Some iPhone 7 & 7 Plus owners report an odd ‘hissing’ noise when the CPU is pegged out

By , Sep 17, 2016

A10 Fusion chip

Only one day after the official launch date of the new iPhone 7 and iPhone 7 Plus handsets, users are already reporting problems.

The latest comes from those who are putting heavy loads on the new A10 Fusion CPU, which reportedly causes the handset to exhibit a strange hissing noise.

The new A10 Fusion chip is a quad-core processor that contains two high-power cores and two low-power cores, which allow it to be a battery-friendly chip when it needs to be, but very robust when you need the performance.

Despite these capabilities, it seems it’s not without its issues.

A new report from 9to5Mac has surfaced describing something called “HissGate,” in which after putting a lot of strain on the CPU, such as during software restores or hardcore processing, a painful-sounding hissing noise can be heard coming from the location of the processor in the device.

After being publicized, confirmation of such issues are now popping up all over the internet from other users as well.

Curious to know what it sounds like? The video below lets you hear the sound:

Obviously, this doesn’t sound all-too appealing. In fact, it almost sounds faulty. Such sounds are not typically heard from smartphones when they’re being used.

One user reluctantly contacted AppleCare about the issue with his brand new device and their response was that it needed to be replaced. Unfortunately, the high demand for the new iPhone means no replacement units are currently in stock, so he was given a 5-7 day ETA on a new unit.


Following his Tweets, other iPhone 7 and iPhone 7 Plus users jumped aboard to report they were having similar issues, suggesting that this is more widespread than just a single defective device.

Another video, uploaded by @DetroitBORG demonstrates the hissing sound as well:

Has Apple shipped millions of possibly defective handsets right off of the factory line? It’s possible, but many customers haven’t even received their units yet due to the overwhelming demand, so many Apple customers will now be waiting to see if “HissGate” is going to be affecting them.

Apple has not yet made any public statement or recall regarding the abnormal hissing sound.

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  • Joaquim N.

    What the actual f*ck? It’s like a bomb about to explode! Hahaha

    • iNeedANameHere

      Here at Apple we strive to innovate years beyond our competitors. That’s why on iPhone 7 we’ve refined the experience to be far superior than that of the Note 7. You can now use your phone with only a mild inconvenience of noise instead of simply buring your jeep or Home to the ground.

    • Bill

      Bombs don’t hiss. Source: am bomb tech.

    • Tamahome5555

      iPhone 7 is like the bomb that is about to explode. While Note 7 is the exploded edition of iPhone 7

  • TornBodies

    If this is true i wonder what apples response will be. You’re using it wrong
    we put a fusion chip in your phone, but u shouldn’t be maxing it out.

    • The King

      You’re working it the wrong way.

    • Jon20

      I guess it takes “COURAGE” to use the iPhone 7.

      • Agneev Mukherjee

        Yeah, real “courage“.

  • rockdude094

    Maybe its doing what its suppose to do… a “fusion” reaction

  • techfreak23

    Jesus Apple. You have a chance to destroy Samsung with this whole “BatteryGate” issue on the Note 7 and this happens… SMDH. Hopefully mine doesn’t have this issue because I stress the hell out of my phone constantly.

    • Seriously, its just a sound… you know like the sound(rattle) ALL smart phones camera make if you shake the phone and listen closely. I doubt any harm is coming from the CPU making noise. Even the Touch ID makes a noise when its working..

      • techfreak23

        Yes, the phones make sounds, but usually not loud enough to be heard unless you’re in a quiet room with the phone right on your ear. This seems to be more than that…

      • Seems?have you heard it youself of just basing it off of the recording, if thats thT case you don’t know how close the mic was or if the sound was amplified…

      • techfreak23

        Yes, it seems that way because I won’t have my phone for another 2 days, so all I have to go on is the video.

      • All im saying is so what if it makes a little sound when its working hard. Its a lot of power in a small chip. As lon as its not a loud speaker truck or train horn don’t even pay attention to it lol.. I doubt any harm will come from hearing your processor work.

      • eXoguti097

        You shouldn’t have to ignore it. It’s probably not supposed to make any sound and it has to be investigated. It’s only been a day, no one truly knows if it’s nothing or an actual issue that could cause damage.

      • Sounds happen.. like road noise from tires..lile I stated above. The cameras rattle. You can hear Touch ID clicking or whatever when you use it.. when trees fall and no ones around they make sounds too

      • techfreak23

        There shouldn’t be any sounds as there have not been any sounds in previous models that you cannot hear unless in the conditions I stated above. It’s not like the phones have a fan system that kick in when the processor is running hot. The point is that, based off of these early reports, it seems like every phone is not making this sound under similar conditions.

