I've had this exact same problem last week while going to Mount Roraima https://en.wikipedia.org/wiki/Mount_Roraima https://en.wikipedia.org/wiki/Mount_Roraima

I've had this exact same problem last week while going to Mount Roraima https://en.wikipedia.org/wiki/Mount_Roraima https://en.wikipedia.org/wiki/Mount_Roraima If I had just read this message before. This is an ingenious solution. He created a thetering wifi network with the same name and password of a network the phone would recognize. When there's a connection, it means the phone is near: "I’ve used my own phone’s tethering feature to create a wifi network with the same name & password as my cousin’s home network - and we started walking around the place. We made sure the other guy helping us with the search had his own wifi off, to avoid false positives, and waited to find a new connection to the hotspot. And it worked! The connection was made when walking nearby the parked truck, but it turns out that the phone wasn’t in the truck - it was lying on one of the ATVs that was parked by its side."