New Charging Sound Discovered in iOS 11, Perhaps for iPhone 8 Inductive Wireless Charging Functionality

Buried in iOS 11, there seems to be a new sound file that could potentially be implemented when the rumored "iPhone 8" is released with inductive wireless charging capabilities. Highlighted on YouTube, the sound file is called "engage_power.caf," and it is distinct from the existing "connect_power.caf" sound file that's used whenever an iPhone is connected to a Lightning cable.

In the video below, the unused charging sound is compared to the existing charging sound in iOS 11. The new audio file provides a longer, more distinct sound that could perhaps be used to assure iPhone users that their devices are properly charging should the iPhone 8 indeed include an inductive-based wireless charging function as has been rumored.


While both the name of the file and the sound seem to indicate that it is related to some kind of charging purpose, there's no way to confirm why the sound has been added, so this is all pure speculation at this point.

In fact, there are several other sound files in iOS 10 and 11 that are unused and do not have a purpose, so it's not entirely clear if the new charging sound will actually be added to the iOS 11 operating system or what it will be used for. The hidden sound file in iOS 11 is not accessible on a device running iOS 11 and must be accessed using a computer.

Wireless charging is expected to be included in the radically redesigned "iPhone 8" coming in the fall of 2017, and perhaps its two companion devices (presumably the iPhone 7s and the iPhone 7s Plus), but there's still some question about the form the wireless charging functionality will take.

Early 2017 iPhone rumors suggested Apple was aiming to implement long-range wireless charging, perhaps through a partnership with a company like Energous, but that technology may not be advanced enough to be used in the iPhone. Long-range wireless charging continues to suffer from problems like object interference and much slower charging rates as the distance between the receiver and the transmitter increases.

Apple is no doubt working on long-range wireless charging, but recent information suggests a simpler solution will be added to the iPhone 8 - inductive charging. An inductive charging solution, which is what's used for the Apple Watch, would require the iPhone to attach to some kind of charging puck, mat, dock, or other device. It would perhaps be simpler than a Lightning port, but it isn't a full wire-free contactless solution.

Apple Watch MagSafe Inductive Charger
Regardless of how wireless charging is implemented, there's overwhelming evidence that this is a technology Apple is aggressively pursuing. Apple joined the Wireless Power Consortium in February, hired dozens of employees with expertise in wireless charging, and has sourced wireless charging components from a range of manufacturers including Lite-On Semiconductor, MediaTek, and Luxshare.

Top Rated Comments

sunapple Avatar
65 months ago
The sound of your money being sucked out of your wallet.
Score: 39 Votes (Like | Disagree)
keysofanxiety Avatar
65 months ago
It's ridiculous how a silly little noise buried in an operating system can make anybody so excited.

That said, this silly little noise has made me super excited. :oops:
Score: 31 Votes (Like | Disagree)
LordQ Avatar
65 months ago
Why am I excited for a 2 seconds sound clip? :D
Score: 20 Votes (Like | Disagree)
bigjnyc Avatar
65 months ago
I like it, sounds futuristic
Score: 12 Votes (Like | Disagree)
newyorksole Avatar
65 months ago
Love little leaks like these. These next few months are going to be exciting.
Score: 11 Votes (Like | Disagree)
redheeler Avatar
65 months ago
At this point iPhone 8 looks very promising. Apple is late with wireless charging, so I'm hoping that means it will be refined and better than the competing solutions. Only time will tell if that is the case.
Score: 10 Votes (Like | Disagree)

Popular Stories

2022 back to school apple

Apple Launches 2022 Back to School Offer: Up to $150 Gift Card With Mac or iPad

Friday June 24, 2022 5:08 am PDT by
Apple today launched its annual "Back to School" promotion for college/university students in the United States and Canada. This year's promotion offers a free Apple gift card with the purchase of an eligible Mac or iPad, rather than free AirPods like last year. Apple is also offering students 20% off AppleCare+ plans during the promotion. Apple is offering a $150 gift card with the purchase ...
airpods pro 2 1

AirPods Pro 2 Said to Feature Upgraded H1 Chip, Find My, Heart Rate Detection, USB-C and More

Friday June 24, 2022 9:48 am PDT by
The next-generation AirPods Pro could come with a long list of new features that include heart rate detection, the ability to function as a hearing aid, and a USB-C port according to a report from 52Audio. The site claims that it has received new information on the AirPods Pro 2, and it has used that information to provide some renders on what the earbuds might look like. Design wise, there...
m2 mac mini screen feature

Gurman: Apple Planning M2 Pro Mac Mini, New Apple TV With A14 Chip, Revamped HomePod With S8 Chip, and More

Sunday June 26, 2022 6:31 am PDT by
In the latest edition of his Power On newsletter for Bloomberg, Mark Gurman outlined additional M2 Macs on Apple's product roadmap, including new Mac mini models with M2 and M2 Pro chips, new 14-inch and 16-inch MacBook Pro models with M2 Pro and M2 Max chips, and a new Mac Pro tower with M2 Ultra and "M2 Extreme" chips. Following the M2 series of Macs, Gurman said the first M3 series of...
apple ar headset concept 1

Apple Rumored to Announce 'Game-Changer' AR/VR Headset in January 2023

Friday June 24, 2022 2:52 am PDT by
Apple is "likely" to announce its long-rumored mixed-reality headset as soon as January 2023, Apple analyst Ming-Chi Kuo has reiterated. Concept render based on purported leaked information by Ian Zelbo In a detailed post on Medium, Kuo explained that Apple's headset will be a "game-changer" for the augmented-reality and virtual-reality market. Describing some of the headset's...
widgets ios 16 feature

Gurman: iPhone 14 Pro to Feature Always-On Display Showing iOS 16's New Lock Screen Widgets

Sunday June 26, 2022 7:36 am PDT by
iPhone 14 Pro models are widely expected to feature always-on displays that allow users to view glanceable information without having to tap to wake the screen. In the latest edition of his Power On newsletter for Bloomberg, Mark Gurman said the feature will include support for iOS 16's new Lock screen widgets for weather, fitness, and more. "Like the Apple Watch, the iPhone 14 Pro will be...