Photos of iPhone 4S/5 Logic Board Suggest A5 Processor

A site by the name of AppleLeaks today posted photos of what is claimed to be the logic board from a next-generation iPhone model. The report is unsure about whether the board is from an upgraded iPhone 5 model or a cheaper "iPhone 4S" model Apple is also said to be planning to launch, but the images do add more detail to the picture that is beginning to come together.

iphone 4s 5 logic board
Comparing the pictures to the ones of the logic boards for the CDMA and GSM iPhone 4 models as seen in teardowns by iFixit (see steps 13 and 14), it is interesting to note that this new logic board carries a form factor more similar to that of the CDMA iPhone 4 but with a SIM-card slot also squeezed onto the board. That inclusion of the SIM-card slot on the new logic board has resulted in a reshuffling of the chip locations on the front of the board, while the back side remains quite similar to the CDMA iPhone 4 logic board.

iphone 4 cdma gsm logic board
Front of CDMA (top) and GSM (bottom) iPhone 4 logic boards (Source: iFixit)

Notably, the relatively large area on the front of the logic board designed to house the main processor for the device is rectangular in nature on the new board, suggesting that it is designed for the rectangular A5 system-on-a-chip found in the iPad 2 rather than the square A4 chip found in the iPhone 4 and original iPad. Apple is of course expected to use the A5 in the iPhone 5, but there has been some question as to whether Apple would step up to the A5 for its cheaper iPhone 4S model or continue to use the A4 in order to hold costs down.

The iPhone 5 is expected to be a "world-mode" phone capable of running on both GSM and CDMA networks. The presence of a SIM-card slot on the new logic board does indeed confirm GSM compatibility for this device, whether it be an iPhone 5 or 4S, and CDMA compatibility would come from the inclusion of a specific chip supporting the dual standards. Such a chip from Qualcomm is already used on the CDMA iPhone 4, but accommodation for a similar chip on this new logic board can not be confirmed given that the board is unlabeled.

One of the more prominent differences in the actual logic board form factor between the GSM and CDMA iPhone 4 is a semicircular cutout at the bottom of the board. That cutout fits around the new circular vibrator used in the CDMA version, a change from the vibrator used in the GSM version. The presence of the cutout on this new logic board suggests that Apple will continue to use the circular vibrator found in the CDMA iPhone 4.

AppleLeaks also posts of the battery for the iPhone4S/5, in line with photos from other sources seen several times earlier this week.

Related Forum: iPhone

Popular Stories

iOS 26

iOS 26.4 and iOS 27 Features Revealed in New Leak

Friday December 12, 2025 10:56 am PST by
Macworld's Filipe Espósito today revealed a handful of features that Apple is allegedly planning for iOS 26.4, iOS 27, and even iOS 28. The report said the features are referenced within the code for a leaked internal build of iOS 26 that is not meant to be seen by the public. However, it appears that Espósito and/or his sources managed to gain access to it, providing us with a sneak peek...
apple beta 26 lineup

Apple Leak Confirms Work on Foldable iPhone, AirTag 2, and Dozens More Devices

Monday December 15, 2025 2:05 pm PST by
Last week, details about unreleased Apple devices and future iOS features were shared by Macworld. This week, we learned where the information came from, plus we have more findings from the leak. As it turns out, an Apple prototype device running an early build of iOS 26 was sold, and the person who bought it shared the software. The OS has a version number of 23A5234w, and the first...
Apple Logo Top Half

Early iOS 26 Software Leak Uncovers Dozens of Upcoming Apple Features

Monday December 15, 2025 3:05 pm PST by
Software from an iPhone prototype running an early build of iOS 26 leaked last week, giving us a glimpse at future Apple devices and iOS features. We recapped device codenames in our prior article, and now we have a list of some of the most notable feature flags that were found in the software code. In some cases, it's obvious what the feature flags are referring to, while some are more...
Apple Foldable Thumb

Leak Reveals Foldable iPhone Details

Monday December 15, 2025 9:09 am PST by
The first foldable iPhone will feature a series of design and hardware firsts for Apple, according to details shared by the Weibo leaker known as Digital Chat Station. According to a new post, via machine translation, Apple is developing what the leaker describes as a "wide foldable" device, a term used to refer to a horizontally oriented, book-style foldable with a large internal display....
iOS 26

iOS 26.3 Beta 1 Features: What's New So Far

Monday December 15, 2025 4:23 pm PST by
Apple is testing iOS 26.3, the next version of iOS 26 that will launch around January. Since iOS 26.3's testing is happening over the holidays, it is a smaller update with fewer features than we've seen in prior betas. We've rounded up what's new so far, and we'll add to our list with subsequent betas if we come across any other features. Transfer to Android Apple is making it simpler...
iOS 26

Apple Releases iOS 26.2 With Alarms for Reminders, Lock Screen Changes, Enhanced Safety Alerts and More

Friday December 12, 2025 10:10 am PST by
Apple today released iOS 26.2, the second major update to the iOS 26 operating system that came out in September, iOS 26.2 comes a little over a month after iOS 26.1 launched. ‌iOS 26‌.2 is compatible with the ‌iPhone‌ 11 series and later, as well as the second-generation ‌iPhone‌ SE. The new software can be downloaded on eligible iPhones over-the-air by going to Settings >...
iOS 26

iOS 26.2 Coming Soon With These 8 New Features on Your iPhone

Thursday December 11, 2025 8:49 am PST by
Apple seeded the second iOS 26.2 Release Candidate to developers earlier this week, meaning the update will be released to the general public very soon. Apple confirmed iOS 26.2 would be released in December, but it did not provide a specific date. We expect the update to be released by early next week. iOS 26.2 includes a handful of new features and changes on the iPhone, such as a new...
airpods max 2024 colors

AirPods Max 2 Likely to Offer These 10 New Features

Monday December 15, 2025 7:41 am PST by
Apple released the AirPods Max on December 15, 2020, meaning the over-ear headphones launched five years ago today. While the AirPods Max were updated with a USB-C port and new color options last year, followed by support for lossless audio and ultra-low latency audio this year, the headphones lack some of the features that have been introduced for newer generations of the regular AirPods and the ...

Top Rated Comments

chrmjenkins Avatar
187 months ago
The iPhone 4 was left in a bar. Apparently the iPhone 5 was left in a Mafia run Italian restaurant, cause they're sending it out in pieces. Capisce?
Score: 15 Votes (Like | Disagree)
DrJohnnyN Avatar
187 months ago
Aren't most vibrators kind of circular?


Depends on what kind of vibrator you're talking about.
Score: 8 Votes (Like | Disagree)
WestonHarvey1 Avatar
187 months ago
My wife will love the dual core A5 chipset.
Score: 7 Votes (Like | Disagree)
mrgraff Avatar
187 months ago
Aren't most vibrators kind of circular?
I believe the word is "cylindrical." :D
Score: 5 Votes (Like | Disagree)
DrJohnnyN Avatar
187 months ago
I posted these pics on MR first.

You're welcome, Arn. :-)
Score: 5 Votes (Like | Disagree)
Nicky G Avatar
187 months ago
Aren't most vibrators kind of circular?
Score: 4 Votes (Like | Disagree)