You can not get Siri if you jailbreak a iPhone 4. In order to get Siri you have to download the app.
Depends on jailbreak
Siri is currently only for iPhone 4s unless you jailbreak you're device.
Us Jailbreak me on the iPhone 4 if you have the firmware 4.0
There isn't a jailbreak for the iphone 4 yet, but there will be in the near future.
yes
I dont think you can use siri only the iphone 4 can by holding the home button
To jailbreak an iPhone 4 you need to download redsn0w. For better info go to youtube and search ' how to jailbreak iPhone 4 on (whatever your OS is .example: IOS 5).'
go to **1 to know about jailbreak.
yes
Jailbreak it.
Not legally, as the Siri assistant is an apple product only released for the iPhone 4S. Some jailbreak tweaks can give minor functionality, but may not be legal.
You can jailbreak your phone by installing third party applications.