iFixit's iPhone 5s Teardown Reveals Touch ID Fingerprint Sensor, 'Invisible' M7 Chip

iFixit has already taken apart the new iPhone 5s, currently on sale in Australia. It is the second significant teardown of the device, which was taken apart earlier by Australian iPhone repair firm iExperts. Unsurprisingly, there are no drastic changes from the iPhone 5 to the 5s, but there are some new internals like the Touch ID sensor that are worth examining.

ifixitiphone5s
In removing the front panel from the rest of the iPhone 5s, the iFixit team notes that a new cable that runs from the Touch ID sensor to the Lightning port assembly, meaning that extreme care must be taken when removing the screen to avoid damaging the cable.

iFixit did express some concern over the amount of glue used to attach the battery -- a 3.8V - 5.92Wh - 1560mAh unit, slightly larger than the iPhone 5's 3.8V 1440mAh battery -- to the casing, noting that the dramatic increase in glue compared to the iPhone 5 could make it exceptionally difficult to replace the battery. The company also wondered if the sapphire home button was enough to protect the sensitive CMOS Touch ID sensor over time.

touchidcable
Looking at the logic board, iFixit could not find a standalone M7 motion coprocessor chip, dubbing it "invisible". The team believes the M7 may be special silicon built into the A7 chip itself.

Also of note was the striking lack of a discrete M7 co-processor. Perhaps the "M" stands for "magical," because it’s not there, folks. The mythical M7 is most likely a combination of motion-oriented components, and not an actual dedicated chip (as Apple implied during last week’s product announcement). Chock it up to savvy marketing.

Apple's iterative design has allowed it to streamline and optimize internal construction of the 5s, including the loss of extemporaneous antenna interconnect cables "leaving one less thing to break or get disconnected".

Overall, iFixit gave the iPhone 5s a repairability score of 6 out of 10 (10 being the easiest to repair), which is one point fewer than the iPhone 5's 7 out of 10. Compared to the iPhone 5, the 5s battery no longer has a convenient pull tab for removal and the Touch ID cable could be ripped out of its socket during front panel removal.

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 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

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...
macOS Tahoe 26 Thumb

Apple Releases macOS Tahoe 26.2 With Edge Light

Friday December 12, 2025 10:08 am PST by
Apple today released macOS Tahoe 26.2, the second major update to the macOS Tahoe operating system that came out in September. macOS Tahoe 26.2 comes five weeks after Apple released macOS Tahoe 26.1. Mac users can download the macOS Tahoe update by using the Software Update section of System Settings. macOS Tahoe 26.2 includes Edge Light, a feature that illuminates your face with soft...
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...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 2 and AirPods Pro 3

Thursday December 11, 2025 11:28 am PST by
Apple today released new firmware designed for the AirPods Pro 3 and the prior-generation AirPods Pro 2. The AirPods Pro 3 firmware is 8B30, up from 8B25, while the AirPods Pro 2 firmware is 8B28, up from 8B21. There's no word on what's include in the updated firmware, but the AirPods Pro 2 and AirPods Pro 3 are getting expanded support for Live Translation in the European Union in iOS...
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

hayden1250 Avatar
160 months ago
Of course they rip open the hardest colour to find....
Score: 16 Votes (Like | Disagree)
SkyBell Avatar
160 months ago
But iFixit is really obsessed with its hobbyist's view.
You ever taken a look at their name? "iFixIt"? ;)

I can't tell you how many times their repair guides have saved me, my Macs and my wallet.
Score: 10 Votes (Like | Disagree)
croooow Avatar
160 months ago
All good stuff, more to come.

Insightful! :rolleyes:
Score: 7 Votes (Like | Disagree)
Prof. Avatar
160 months ago
So this is where all the Gold iPhones are going... :rolleyes:

:p
Score: 6 Votes (Like | Disagree)
RyanKohl Avatar
160 months ago
I just assumed that the M7 was built into the A7.
Score: 5 Votes (Like | Disagree)
chrmjenkins Avatar
160 months ago
are you an electrical engineer? nope. so you really don't have any idea why electronics companies glue components to their chassis...do some research. go talk to some hardware guys are your local university.

it's not a silly conspiracy.

The mechanical engineer would be the one to decide if the battery is glued or not.

source: I'm an EE. ;)

edit: Chipworks found the M7:

https://twitter.com/Chipworks/status/381101965767213057

Score: 4 Votes (Like | Disagree)