Troubleshooting on iOS devices
Features currently not supported by Unity iOS
Graphics
- DXT texture compression is not supported; use PVRTC formats instead. Please see the Texture2D Component page for more information.
- Rectangular textures can not be compressed to PVRTC formats.
- Movie Textures are not supported; use a full-screen streaming playback instead. Please see the Movie playback page for more information.
Scripting
- Dynamic features like Duck Typing are not supported. Use
#pragma strict
for your scripts to force the compiler to report dynamic features as errors.
- Video streaming via WWW class is not supported.
- FTP support by WWW class is limited.
Features Restricted to Unity iOS Pro License
- Splash-screen customization
External Libraries
It is recommended to minimize your references to external libraries, because 1 MB of .NET CIL code roughly translates to 3–4 MB of ARM code. For example, if your application references System.dll and System.Xml.dll then it means additional 6 MB of ARM code if stripping is not used. At some point application will reach limit when linker will have troubles linking the code. If you care a lot about application size you might find C# a more suitable language for your code as is has less dependencies than JavaScript.
Troubleshooting on iOS devices