These headphones are wired (mini-jack and USB interface) and are primarily suitable as a telephone headset on the PC. For iPhone, I recommend either in-ear or closed earphones with Bluetooth or headphones that you connect to the lightening port using an adapter.

As already mentioned in the previous answers, it is probably more suitable primarily as a headset for the PC. However, I use it for both, i.e. with the adapter you can also connect it to the iPhone. However, the volume control cannot be adjusted on the "cable" but only on the iPhone itself. But it works wonderfully for me as an all-round headset in the home office.

By means of an adapter (https://www.digitec.ch/de/s1/product/apple-lightning-auf-35mm-kopfhoereranschluss-adapter-lightning-35mm-mobilgeraet-adapter-5897235), this is also possible with this headset.

One more thing: If you tell me the intended application, I might be able to make a concrete recommendation...