3D Model View for iOS supports a number of rendering modes:

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  • Wireframe
  • Solid, with textures if present
  • Wireframe + Solid
  • Toon shading
  • Reflection map shading
  • Anaglyph mode for stereo viewing

Below is an overview of these rendering modes (model credit: SquidSquad - turbosquid, skymap credit: Optikz - blenderartists.org)
3D model view solidSolid rendering mode

3D model view solid wireframeSolid + wireframe mode

3D model view toon shader Toon shader mode

3D model view anaglypg linesAnaglyph wireframe mode 

3D model view anaglypg solidAnaglyph solid mode

3D model view reflection mapReflection map mode