Embedding a LoRa module in the phone could come handy in similar situations; it could trigger a timed transmission of the latest known position before a given e

Embedding a LoRa module in the phone could come handy in similar situations; it could trigger a timed transmission of the latest known position before a given event, say a big bump followed by no movement or usage for X time, too long exposition to temperature and humidity incompatible with a house, etc. LoRa allows transmission at impressive distances using very low power compared to WiFi and other systems; a phone configured to turn itself off and use just the LoRa module to repeat a very short <phone code>+<position> say every 10 minutes wouldn't tax the spectrum too much (RF in that context is a very scarce resource) and its battery would likely last weeks.