iPhone 7 and 7 Plus Exhibiting 'Hissing' Noises Under Load for Some Users

After the iPhone 7 and iPhone 7 Plus began arriving to the first round of pre-order customers on Friday, a few users noticed what's become known as a "hissing" sound emanating from the back of the device, where the Apple logo is located. The first reports began on Friday, but the occurrence gained ground when 512 Pixels' Stephen Hackett tweeted about it, posting a video with the "terrible noises" produced by his iPhone clearly audible, which he determined to be caused by heavy performance at the time.


When he brought the issue to AppleCare, Hackett was told to bring the iPhone into an Apple retail location to swap it out, but given the low stock of nearly all iPhone 7 models, that solution isn't particularly helpful at the moment. Friday night, a member of the MacRumors forums, liorgr, confirmed the somewhat "common" issue facing the iPhone 7, although it's still unknown as to whether the noise could come from all versions of the device, or if it's just "a faulty batch."

I just came back from the Apple Store.

They had no idea what it is and what could it be (not surprising as this phones just came out today), so they ordered a replacement phone for me /:

They could reproduce the issue easily. Also I noticed that when turning on the phone you can hear it very well, I guess because of the extra processing that is being done while booting the device.

Kind of disappointed they don't have a few in stock for cases like this, but on the other hand it sounds like an issue more common than 1 damaged phone. so I hope that if it is a faulty batch or something like that so the wait my pay off and by the time I get my replacement phone it will be fixed.

Since his tweet, more and more iPhone 7 users have come forward about the issue and corroborated Hackett's story. On the MacRumors forums, mentions of a "buzzing" and "static" sound coming from the back of the iPhone 7 and iPhone 7 Plus began on Friday afternoon. Specifically, forum member maxlind noted that the noise happened on his 128GB iPhone 7 Plus under load, without charging or restoring from an iCloud backup.

My new iPhone 7 Plus (128GB, Black) has an odd buzzing / static sound coming from it. Specifically, if I put my ear up to the back of the phone where the apple logo is, I can hear the battery or processor or something “working”… note the sound file attached.

Nope, not charging. I thought maybe at first it was just the phone overworking itself during an iCloud restore (it got pretty hot too)... but the noise is still there.

One Redditor who got his iPhone 7 Plus replaced at an Apple store noticed immediately that his new iPhone was making a similar sound, so the issue could potentially be affecting a large number of iPhone 7 and iPhone 7 Plus models due to the high-capacity performance abilities of the A10 chip. Since there are no actual moving components on the chip, it's still unclear what could be making the noise.

As pointed out by The Verge, the consensus of the noise's origin online is that it's caused by a phenomenon known as "coil noise."

What’s going on here? Potentially nothing major, and Apple declined to comment on this story. So we can’t say for sure what the cause is yet, nor how widespread it is — though to the latter point, it doesn’t seem to be affecting a large number of users.

The consensus around the web right now is that this is some form of “coil noise” or “coil whine” — the sort of sound a high powered processor or virtually any electronic part can make, especially when it’s not properly dampened. It can crop up when the chip is under heavy load, and you might be able to hear it on any recent phone if you put it under load and listen very closely. I can, for example, hear some high-pitched noises on my Galaxy S7 Edge if I hold it up to my ear in a quiet room.

Still, despite the problem slowly becoming infamous over the weekend, some sites tried to replicate the issue and failed. Using performance benchmark software 3D Mark "Ice Storm Extreme," Engadget ended up hearing "no hissing at all" on the 4.7-inch iPhone 7. As many users have theorized, the sound issue could "stem from a manufacturing issue instead of an inherent design quirk." Until Apple addresses the problem, that still leaves affected users to either deal with the noise, or attempt to get a replacement that could potentially face the same sound.

Related Forum: iPhone

Popular Stories

iOS 18

Apple Expected to Release iOS 18.3 Next Week With These New Features

Thursday January 23, 2025 6:41 am PST by
iOS 18.3 should be released to the public next week, following beta testing since mid-December. While the software update is a relatively minor one, it still includes a handful of new features, changes, and bug fixes for iPhones. Below, we recap everything new in iOS 18.3. Notification Summary Changes Examples of inaccurate Apple Intelligence notification summaries Apple Intelligence...
iOS 18

5 New Things Your iPhone Can Do in iOS 18.3

Friday January 24, 2025 1:55 am PST by
Apple is set to release iOS 18.3 next week, bringing further refinements to Apple Intelligence features, a couple of neat new capabilities to iPhone 15 Pro and iPhone 16 devices, and bug fixes. While not quite as packed with new features as Apple's preceding iOS 18 point releases, iOS 18.3 still introduces capabilities that aim to make your iPhone smarter and more intuitive. Below, we've...
Generic iOS 18

iOS 18.4 Beta Coming Soon With These New Features for Your iPhone

Friday January 24, 2025 8:16 am PST by
iOS 18.3 is expected to be widely released next week, and that means the first iOS 18.4 beta for iPhones should be just around the corner. Apple has previously implied that iOS 18.4 will be released in April, as that is when it promised to make Apple Intelligence available in even more languages. Below, we outline what to expect from iOS 18.4 so far. Apple Intelligence for Siri Siri ...
Apple Pay Walmart Feature

Walmart Stands Firm on Why It Doesn't Accept Apple Pay in the U.S.

