What settings maximize a flagship smartphone's daily battery life?

[Brandon75]

I recently upgraded to a flagship smartphone praised for its camera and performance, but I'm consistently disappointed by its battery life, barely making it through a full day of moderate use without needing a top-up. I've already turned down screen brightness and disabled background refresh for most apps, but the drain still feels excessive. For others who prioritize longevity, what specific settings adjustments or usage habits have you found make the most significant difference in extending daily smartphone battery life? I'm also curious about real-world experiences with power banks and whether certain fast-charging habits are actually detrimental to long-term battery health.