High there! The answer is simple, the cellular version provides the possibility to communicate, receive and send messages and calls independently from your iPhone, e.g. while jogging. The only thing you need is a eSIM connection (multi device) , actually offered by digitec connect for CHF 5 pm in addition to your normal mobile abo.
You can find the entire selection on the following link: https://www.digitec.ch/de.... For configurations that are not currently listed, you are welcome to contact our customer service directly, who will be able to check a possible purchase: https://helpcenter.digitec.ch/hc...