This android application can view the STL files. I'm the beginner for OpenGL programming, it's not comfortable to view the model. If you have any idea for improving this application, comment to this article please.Known problem: It doesn't work with some complex STL file. Maybe out of memory error.Updated 2013 Feb. 6: Now, I published this project as open source. The source code is available at github repository. https://github.com/kshoji/STLViewerJust access to the Android Market(below), and install it into your Android phone. https://market.android.com/details?id=jp.kshoji.stlviewerYou can download the STL file with Opera or some browser. Default browser with my DesireHD, couldn't save STL file from thingiverse. I don't know why.After downloaded the file, then open with the application. Tap folder icon, and you can see SD card directory. Then choose STL file.