Siri install
How to install siri in iPhone 4
iPhone 4, iOS 6.1
How to install siri in iPhone 4
iPhone 4, iOS 6.1
No you don't and you can't.
Siri is on iPhone 4S, 5, iPad 3 and newer, iPad mini, iPod touch 5.
You don't. Siri requires a 4S or higher.
Siri install