It’s no secret that I love using mobile hotspots and my mobile router to connect multiple smartphones to a single data connection. I mostly do this for privacy, but it also gives me flexibility when I’m traveling between places with no Wi-Fi.I do this while traveling for work, but also when playing Pokémon Go. But after using this setup on a limited data plan on a few recent trips, I realized that I was using a lot more of my monthly cap than I intended.