Votes (Like | Disagree)
currentinterest Avatar
18 weeks ago
We will likely see A18 and an A18 Pro SoC.
Score: 4 Votes (Like | Disagree)
progx Avatar
18 weeks ago
TMSC was having trouble getting Apple the chips they needed during the pandemic. Apple usually plans things 2-3 years in advance, so I’m not surprised they put the non-Pro iPhones back to the entry chips.
Score: 3 Votes (Like | Disagree)

Popular Stories

iPhone 15 Pro FineWoven

Apple Reportedly Stops Production of FineWoven Accessories

Sunday April 21, 2024 6:03 am PDT by
Apple has stopped production of FineWoven accessories, according to the Apple leaker and prototype collector known as "Kosutami." In a post on X (formerly Twitter), Kosutami explained that Apple has stopped production of FineWoven accessories due to its poor durability. The company may move to another non-leather material for its premium accessories in the future. Kosutami has revealed...
Provenance Emulator

PlayStation and SEGA Emulator for iPhone and Apple TV Coming to App Store [Updated]

Friday April 19, 2024 8:29 am PDT by
The lead developer of the multi-emulator app Provenance has told iMore that his team is working towards releasing the app on the App Store, but he did not provide a timeframe. Provenance is a frontend for many existing emulators, and it would allow iPhone and Apple TV users to emulate games released for a wide variety of classic game consoles, including the original PlayStation, GameCube, Wii,...
iOS 17 All New Features Thumb

iOS 17.5 Will Add These New Features to Your iPhone

Sunday April 21, 2024 3:00 am PDT by
The upcoming iOS 17.5 update for the iPhone includes only a few new user-facing features, but hidden code changes reveal some additional possibilities. Below, we have recapped everything new in the iOS 17.5 and iPadOS 17.5 beta so far. Web Distribution Starting with the second beta of iOS 17.5, eligible developers are able to distribute their iOS apps to iPhone users located in the EU...
top stories 20apr2024

Top Stories: Nintendo Emulators on App Store, Two New iOS 17 Features, and More

Saturday April 20, 2024 6:00 am PDT by
It was a big week for retro gaming fans, as iPhone users are starting to reap the rewards of Apple's recent change to allow retro game emulators on the App Store. This week also saw a new iOS 17.5 beta that will support web-based app distribution in the EU, the debut of the first hotels to allow for direct AirPlay streaming to room TVs, a fresh rumor about the impending iPad Air update, and...
apple vision pro orange

Apple Vision Pro Customer Interest Dying Down at Some Retail Stores

Monday April 22, 2024 2:12 am PDT by
Apple Vision Pro, Apple's $3,500 spatial computing device, appears to be following a pattern familiar to the AR/VR headset industry – initial enthusiasm giving way to a significant dip in sustained interest and usage. Since its debut in the U.S. in February 2024, excitement for the Apple Vision Pro has noticeably cooled, according to Bloomberg's Mark Gurman. Writing in his latest Power On...