Hi, Vanquished. Sorry to hear about the trouble. You've got a fairly unique situation there, because you've got some 5G signal coming in, but you also have an LTE Extender, and also have WiFi Calling active. The software in the phone is always going to try to connect to the highest priority signal, which is going to be the 5G signal. If the extender is in range, it will always connect to that next, and then only if the extender is out of range, should it be kicking down to WiFi Calling. However, whenever in WiFi Calling, if one of the other network types becomes available, it will switch again, and drop any current call. Whenever phones switch connection type, it can cause a period of "registration". This is basically the phone connecting back to the network and registering to receive calls. If you have very frequent signal switching, it's possible that this could cause a real problem for receiving calls. There's no way to lock 5G phones to LTE only, but you can try locking to WiFi Calling, which may completely alleviate all concerns. To do this, please ensure your WiFi Calling is active in your settings and then try entering airplane mode on the phone first. Then switch on the WiFi, and then wait a minute or so and see if the incoming calls work better. The one downside to this technique is you would need to remember to switch off your airplane mode when leaving home.