        That being said, it’s only been a day, so let’s wait and see before making any judgments. Honestly, it’s probably just the blog sites that want another “-gate” fiasco like the last few iPhone releases (they’re already calling it “HissGate…”) smdh

      • These are new processors, of course old generations would,t make the same sounds, They all had there quirks. Its just life, If it wasn’t a noise it’d be something else..

      • smtp25

        Just no.

      • Jerry

        You’re an idiot

      • Elaborate.

      • smtp25

        If you truly believe it then maybe iSheep do exist..

      • Believe what?

      • smtp25

        seriously wtf? yes tyre make noise when they contact the ground thats a given. My top of the line premium phone shouldn’t be making noises except out of the speakers or ok the taptic feedback engine

      • Sure just over look the chip of Touch ID making noise as it processes the fingerprint.. It’s the same thing and they say it happens when its ‘pegged out’..

      • techfreak23

        I am very aware the Touch ID sensor makes noise. The only time I was able to hear it was when I had my 5s plugged into an aux cable with nothing playing (in my previously stated emvironmental conditions).

        Like I said, I’m sure this is just people and blogs overreacting after the first day. Apple will more than likely release a statement if the issue is as widespread as it’s being made out to be after the first day (if it’s even an issue to begin with).

        Edit: it might even have to do with the fact that the A10 is clocked at the highest speed that Apple has ever done with their mobile CPUs.

      • You can hear Touch ID just by putting it to your ear. Attempt to unlock your phone with a finger that isn’t saved. Its chip will make sounds as its processing it.. sure its not loud as the new claim but still

      • smtp25

        Because I’m paying NZD$1680 for a 7plus128GB and I don’t want it making any crappy annoying noises.

      • So don’t buy it they aren’t forcing you to buy anything that makes noises when its working harder than usual.. I admit that if it happened while the phone is Idle it’d be an issue, everyone is being immature about the situation.

      • smtp25

        If the noise is not on every phone then its a Fault. When I buy it, if it has a noise then I won’t just be accepting it, as its a Fault. Why would you pay for a premium product and then accept it as faulty, if its not common to all phones and is not something say an S7 would make or any other top tier phone

      • George

        You are a living stereotype of an apple apologist. Really?

      • Apologist really? I recall stating All phones rattle I’m not being biased in no way shape or form…

      • haridsv

        Processors don’t have any moving parts. Such sounds could be an indication of a serious malfunction. It is funny it is being compared to rattling sounds, isn’t it clear that the phone is being stationary in this case?

      • Touch ID doesn’t have moving parts yet makes noise when its working. You can hear desktop processors working too. It’s funny that you think things require moving parts to make sound..

      • haridsv

        Working a touch ID involves moving it (at least in the older iphones), so yes, it has moving parts. You don’t hear desktop processors working, it is the sound of the cooling fan or the hard drive that you normally hear 🙂

      • The sensor is making the sound, Im not talking about the click of the button.. You can hear desktop processors especially AMD’s, I’ve been working on computers for a while and know the difference between HDD noises/ Fan Noises and processor noises.. Move along..

      • Ryan EWing


      • you couldn’t be more wrong.

      • YaBoyLilMayo

        Bruh take this L along wit apple for shipping phones with faulty processors, you’ve literally tried to defend them no matter how wrong you and the company are

      • You’ve yet to prove me wrong. I’ve been stating facts the whole time. Everyone just overlooks then because they think I’m defending ..

      • YaBoyLilMayo

        Lol you’ve been proven wrong by everyone bro just give up cornball. CPUs and GPUs aren’t supposed to make any noise at all even under excessive use. You’re still in denial and trying to defend apple even though every time a new phone comes out there’s always some huge problem with the phones lmao hold this L

      • Where have people proved me wrong? I know first hand and they just assume. I’m not in denial nor defending Apple. I know they’ve been wrong before and you’re right there are problems with every phone that comes out. Every phone* not just iPhones..

      • YaBoyLilMayo

        No there’s always a huge problem wit iPhones as soon as they’re released every single year. You don’t know anything first hand multiple people reported having their CPU a making hissing noises how is that not proof? It’s not supposed to make any noise AT ALL. Just take this L and stop bruh

      • You no nothing first hand either ‘brush’ just going of what numerous complaints say.. No ‘L’ to take.

      • YaBoyLilMayo

        Except I do KNOW* because multiple people keep reporting their processors making loud noise. I don’t understand why u don’t get it…..they’re making noise and shouldn’t be making noise at all especially on a product that came out a few days ago. Why is that concept so hard for u to grasp. Apple made a faulty product again just face it

    • h4nd0fg0d

      Word!!!! Hoping mine doesn’t hiss whn it arrives b/c i have some games that will nuke that chip!

