Hi,
I am new to unity. I installed trial version of iphone unity. Now I want to uninstall it and install just plain free indie version of unity. I installed free version, but it asked me for license, then click in “Internet activation”, and then when i click in “Free” button it gives an error telling that trial is over. But i want free version, what licese it is talking about? I am having bad experience with unity right from the beginning… 
Hi ajitdh,
In order to get things up and running you will first need to clear out the old trial installation of Unity so:
1.Uninstall Unity
2.Delete this file:
- Win: C:/Documents and Settings/All Users/Application Data/Pace Anti-Piracy/License Files
- Mac: HD/Library/Application Support/PACE Anti-Piracy/License Files
- Restart
- Download Unity again from our website, since your original install might be corrupt.
http://unity3d.com/unity/download
- Reinstall and test