Do I need iTunes or Apple Devices?

Not for Casttit. It talks to the iPhone over USB by itself.

Why did my music stop when I plugged in?

When the capture starts, the iPhone switches its sound to the PC and pauses what was playing. Press play again and it plays through Casttit.

Does it work over Wi-Fi?

With Casttit, iPhones connect over their USB cable.

Will I hear my squad from the iPhone?

The game's sound comes through to your PC headset. We haven't tested teammates' voices on iPhone yet; on Android they come through with the game sound.

iPhone to OBS on Windows by USB: no Mac, no capture card

Most guides for getting an iPhone onto a computer assume a Mac. If you stream from a Windows PC, the options look thinner. Here's what actually works.

Why iPhones are trickier

On a Mac, QuickTime can show a plugged-in iPhone's screen. Windows has nothing built in for that, so you need either extra hardware or an app that does the work over USB.

Option 1: HDMI adapter and capture card

Apple's digital AV adapter plus a capture card turns the iPhone's screen into an HDMI signal OBS can see. It works, but it's the most expensive route, it's a pile of cables on your desk, and you still have to sort out hearing the game yourself.

Option 2: wireless screen sharing

Some PC apps can receive the iPhone's screen over Wi-Fi, the way an Apple TV would. It's convenient, but the picture depends on your network, a busy home Wi-Fi shows on stream, and you still have to work out how to hear the game.

What about just a cable? Windows can't show an iPhone's screen over USB by itself: plug one in and OBS doesn't see it as a camera. That's the gap Casttit fills.

Option 3: Casttit over USB

Casttit for Windows captures the iPhone's screen and game sound over its USB cable. There's no app on the iPhone, and no Mac.

Install Casttit for Windows.
Plug in your iPhone and tap Trust once.
Press Open OBS preview and add it to OBS as a Window Capture with Capture Audio on.

Step by step, with what to expect the first time: iPhone setup.

What you get

A clean window for OBS with only your game in it: no buttons, no borders to crop.
The game's sound in your PC headset, while the iPhone's speaker goes quiet.
Picture and sound in one OBS source, with one Sync slider to line them up.

Things worth knowing

The first plug-in on a PC sets up Casttit's iPhone driver. Windows asks your permission once.
Music pauses when the capture starts: that's the iPhone moving its sound to the PC.
Portrait or landscape: the picture follows the iPhone. For portrait games, see the tip in Set up OBS.
Windows doesn't see the iPhone? Check Trust, the cable and the driver: PC not detecting your phone.
No sound in OBS? Usually one setting: six fixes.

The bottom line

If you already own a capture card and the adapter, it works. If you don't, an app over USB gets you the same picture plus the game sound in your headset, for nothing extra on your desk. Comparing the two in more depth: capture card or app.