      • Has anyone phone stopped working that had the ‘hissing’ noise?,

      • h4nd0fg0d

        Bottom line to this whole quandary, if some 7+’s make the noise and others don’t there is a definitive issue. End of story. Cheers, techie.

      • could be all, some may do at different stress levels.. no issue if it doesn’t fail, the ones that make noise could outlast the ones that don’t for all we know. cheers!

      • h4nd0fg0d

        It wouldn’t concern me in the slightest if all made the noise. Semi disturbing if only a small percentage do. This would be a red flag by my estimation. I should have mine next week. Only time will tell.

      • I could only agree if miniscule sound was an issue. As long as they aren’t making that noise as if they’re ticking time bombs then the noise is nothing but a noise. In fact how do they know if the CPU, Has anyone taken apart the device and placed the mic on the cpu suppose its another chip anyway..

      • h4nd0fg0d

        Anything is possible. Honestly I’m not very concerned, but for $900 I’d like to have a silent one regardless.

      • Don’t get me wrong I see where everyone is coming from spending hundreds and you want perfect.. I just think its okay it makes some load noises and won’t thing of returning mine if it happens. As long as it doesn’t fail on me I’m good.

  • iDoktor

    Have someone noticed that the animation when closing an app is a little bit “lagged”? I’ve a 7 plus.

    • nova voter

      I hadn’t noticed so I checked. Yes, there is a little hitch, you’re right.

      edit: I’m on a 7.

    • Jake Platt

      Future software update should fix this. More than likely an iOS 10 issue.

  • Scotow

    How to stress my iPhone ?

    • You can stress test it with a benchmark utility app, graphical-heavy video game, or with a software restore.

      • MrSolo816

        Like Geekbench? I ran Geekbench and heard nothing.

      • Try another method for loading your CPU then. I don’t have mine yet, so I can’t say what makes the noise and what doesn’t. :/

      • Scotow

        Yeah, I don’t think Geekbench run long enough to warm up the CPU.

      • Alex-V

        On Android Phone..the benchmark apps overheat the phone

      • Agneev Mukherjee

        LOL, launching Google Keep on Android makes it way laggy than launching NFS: No Limits, Asphalt 8, Gangstar Vegas on an iPhone. Combined.

      • Rook HD

        what an ignorant comment. Which android phone do you use? some crap chinese phone?

      • Agneev Mukherjee

        It ain’t ignorant if the phone’s running Android 2.2, bought way back in 2007.

      • Rook HD

        trying to sound smart eh? It is indeed ignorant. First android phone was released in 2008, dumbo.

      • Agneev Mukherjee

        Ok, I’m apparently mistaken… I bought that phone in 2009, cunt


      • Rook HD

        Don’t try to act smart if you’re a dumbo by nature, potty mouth.

      • Agneev Mukherjee

        Apparently it’s good to know that we are not running low on crazy

    • Give it unrealistic business expectations and then force it to work unpaid overtime away from its family over the holiday season.

      Kidding aside, use a benchmark application like Geekbench, or try playing a 3D-heavy game like Oz: Broken Kingdom.

  • n0ahcruz3

    Mine hasn’t shipped, so hoping mine doesn’t hiss lol

  • Franklin Richards

    I can hear it too. But it doesn’t sound as alarming (or as loud) as the youtube video makes it out to be.

    • Hopefully I can’t hear it when I get mine, that’s all I have to say.

  • Lawrence

    Went to buy the iPhone 7 yesterday.. Didn’t like the home button sensation, I’m sure the changing port will break someday if i keep running using my wired headphones, camera and screen.. Couldn’t see the difference, now this?.. Good thing I bought the 6S instead, traded in an old iPhone to discount it even more. I don’t like to be a beta tester.

    • therealjjohnson

      You think the lightening connection will break? You do realize the 6s and the 7 have the same lightening connection, what do you mean?

      • Lawrence

        So connecting the included earphones or adapter to the lighting port and the putting the phone in your pocket will induce a lot of stress on the port while walking, running, etc.

      • ^THIS^ is a very good point.

      • h4nd0fg0d

        Ok, ya. Just like so many 3.5mm headphone jacks were broken from pocketing. Smfh&lmmfao. Logic much?

      • Lawrence

        Try it for a few months and see. Btw the 3.5 mm contacts have “a lot” of travel, they are flexible. Now check the lighting port, do you see those little contacts flexing?

      • George

        Remember when people said to stop moving your lightning cords because it was human error that they bent and broke easy? Imagine headphones.

      • therealjjohnson

        No, honestly I don’t. It’s been there since 2012ish and I have literally never had a issue with the connection or heard of them breaking.

