16-Inch MacBook Pro Features New 'Lid Angle Sensor'

Earlier this week, do-it-yourself repair website iFixit shared its full teardown of the new 16-inch MacBook Pro, providing a closer look at its scissor switch keyboard, new thermal architecture, and other design tweaks.

As it turns out, there is one more change. In an internal document to Apple Authorized Service Providers, obtained by MacRumors, Apple indicates the 16-inch MacBook Pro includes a new "lid angle sensor" that presumably monitors the opening and closing of the notebook and the precise position of the lid.

MacRumors reached out to iFixit to investigate, leading them to uncover a small sensor facing the left-side hinge of the notebook. There is also a magnet embedded in the hinge itself, with an arrow indicating polarity. iFixit has updated its teardown with photos of the sensor, which we've shared below.

ifixit 16 inch macbook pro lid angle sensor

Photo: iFixit

While previous-generation MacBook Pro models have a Hall effect sensor that determines when the lid is closed for sleep/wake purposes, the lid angle sensor in the 16-inch MacBook Pro appears to be more sophisticated.

Apple's service document does not provide any clues as to why the sensor was redesigned, but iFixit speculates that it could provide a clever way for Apple to track how often the lid was opened, closed, or adjusted in cases where the display or frayed flex cables need to be repaired — think "Flexgate."

ifixit 16 inch macbook pro lid angle sensor magnet

Photo: iFixit

The lid angle sensor could also be for an unannounced macOS feature, although again, this is merely speculation.

Of note, in the event of a display repair, Apple's service document indicates that technicians must calibrate both the display and the lid angle sensor in order for the repair to be considered complete. If we learn any additional information about the sensor, we will be sure to provide an update.

Related Roundup: MacBook Pro
Tag: iFixit
Buyer's Guide: MacBook Pro (Buy Now)
Related Forum: MacBook Pro

Popular Stories

AirPods Pro Firmware Feature

Apple Releases Firmware Updates for AirPods Pro 2 and AirPods 4

Monday November 11, 2024 11:28 am PST by
Apple today released firmware updates for both AirPods 4 models (version number 7B20) and the AirPods Pro 2 with both Lightning and USB-C charging cases (version number 7B21). All of these AirPods models were previously on firmware version 7B19. It is not immediately clear what new features or changes are included in firmware versions 7B20 and 7B21, but we will update this story if we find...
General Final Cut Pro Feature

Apple Likely to Announce Final Cut Pro Update This Week With These New Features

Sunday November 10, 2024 12:13 pm PST by
In its announcement video for the new Mac mini last month, Apple teased an "upcoming" version of Final Cut Pro for the Mac. Apple will likely announce the update during the annual Final Cut Pro Creative Summit, which begins this Wednesday. The conference is held in association with Apple, and attendees will be visiting Apple Park on the first day. Apple already teased four new features...
iphone 6 thickness

iPhone 17 'Air' May Not Be Much Thinner Than iPhone 6

Monday November 11, 2024 5:18 am PST by
Next year's iPhone 17 "Air" model may not be as thin as Apple planned, according to a rumor originating in Korea. According to the news aggregator account "yeux1122" on Naver, citing industry sources, Apple has run into problems making the new iPhone 17 model sufficiently thin. The device's reduced thickness is apparently dependent on manufacturing a battery with a thinner substrate, but...
new mac holiday

The Best Early Black Friday Mac Deals

Monday November 11, 2024 7:45 am PST by
Black Friday is getting closer, and prices on MacBook Pro, MacBook Air, iMac, and Mac mini computers have started to drop as the shopping holiday nears. These deals include the latest models of the M4 MacBook Pro and iMac. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site...
best buy holiday

Best Buy Reveals Black Friday Plans With Sitewide Sales Available Now

Friday November 8, 2024 10:05 am PST by
Black Friday sales are continuing today with Best Buy kicking off early Black Friday deals that will last for the next few days. Similar to other retailers, Best Buy's early Black Friday event includes sitewide savings on Apple products, headphones, TVs, monitors, video games, and more. Note: MacRumors is an affiliate partner with Best Buy. When you click a link and make a purchase, we may...
iOS 18 2 Share Item Location

Apple Announces iOS 18.2's New AirTag Location Sharing Feature Coming to These 15+ Airlines

Monday November 11, 2024 8:18 am PST by
Last week, we reported on a new feature in the Find My app on the iOS 18.2 beta that allows you to temporarily share an AirTag's location with a trusted person, and soon with airlines. Apple today announced the feature, providing more details. Apple said more than 15 airlines will offer the feature "in the coming months," including Delta, United, Air Canada, British Airways, Virgin Atlantic, ...
iOS 18

Here's Everything New in iOS 18.2 Beta 3

Monday November 11, 2024 4:53 pm PST by
Apple seeded the third betas of iOS 18.2 and iPadOS 18.2 to developers for testing today. While the third betas of each update are minor relative to the first two betas, there are still a handful of changes across the Photos app, TV app, and more. A corresponding iOS 18.2 public beta with these changes will likely be released later this week, and Apple previously confirmed that the software...
Next Generation CarPlay Porsche 1

Apple Continues to Prepare for Next-Generation CarPlay in iOS 18.2 Beta

Monday November 11, 2024 12:42 pm PST by
It has been nearly two and a half years since Apple first previewed next-generation CarPlay at WWDC 2022, and it has still yet to become available in any vehicles. Fortunately, though, Apple continues to work on the software system. Within the code for the third beta of iOS 18.2 seeded to developers today, there are redesigned "Climate" and "Media" app icons for next-generation CarPlay,...

Top Rated Comments

T'hain Esh Kelch Avatar
65 months ago
It may also, for future models, be used to help FaceID to determine the angle at which the face is likely at for quicker login.
Score: 28 Votes (Like | Disagree)
anschris Avatar
65 months ago
This is probably the "pervert privacy protection" feature. If it senses the lid closing super rapidly, it closes all browser windows and scrubs the hard drive of all your porn.
Score: 19 Votes (Like | Disagree)
bookofxero Avatar
65 months ago
My 2015 MBP has a magnetic sensor on the left side. My TI2 pen has magnets to hold the cap on. One day I placed my pen next to my laptop and the screen shut off because the magnet caused it to think the lid was closed.

My coworker has a 2018 MBP that does not respond to the pen. However, when he disconnects from his external monitors with his laptop screen up, his computer will completely lockup, as if it thinks the lid is closed. Opening it and closing it has no effect, and the trackpad goes completely dead (no haptic - just like my laptop when the pen is placed beside it).

My theory: I know other people with the same issue when disconnecting from hubs/docks. I guarantee more than a few have gone to the Genius Bar about this issue. This sensor is so the machine knows if the display is actually closed or not so it does not lock up for those and similarly-affected users.
Score: 9 Votes (Like | Disagree)
terraphantm Avatar
65 months ago
Might simply because they couldn't fit large enough magnets with the new smaller bezels.
Score: 5 Votes (Like | Disagree)
benshive Avatar
65 months ago
Interesting. Maybe a feature this sensor could be used for could be a setting where a user can set exactly how far closed they want the lid to be when the display turns off.
Score: 5 Votes (Like | Disagree)
Falhófnir Avatar
65 months ago
Wasn't there something about bouncing the sound from the speakers off the display to improve audio quality or am I imagining that? Either a patent or as part of the introduction of the 2016 or something, it's a bit of a vague memory.
Score: 4 Votes (Like | Disagree)