Observation: if I keep a constant traffic on the wifi tethering to the iPhone, the tethering connection (router mode is ‚repeater‘) does not drop but keeps alive. Eg if I‘m constantly streaming music on a device connected to the router, the tethering connection is stable now already for almost 24h. Unfortunately this causes a lot of unnecessary data volume which makes this approach not practical.
Has someone an idea, if there is an option that the router is sending frequently a small data package as a heartbeat via the tethering connection? A ping to an internet server, something like this? This could keep the wifi tethering connection alive without causing too much traffic and data volume. Any idea? I think this could be a workaround.