      • George

        Well you must be an angel then.

      • Agneev Mukherjee

        Correction: Lightening means “a drop in the level of the uterus during the last weeks of pregnancy as the head of the fetus engages in the pelvis.”, so it should be lightning.

      • h4nd0fg0d

        I can appreciate that ^^^^^

  • Hiss gate.. here we go again.. I see people reporting nonsense about yellow gate screens too. Always some nonsense when the new phone comes out.

  • Heitor


  • Ernie Marin

    It’s just a noise people, stop overeating, until the phone it’s actually non functional just chill until you can replace it.

    • Tamahome5555

      This is actually common in routers too. When the router is under full load.

      • smtp25

        Yeah I for one love a noisey fricking humming router ..#not

    • I get the same noise from my laptop’s CPU when rendering videos, doesn’t seem to have caused any hardware issues.

      • techfreak23

        Does your laptop have a fan system in it?

      • Yes, although now that I think about it, the sound might be coming from the SSD instead of the CPU.

      • smtp25

        No your right its the CPU, ok I can deal with that on a laptop but not a phone I might use in quieter places or on a bus/train/plane

  • Rowan09

    No surprise with some issue. If it’s an hardware issue it will be fixed and if software it will be fixed shortly. Apple has no choice but to respond soon about this issue and I’m interested in the reason.

  • Srv Rungta

    It’s the Basilisk from Harry Potter and the Chamber of Secrets. Duh!!

    • techfreak23

      lol made a similar joke to my coworkers after we listened to the video.

  • George

    Lmao, cocky bastards making fun of the note 7 and now the iPhone 7 literally sounds like it’s about to explode.

  • I’d be interested to hear how loud this actually is. Obviously this recording only lets us hear the sound being made, but it can’t tell us the volume.

  • Salman ahmed

    I think i will buy iphone 6s instead .note 7 and iphone 7 has got problem on their hands

  • mrgerbik

    I can see it now – tons of youtube videos showing the hiss from the iphone.

    The user invariably turns up the volume to hear it better then BAM! some loud stupid shit to scare the crap out of you


    Thank god i haven’t had any issues with my 7.

  • Abhijeet Gupta

    Did Tim Cook just make the iPhone 7 learn to hiss, from a snake

  • nonchalont


  • Drocx

    Don’t worry iPhone users, Apple will fix it. They will limit the CPU speed to 1Ghz. You won’t notice it, and you won’t even care because it’s the amazing iPhone. 😛 It will still run the Mario anyway. 😛

  • TJ

    its sounds like sprinklers

  • Antzboogie

    If this is true this is very bad very very bad. Apple was supposed to learn from last year and apparently they have not. I hope my iPhone 7 Plus does not have this problem. Still no statement from Apple?? It must be serious then.

  • Jerry

    Ha! Under LOAD

  • stand back! Its gonna blow!

  • rewind stop.drop.

    That sound isn’t from the processor, it’s the sound that a speaker makes when there’s cellular interference. The same exact sound happens from a guitar amp when you se Your phone on it and you get a call or it downloads something.

  • Ill get mine on Wednesday to hear for myself as well, I doubt a chip with no moving parts can generate a loud noise like the video displayed, Something minute like you described yes definitely, like how the touch ID sounds.. I wonder if that still does it too..

    • techfreak23

      I have never been able to hear my Touch ID working other than the time I mentioned above. Haven’t tried with my 7 yet.

    • techfreak23

      So I know I’m bringing up something 2 weeks old, but my buddy with an iPhone 7 Plus was installing the new 10.1 beta and his phone started making the hissing sound during the download. It was super loud. We were out on our sales floor with a bunch of noise and you could hear it loud and clear without holding closer than 6 inches from your ear. Definitely an issue. Also has a creaking issue when he is actually using the device.

      • Thats fine, I’ve also concluded it is a thing. Mine doesn’t do it and I doubt any harm can come from it but definitely get it swapped if the noise is unwanted..

      • techfreak23

        I’m just surprised Apple hasn’t made a statement about it yet. It was just as loud as it was in the video. I was even able to catch it with my iPhone 7 mic in Voice Memos.

      • Im still thinking its the speaker making the noise though. Have you listened to see exactly where it was coming from.

      • techfreak23

        Yeah it’s loudest on the back of the phone to the right of the Apple logo, right where the SoC is. Definitely doesn’t sound like it’s coming from the speaker…

      • Thats pretty interesting. The fact it doesn’t have any moving parts and it is still that loud is perplexing.

      • techfreak23

        Yeah that’s why I’m curious to see what Apple will have to say about it. I’m surprised they haven’t acknowledged it yet.

      • Idk but I’d love to have one that does it taken apart to pin point where its coming from.