Turn off auto sync, location reporting and location history. You can leave location on and google apps still work.That's how I have mine and I don't have Google play services drain.
Idk I was just surprised. I know there's only little bits of 4g in nj but I got it on the 18th floor but not outside the hotel. Thanks for the theories.
I'm on Sprint and I was in a hotel in E Rutherford, NJ. I get 4G ON the 18th floor in the room even in the elevator but when I came down, it went back to 3g.