I was checking the third-party licenses used by this iPhone version (image shown below) and noticed that it includes the use of GCDWebServer.
The GitHub page for GCDWebServer says that:
GCDWebServer is a modern and lightweight GCD based HTTP 1.1 server designed to be embedded in iOS, macOS & tvOS apps.
There is a support information for this browser here but the documentation does not mention the use of an internal web server.
This issue has relevance in evaluating the risks from possible open ports in connection with determining whether to allow this browser in corporate bring-your-own-device configuration.
Question: What use would a mobile device web browser have for running an embedded web server?