Doogee S100 or Ulefone Power Armor 14 Pro

I’m looking for a solid smartphone with a high-capacity battery. I don’t care about performances: as long as Spotify Qobuz, Google Maps, Firefox and Lichess work seaminglessly, I don’t care about running video games with demanding-graphics. I also would like to pay less than 300$, and I don’t care about the camera. I...