Electronic device having metal housing and method for manufacturing the same

A method for manufacturing an electronic device having a metal housing, the method comprising:

• a forming operation for forming an external housing;
• and
• a lateral processing operation for processing a surface of the external housing,
• wherein the forming operation for forming the external housing includes:
• a base metal preparation operation for preparing a base metal of the external housing;
• a first numerical control (NC) processing operation for processing the prepared base metal to form the external housing;
• an insert injection operation for attaching an injection part to the first-processed base metal;
• a second processing operation for forming an outward part of the external housing with respect to the base metal having the injection part;
• a coating operation for coating a non-metallic material on a surface of the base metal having the outward part;
• and
• a third processing operation for forming a lateral face of the external housing by removing a peripheral part of the base metal from the outward part, and
• wherein the lateral processing operation for the external housing includes:
• an anodizing operation for forming an anodized surface on the lateral side of the external housing;
• and
• a diamond cutting operation for forming a diamond-cut face with respect to a boundary between the anodized surface and the coated surface of the external housing.