为了在iPhone上使用OTF字体文件，使用FontForge工具转TTF为OTF

http://stackoverflow.com/questions/1371407/has-anyone-had-success-using-custom-otf-fonts-on-the-iphone

Must you use an otf font on the device or can you convert it to ttf? It is relatively straightforward to convert an OTF font to a TTF font using a tool such as fontforge, perhaps that would be an easy solution.

http://sourceforge.net/projects/fontforge/postdownload?source=dlp