iPhone wont download iMovie?

[zegig]

I can't download iMovie on my iPhone?
I have enough money for it, and I have a iPhone4. When I try to download the iMovie app it says "This application requires the iPhone 4.2.6 software update" what do I do? and how?

 

[spectre51]

Update your iPhone software through iTunes. What version of iOS are you running? On the iPhone go to settings -> general -> about and look where it says version.