Are there alternatives that enable this function? Since I have a flat where I want to have a fixed wifi for printers, multiroom etc. and not a fixed internet subscription from Swisscom, I am looking for a solution where the internet connection of the iPhone can be passed on to a wifi router via USB.

Hello

No, this should not work, but the device can be used as a repeater, simply select the SSID of the iPhone and then repeat.

Greetings