This model is accurately modeled from the 2D drawings from Apple's Development resources. As Apple does not provide 3D models, people who develop accessories for these phone need accurate models to leverage.
Versions of this model also include surfaces that represent the keep out areas for projection phone hardware such as the cameras, mic, flash, and ALS proximity sensors. If you are designing a case, these keep out zones are critical. the solidworks file should also include a sketch for the Qi charge keep out area as well as the keep our areas for metal objects.
We have donwloaded numerous iPhone models and none of them are truly accurate to and engineering level. This one is.