In order to capture the HTTP/HTTPS message from your iOS Simulator devices, please navigate to:
Certificate Menu -> Install Certificate on iOS -> Simulators
The following photo describes three steps:
Install Root Proxyman Certificate on your machine: You can follow the macOS Guide.
Install Proxyman Certificate to all available simulators, which you have opened at least one time.
Reset the Simulator: Proxyman tries to reset all simulators, so it will load the new Certificate.
Opening the Setting app -> General -> About -> Certificate Trust Settings and verify that Proxyman Certificate is installed and trusted
If it's not installed, please open the iOS Simulator Setup (Certificate Menu -> Install Certificate on iOS -> Simulator) and click on the 2nd button.
If it does not work again, please try using Legacy Code in Proxyman Preference -> Advanced -> Un-check `Use simctl for iOS Simulator` then trying again.
If you could not install the certificate, you can manually do it:
Export the Proxyman Certificate: Certificate Menu -> Export Proxyman Certificate -> Select Desktop folder and Save
Open the Simulator and drag the certificate and drop it on the Simulator screen
Quit the Simulator and re-open
After the installation, we can start capture and view HTTPS messages by following SSL Proxying Doc
See detailed steps to debug an application on iOS Simulator with Proxyman