Can I connect my iphone to a PC to capture network traffic

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As long as "PC" means "personal computer", and the personal computer in question happens to be running macOS, yes, you can; see Stefdnk's answer and the "Set Up iOS Packet Tracing" part of Apple's "Recording a Packet Trace" document.

Note that, although the instructions in Apple's document use tcpdump, Wireshark should also work.

If "PC" means "personal computer" in the sense of "not a Mac", the answer is, as far as I know, "no", unless your "not a Mac" is a Hackintosh and thus running macOS. Windows, Linux, etc. won't work.

Try this : http://www.gilles-bertrand.com/2016/0...