Siri Ported To iPhone 4 [Updated]

iPhone 4S - Siri

We have some good news for iPhone 4 users who were hoping that Siri – Apple’s revolutionary personal assistant feature, that is exclusively available only on Apple’s iPhone 4S, can be enabled on iPhone 4.

9 to 5 Mac reports that they have been working with iPhone developer and hacker Steven Troughton-Smith to have managed to successfully port Siri to iPhone 4.

9 to 5 Mac reports:

Troughton-Smith was able to get the beginning steps of a full port rolling after installing the iPhone 4S Siri and Springboard files onto an iPhone 4. 

Siri’s interface loads up with all the features from the iPhone 4S implementation. 

Siri on the iPhone 4 can recognize spoken commands in both the standard Siri view and the keyboard Dictation view. The only issue at this point is that Apple is not authenticating (obviously) commands to its servers from iPhone 4 hardware. The Siri port to the iPhone 4, at this point, also has the ability to speak back to the user. You may notice Siri and the iPhone 4 acting very sluggish in the above video. The issue here is not Siri, but is that a special GPU driver for iPhone 4 is needed; and it is obviously not included in the iPhone 4S binary cache – where the Siri files are located.

Checkout the video of Siri running on iPhone 4:

It hasn’t been clear why Siri is exclusively available only on iPhone 4S as there has been no official word on it from Apple. 9 to 5 Mac claims that there is no technical reason why Siri can’t run on iPhone 4 and they believe that even iPhone 4’s hardware can support it. 9 to 5 Mac goes on to speculate:

We are not entirely sure why Apple is making Siri an iPhone 4S exclusive but it could be due to special microphone support, or because the A5 may allow it to run slightly quicker.

You may remember that last year, Apple didn’t enable the custom wallpaper feature in iOS 4 for iPhone 3G users as it felt that “the icon animation with backgrounds didn’t perform well enough”. So it is possible that Apple was not happy with the sluggish performance on older iOS devices and as 9 to 5 Mac has pointed out, the special microphone support could have kept it out of iPad 2, which comes with similar hardware.


Steven has posted another video where the Siri UI is running a bit more smoothly on iPhone 4:

Let us know what you think in the comments.

[Steven Troughton-Smith via 9 to 5 Mac]

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  • That works horribly in the video. Granted, its obviously an early test but the whole phone is so slow, it’s unusable. I can see why it wasn’t supported on the iPhone 4 if they never manage to get it runnin faster than that.

    • kiddowiddo

      Check the update it works alot faster now

  • Bleach

    Apple’s way of business!

    • Ulquiorra

      That’s what I was thinking too….

    • Littlefckertits

      Yes!!! Now u r smart. Ur smart. Unlike everybody else except me I’m smart 2

  • axelr0

    How about porting in the other A5 processor iPad2?

    • Seebeemee

      Same reason iPad doesn’t have VoiceOver

  • Syed Adeel Masood

    finally a good news for iphone 4 ,now waiting for untethered jailbreak

  • Leslie

    @stroughtonsmith it would be very nice if we iphone 4 users can use that Siri. I know I would love it. I hope we could get that upgraded into our iPhone 4 soon. Thanks 

  • Kobe

    How can I get this on my iPhone 4

  • Pete

    I believe Apple held it back from iPhone 4 iOS 5 so it could sell more of the iPhone 4S

  • Bayguy69

    I think if Apple enable the Siri to the iPad2 it will be much better than the 4s.

    • Joe

      Your retarded. The iPad 2 has the same hardware

      • Alex

        You’re the idiot, the iPad 2 may have the same processor but it’s clocked at 1GHz, not 800 MHz like the iPhone 4s. That’s a BIG difference in a dual core chip. It would DEFINITELY run faster on the iPad unless they added more features to Siri. Learn your shit, bud.

        • trev

          ? ur a moron have you seen the difference between the ipad 2 and 4s in benchmarks? the underclocking of the a5 isnt that big of a deal. n00b

      • Jmoney

        Don’t comment on other’s brain capacity when you said ‘your’ when clearly the appropriate word was ‘you’re’. Rookie mistake, it’s okay.

  • Me

    Damn, that would be sweet to get it fully functioning. I’d love to have it on my iPhone 4.

  • Bris

    wonder what the cydia app will be called for the release of it.

