saves on battery (less brightness on screen.. uses less power)Any Specific Reason For Dark Mode Being Used All The Time?
Don't really see the need for the upgrade to the S20 ultra these smart phones just seem a waste of money?I believe the S20 ultra has different refresh rates too for FHD @ 120hz.
Resolution will play a factor in the battery life but won't be that much. Maybe a 10% or so. As most of your apps are specific resolution. It just gets stretched a bit. If the game is true WQHD+ or QHD then it chows more power.