If you try to access a https website in iOS simulator, you will see the error below.
Error loading page
Domain: NSURLErrorDomain
Error Code: -1202
Description: The certificate for this server is invalid. You might be connecting to a server that is pretending to be "your-domain.com" which could put your confidential information at risk.
Follow the steps below to bypass the ssl cert validation:
1. Drag and drop the .crt file to the iOS simulator.
2. Go to Settings > General > Profile, Select the cert and click “Install”.
3. Go to Settings > General > About > Certificate Trust Settings, Turn on the “Enable Full Trust for Root Certificates” option.