Michael Soluyanov writes:
A jewellery brand "Caviar", a Russian-Italian company specializing in bespoke iPhones, Samsungs, have designed 3D-constructor of mobile phones. It has created in Blend4Web.
In the 3D-constructor you can assemble your model online using a large number of elements and materials. You can access it here.
Here is a introducing video about 3D-constructor, also created in Blender: