Can I make new screen shapes?
Ai has its own set of 3d tools built in, allowing complex screen designs to be realised internally.
The Surface Modeller page is for creating 3d geometry to be used in your projects as screen surfaces whilst the Canvas Editor page allows different uv texture mappings to be applied to the surface to ensure your image sits correctly.
Alternatively, externally created 3d models can be imported in any of the supported formats.