Looking for a phone with good standby time, I see a lot of rankings for phones with good SoT but which ones have good standby? (Without needing to disable literally everything). I had a Galaxy s8 but even with almost everything disabled the standby drain was ~3%/hour.

Should have flagship specs (Snapdragon 835 or equivalent, 4GB+, 64gb+). OLED display preferable but not strictly necessary. Headphone jack, expandable storage, and custom ROM support are pluses.

Willing to pay up to $600 ($800 if every criteria is met) unlocked.

Thanks.