NEEDS JAILBREAK:
This is a how to guide to get Siri diction on you're iPhone 4. First install the repo from cydia "apt.if0rce.com" MAKE SURE YOU DELETE SIRIN1GHT OR ANY OTHER SIRI PORT FIRST .. than when its done go to sources and click it and go down to Siri0us and download it. Once again if you don't delete you're current port it will not work, and you will get stuck at the apple logo. Good luck!
Siri Dictation on iPhone 4 (HOW TO) - YouTube
This is a how to guide to get Siri diction on you're iPhone 4. First install the repo from cydia "apt.if0rce.com" MAKE SURE YOU DELETE SIRIN1GHT OR ANY OTHER SIRI PORT FIRST .. than when its done go to sources and click it and go down to Siri0us and download it. Once again if you don't delete you're current port it will not work, and you will get stuck at the apple logo. Good luck!
Siri Dictation on iPhone 4 (HOW TO) - YouTube