How to install the __mitmproxy__ certificate authority on IOS devices:
  1. Set up the Mail app on the device to receive email.
  2. Mail the mitmproxy-ca-cert.pem file to the device, and tap on the attachment.
  3. You will be prompted to install a profile. Click "Install":
  4. Accept the warning by clicking "Install" again:
  5. The certificate should now be trusted: