Okay, I will get to the point straight. If you want to load insecure webpage in iOS 11, add the following lines just before the last two lines (</dict></plist> below) to your Info.plist file (right click the file and view as source). I am using my website as an example below, you are free to use yours.

<key>NSAppTransportSecurity</key>
    <dict>
        <key>NSExceptionDomains</key>
        <dict>
            <key>choonsiong.com</key>
            <dict>
                <key>NSIncludesSubdomains</key>
                <true/>
                <key>NSThirdPartyExceptionAllowsInsecureHTTPLoads</key>
                <true/>
            </dict>
        </dict>
    </dict>        
</dict>
</plist>

 

Check this out if you want to know more; another example of an iOS app that use this exception.