    • moe


      • DNMEBOY

        Lol that’s the Siri like android app. Although it works pretty well it’s not the same and I doubt that Siri would be called iris on cydia. What makes anyone think it won’t be called Siri? After all, it’s not a new app, it’s Siri ported to other iOS devices. So how about “Siri enabler” or “Siri installer” or even “Siri”

  • Mmick

    Don’t you get it? Something is wrong with the custom drivers and copy paste they did, because the phone is slow also WITHOUT using the app!!! They should have mixed some specific libraries that are made for another hardware, and of course, run bad on iPhone 4! It is somewhat like trying a NVIDIA GPU to run with AMD drivers, despite being equally fast each one with their own drivers. The issue is NOT lack of power, it is because the libraries were written for a different hardware. No Siri for 4 because they want to sell a lot of 4S because it is the most profitable phone ever between production cost and sales price

    • ctrev08

      ya its cause there the same phone lets get our loyal custemers all hyped up and sence were behind sechdule lets throw some left over ipad cpus throw them in the leftover iphone 4’s add a 5th lenese add an s to iphone 4. Add some updated dragon speach that costs us about .00001¢ per phone. And just over hype it as a revolution. And screw every one over when we release iphone 5 in a few months. Hell they know they can ride jobs death for a while i would not be surprized to see then release the iphone 4ss and then the 4sss cause they know fanboys well buy what ever apple slaps the free e name on.

      • Chip

        English obviously not your first language. Rants are always more effective if they’re written by an intelligent lifeform.

      • Joe

        Your retarded as well it didn’t take a genius to figure out apple would release an iPhone 4s they did it with the 3G too. After the 5 comes out there will most likely be a 5s just a higher performance model it’s a market pattern dumbass

      • Wyliecat

        Haha i noticed fanboys attacking your spelling but i totally agree with what youre saying mate! For some unknown reason many people these days will lap up whatever crap is put in front of them. That is why big companies are lowering their standards- they know there are knobs out there who will buy crap and tell others how amazing they think the crap is lmao

        • DNMEBOY

          And the thing that sucks about this is that every company is doing it with every product. Prices go up and quality of things get shittier.

  • gomaya

    Business as usual for apple.The same way iOS 4.3.5 is restricted from using there ibook on device.

  • Guss

    How about untethered jailbreak??, I think this can wait! more important is the untethered! at the end apple knows why they don’t enable this on other iOS devices, remember the multitasking??

    • BAe

      Different people working on these things. This guy may not have skills in jailbreaking.

  • Abdulla

    Why isn’t he talking and giving a command????????

    • readandunderstand

      If you woul have read the article then you have noticed the line saying “Siri on the iPhone 4 can recognize spoken commands in both the standard Siri view and the keyboard Dictation view. The only issue at this point is that Apple is not authenticating (obviously) commands to its servers from iPhone 4 hardware. “.
      That is why he is not saying anything. Just no point there is it.? 🙂

  • Rachelle Morgan

    Would be great if he could give it a command so we can actually see it performing on the iPhone 4.

  • Zed Sefi

    They are getting there. Siri could be enabled in no time on iP4 (although I would say limited) but it is better than nothing 😉 Keep going Steven

  • Zed Sefi

    Yes I agree with some other poster. This can wait. I am desperately waiting for a jailbreak for both of iPhone 4S and iPad 2 on iOS 5 (whether tethered or not). PLEASE!!!


    Maybe this guy isn’t a jailbreaker and that’s why he’s working on porting Siri and not an untethered iOS 5 jailbreak. I could be wrong but I don’t think I’ve ever read or heard his name come up in any previous jailbreaks. I think he should continue working on Siri. And I believe it’s exlusive to the 4s as a selling point to boost sales. Otherwise the 4s is just a more powerful iPhone 4. It’s not like all the apps taking advantage of the a5 in the iPad 2 aren’t already running on the iPhone 4 and look pretty much the same due to the smaller retina display.

  • Gustavo

    I thought it could work nicely on an iPad2…

  • John

    You can make the iPhone and iPad run faster if it was jailbroken.
    For iPad go to cydia> sources> edit> add> type> then click add anyway( you need to be a hacker to do this) > then find Speed Intensifier> install. Then go to settings search for speed in intensifier and change your speed.
    For iPhone go to cydia> manage> Sources> edit> add> ( you also need to be a hacker)> add anyway> find speed intensifier> install> go to settings> find speed intensifier and change your speed.


      And this works on iOS 5?

      • DNMEBOY

        For anyone wondering, yes this does work with ios 5. However it only speeds up the animation transition speeds. So it does what it says and speeds up your phone but by slight amounts. I’ve tested it side by side with and iPod touch 4 and sure the transition speeds are faster but app loading times and web pages are all the same really. Also this won’t make a difference when it comes to wether the iPhone 4 hardware can run Siri or not as the tweak doesn’t give your phone more power or increase the clock speed of the CPU so I really don’t see how the original post is relevant to the topic and the same goes for my replies.

  • John

    Sorry for iPhone I ment

  • iPhone 4 Owner


    I think you are doing a great job on this. Once again apple has managed to slap its current customers in the face by withholding the goods. And calling it a hardware component support issue, which clearly is not. I tell you regardless of this working on the 4 or not I was not buying a 4S as this one feature is not worth the $200 bucks and a 2yr contract. Sorry apple, but looks like you look like an idiot for lying once again (Congratulations). Steven, Thank you for working on this and posting it (even if limited its better than Apples falsely set boundaries!) Keep up the good work!

