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I don't but it's easy to test, just pick up a TV remote and press a button while pointing it towards the camera. It should look like a flashing white LED.

I should also mention that both IR illuminators and TV remotes are usually either 850nm or 940nm, I have not looked into that aspect of it. I imagine that it's possible that your camera can detect one but not the other...

My phone goes up to 980nm and it is a Note 9.

Both front and rear cameras work.

The light shows up as a pinkish purple.

Thanks, I had no idea about this.

My Google Pixel 8a doesn't show anything on either camera, but my friend's front camera did! It shows up light purple.

Easy test - check your black levels against someone wearing a black fabric or a reflective black surface. If you get a fair bit of grey in the image, odds are very great that you don't have an IR filter installed.

Raspberry Pi sells a camera especially without IR filter.

For anyone curious, that would be the "NoIR" camera: https://www.raspberrypi.com/products/pi-noir-camera-v2/