How to Proxy iPhone/iPad Traffic Through Fiddler for HTTP & HTTPS Debugging

Enable Remote Connections

Start Fiddler, open Tools → Fiddler Options , check the Allow remote computers to connect box, and confirm the prompt to restart Fiddler.

Configure Windows Firewall

After restarting, Windows Firewall will ask whether to allow inbound connections to Fiddler. Click Allow . Adjust other firewalls or antivirus software similarly. Remember to disable the remote‑connection option after debugging to avoid security risks.

Set Up iPhone/iPad Proxy

On the iOS device, go to Settings → Wi‑Fi , tap the info icon next to the connected network, scroll to HTTP Proxy , select Manual , and enter the Windows PC’s IP address and the Fiddler listening port. If a VPN is used, configure the proxy settings on the VPN page as well.

Capture HTTP Traffic

With the proxy configured, open a browser on the iPhone/iPad. All HTTP requests will appear in Fiddler on the PC, allowing inspection of headers, payloads, and responses.

Capture HTTPS Traffic

Download FiddlerCertMaker.exe from http://www.fiddler2.com/dl/FiddlerCertMaker.exe and run it to generate a root certificate that iOS can trust.

In Fiddler, go to Tools → Fiddler Options → HTTPS , enable Decrypt HTTPS traffic . If already enabled, first click Remove Intercepting Certificate , then enable again.

Click Export Root Certificate to Desktop before closing the dialog.

Install the exported certificate on the iPhone/iPad (see next section).

Eliminate “Cannot Verify Server” Warning

Install the iPhone Configuration Utility (available from Apple Support) and create a configuration profile that trusts the exported certificate:

Open the utility, select Configuration Profiles → New , and add the exported certificate.

In the Credentials tab, locate the DO_NOT_TRUST_FiddlerRoot entry and replace it with the new certificate, matching serial numbers if needed.

Connect the iPhone, select the device under DEVICES , choose the new profile, and click Install . Enter the device PIN if prompted.

Result

After completing these steps, HTTP and HTTPS traffic from the iPhone/iPad can be inspected in Fiddler on the Windows machine, enabling debugging of web applications, including those that use AJAX or other secure communications.