    • Doggz

      I agree with your statement. Apple can seem to come across as penny pinchers. I mean the phone is over priced for one and why don’t they build a good spec phone which is future proof as in upgradable components for a reasonable price at an apple store, keep the same price structure or lower it so more people can afford to buy the iPhone and charge a small fee for major IOS upgrades like from 3 to 4, 4 to 5, 3 to 5 etc.

      I don’t really like giving my ideas for free as some fucker from
      apple gets paid for this shit!

  • Andrew

    If I port Siri to my iPhone 4… Will it hurt or void my warranty? . Also will it affect future updates in IOS?

    • Frank

      Who care u will play with this for 2 weeks get bored and not use it anymore… it’s junk u are not gonna use it in public as u don’t want others listening to what u are saying

      • DNMEBOY

        Right, how many regular people will actually walk around in public talking to their phone, not to people on the phone, the actual phone lol. I could see Some people doing it if it fits into work or aomething but I’ll use it at home and that’s probably it but I can’t wait to try it out either way.

        • Phil

          You’re absolutely right. No one drives cars, after all…

          • DNMEBOY

            Speaking to Siri while driving a car is one thing, speaking to your phone out in public is another. I was talking about speaking to your phone out in public. Not in the privacy of your moving vehicle on the freeway. I would use it while driving my car. The other people driving their cars, if at all will see me for a second. I could care less what they see me doing while I. Driving. They should be paying attention to the road anyway.

      • Wyliecat

        I agree. I would feel a complete **** using siri in a public place. If one of my mates started using that shit on his phone on a lads night out he would end up being ridiculed in public

    • Wyliecat

      Its just as crap and useless as facetime (anybody bother using facetime at all? I dont know anybody who owns an iphone 4 who gives a toss about facetime or siri)

      • DNMEBOY

        I use FaceTime to see and talk to my daughter on my breaks at work. She loves it and I enjoy being able to see her whenever I want to. She’s only 16 months old but she loves being able to see me so yeah someone uses FaceTime. I’m sure lots of people use it for seeing relatives that live in other states. Just as they use web cams on computers. FaceTime isn’t useless but I see your point. It was a huge deal at first and now you barely hear anyone talk about it. I’m sure people use it still but the initial excitement has just worn off.

  • fas

    Oh common, it should be there on the iPad 2.

  • The update runs way faster. Impressive.

  • salk

    I hope the phone there is 4 and not 4S … did anyone checked?
    but its cool if it can work on 4… I wonder how?
    I presume that you cannot upgrade your phone afterwards… its gonna be jailbroken

  • paul

    there is an app in the app store called vlingo that is better then siri check it out. it has voice to text and it is amazingly accurate, and many other features. and its free!


      It’s hardly better than Siri. And it’s not the only free app that uses voice commands. Vlingo doesn’t talk to you like Siri does either. Also, vlingo is nothing new.

  • Scott

    Cvlingo is no way near as good as Siri. There is one other app which does the basic things as Siri but still not as good. It’s called *voice actions* I think you need to be jailbroken to use it. Give it a try.

  • Scott

    vlingo is no way near as good as Siri. There is one other app which does the basic things as Siri but still not as good, it can also speak back to you.. It’s called *voice actions* I think you need to be jailbroken to use it. Give it a try.

  • Cesar

    Keep on going! Excellent job so far, you’ll get there! Thanks for you effort!

  • iPhone 4S + Me = Really Awesome

    I’m pretty sure that the slower one is a jailbroken 4S and the faster one is a non-jailbroken 4S. The hardware in the 4S is different. The 4 has Voice Control, while the 4S has Siri.

    • Fckertitsandass

      No No No


      There is no jailbreak for the 4s…..


      Also the hardware has nothing to do with Siri or voice control…and if the 4s were jail broken what exactly makes you think the slower one in the video is a jailbroken 4s and the faster one a non jail broken 4s? Jailbreaking does not slow your device down. I bet they are both an iPhone 4, the same iPhone 4 And the videos are just as they say, one without the driver and one with….

  • Wyliecat

    Why cant siri accept the command “change message tone to a custom one chosen by myself like any other phone on the planet”
    So much for apple giving its customers what they want

    • pj

      dude thats an update in iOS 5, you can change all the sounds for any of your alerts

  • Littlefcker

    U guys r soo dumb!! They didn’t let Siri on to the iPhone 4 because the wanted u to buy the 4s!!


      We all are well aware of that but thanks for pointing it out as if it isn’t already completely obvious.

  • Fucking_ur_mom

    Faggits!!!!!!!! Gay hackers!!!

    • Manny

      You have to be the immature turd to respond like that.

      Overall the Siri technology is incredible. I hope Cydia does add this to Springboard.

  • Hell boy

    Can’t wait for Siri is ready for iPhone 4