That you would be able to permit video MMS performance which is lacking through default on the mentioned fashions of iPhone.
Apple has already licensed some video recording apps on the App Retailer for iPhone 3G and 2G. You need to use these apps together with “2G/3G Video MMS Allow” app, which lets you ship movies saved within the digital camera roll
via MMS, Youtube or e mail.
It is very important have a jailbroken iPhone 3G or 2G running iPhone 3.1.2 firmware to get this working. Follow the instructions posted here to first jailbreak your iPhone (if you haven’t already) before installing this app. The “2G/3G Video MMS Enable” app is available on Cydia for free on ModYouri repo. Simply add http://repo.modyouri.com in Cydia and then search for 2G/3G Video MMS Enable to enable video MMS functionality on your iPhone.