Thursday January 23, 2025 7:32 am PST by
Walmart still does not accept Apple Pay or other NFC payments at its more than 4,600 stores across the U.S., and it stood firm on its reasoning for that today. A spokesperson for Walmart today informed MacRumors that its position on contactless payments has not changed since we last reached out about the matter in 2022. The big-box retailer said it remains focused on its own convenient...
apple tv 4k new orange

New Apple TV Launching This Year With These New Features

Wednesday January 22, 2025 6:01 pm PST by
A new Apple TV is expected to be released later this year. In this article, we recap rumored features and changes for the device. The next Apple TV will be equipped with Apple's own combined Wi-Fi and Bluetooth chip, according to Bloomberg's Mark Gurman. He said the chip supports Wi-Fi 6E, which would be an upgrade over the current Apple TV's standard Wi-Fi 6 support. Wi-Fi 6E extends the...
iOS 18

Here Are Apple's Full Release Notes for iOS 18.3

Tuesday January 21, 2025 4:31 pm PST by
Apple provided developers and public beta testers with the release candidate version of iOS 18.3 today, and with it comes release notes confirming what's new. While we knew about several of the features that are in the update, there are some lesser known tweaks and bug fixes. The update adds new Visual Intelligence features for iPhone 16 models, it tweaks Notification summaries on all...
iPhone 17 Pro Dual Tone Horizontal Single Feature

Kuo: iPhone 17 Models Won't Have Smaller Dynamic Island

Friday January 24, 2025 9:09 am PST by
The upcoming iPhone 17 models that Apple plans to release this year will not feature a smaller Dynamic Island, Apple analyst Ming-Chi Kuo said today. On social media, he said that he is expecting the size of the Dynamic Island to remain "largely unchanged" across the iPhone 17 lineup. His statement is contrary to prior rumors that we've heard about planned changes for the iPhone 17 models. ...
iPhone 16 Apple Store Levels

Gurman: Apple Stores Receiving 'Merchandise' Updates Next Week

Saturday January 25, 2025 5:07 pm PST by
Apple's retail stores will be rolling out "merchandise/floor marketing updates" next week, according to Bloomberg's Mark Gurman. Gurman did not explicitly say if the store updates are related to any upcoming product announcements, but he did mention that next week is around the time that Apple rolls out its annual Black Unity watch band for the Apple Watch. In each of the past four years, ...
apple power beats pro 2

Apple's First Product Announcement of 2025 is Imminent

Thursday January 23, 2025 2:48 pm PST by
It's also time for Apple's first product announcement of the year. Last year, Apple said it would be launching Powerbeats Pro 2 in 2025, and the wireless earbuds are expected to launch very soon. Powerbeats Pro 2 images found in iOS 18 code In his Power On newsletter last weekend, Bloomberg's Mark Gurman said the Powerbeats Pro 2 are "due imminently." In addition to Apple filing the...

Top Rated Comments

Beachguy Avatar
109 months ago
Easy fix. Settings>Sounds>SnakeSound needs to be set to "off."
Score: 74 Votes (Like | Disagree)
Royksöpp Avatar
109 months ago
This new iPhone is causing quite a buzz!
Score: 42 Votes (Like | Disagree)
Icaras Avatar
109 months ago
#hissgate
Score: 25 Votes (Like | Disagree)
rudychidiac Avatar
109 months ago
I have a theory, the iPhone 7 is the true Slytherin heir...

first "iPhone 7" is a very unusual name for a phone, what does the number 7 remind you of? Horcruxes of course! Voldemort split his soul to seven pieces!

Second, apparently people (or muggles) are hearing "hiss" sounds, guys this is the iPhone speaking in parseltongue, calling its master...

Third, the iPhone 7 and 7 Plus come in two new colors, what are the colors? Black and jet black! And voldemort always wears a black robe...

And lastly, The only new stock wallpaper in iOS 10 is a green waterfall, green is for slytherin.

Apple is slytherin, and the iPhone 7 is the slytherin heir.


Edit: OH AND ALSO, The apple, in the old testament was a tool the devil (THE SNAKE) used to lure eve into the sin! Apple! snake! Are you getting it???
Score: 22 Votes (Like | Disagree)
kycophpd Avatar
109 months ago
But did it blow up???
Score: 17 Votes (Like | Disagree)
spiderman0616 Avatar
109 months ago
Or people could just stop trying to find problems with things and create iGates out of them. Do people seriously have nothing better to do with their time?
Score: 15 Votes (Like | Disagree)