WiFi keeps dropping in Mexico

Yes. If I put it in Airplane mode, it never drops from the WiFi and everything works normally. That's what I've been doing when I get back home. But that means that when I leave, I often forget to turn off WiFi mode so I don't get messages, calls, notifications etc. until I notice. And the reverse is true. I forget to turn WiFi on when I get home, and I'm unable to cast to my devices, because I'm not connected to the same network. There's nothing wrong with the WiFi, our other phone works perfectly well, and mine did last year as well. So while the Airplane mode workaround is functional, it's hardly the way I want to live my life. I'd like my phone to just work. And this isn't just for WiFi calling. It completely drops from the WiFi network, even though the signal is at full strength. So it's more like a preference. It will connect to the WiFi, then it's like some preference kicks in and says, "oh, drop that, he wants to be on the cell network."