Siri voice assistant is only available on the iPhone 5, iPhone 4S and iPad 3/4, iPad mini and iPod touch 5G. Fortunately, there is a port of Siri that has been working a 100% free and running on iPhone 3GS / 4, iPad 2 or iPod touch 4G on iOS 6.1. Follow the instruction below!
Install Siri on iPhone 4/3GS, iPad 2 and iPod touch 4G running iOS 6.1.2
iPhone 4, 3GS, iPad 2, iPod touch 4G on iOS 6.1.2 jailbroken with evasi0n
Installation of Siri in iOS 6.1.2:
Step 1. Launch Cydia and add the following source: http://ihackstore.com/repo (Manage> Sources> Edit> Add)
Step 2. Then search in Cydia package source ihackstore marked “Siri” and for your device to iOS 6.1.2. Respring your device once installed package i done.
Step 3. Open the “SiriDr” appeared on your springboard. Go to “Free Servers” and select SiriPort.ru. Then press “Dismiss” and then “Download the Certificate.”
Step 4. A web page opens. Choose Siriport.ru.
Step 5. Click the “Install” to download the certificate. In the Settings app, finish installing the certificate on your device. The word “reliable” should appear in green.
Step 6. Go to this in the section “SiriDr” at the bottom of the application settings. Activate Siri, select the French language in the settings tab and redo of a respring iDevice.
Step 7. That’s it! Hold the Home button on your iPhone, iPad or iPod Touch to launch Siri!