Dark themes can provide significant energy efficiency improvements on OLED screens which are becoming increasingly popular. Though IG would probably benefit sig

Dark themes can provide significant energy efficiency improvements on OLED screens which are becoming increasingly popular. Though IG would probably benefit significantly less than text-heavy apps because the screen is mostly taken up by photos which aren't impacted by dark themes. https://www.anandtech.com/show/9394/analysing-amoled-power-efficiency https://www.anandtech.com/show/9394/analysing-amoled-power-e... This article is a bit old, but on the Galaxy S6 at full brightness displaying an image with 40% average picture level saves half a watt compared to full white.