Pro tip: Does dark mode save battery? Rather akin to the Wi-Fi-and-battery-life debate, you may have heard divergent anecdotes about whether or not dark mode can get you more durable battery life on your smartphone. It turns out that the response here is also “it depends.” In dark mode, applications are showcased in a dark-colored screen. On the OLED display of a contemporary smartphone, the black pixels don’t consume power, so you might anticipate significantly lower battery usage in dark mode. However, a 2021 study by Purdue University manifested that dark mode may not amplify a phone’s battery life that much. Thanks to the auto-brightness settings delineated above, phone brightness levels are frequently kept at around 30 to 40 percent in normal indoor conditions. At this level of brightness, dark mode solely yielded a power saving of 3 to 9 percent. Nevertheless, if the phone is at full brightness, the study discovered that transitioning from light mode to dark mode can spare as much as 47 percent battery power. Consequently, if you generally uphold your display bright, dark mode can still be a significant battery-saving stratagem for you.
Battery lifespan and charging habits The pointers above might be splendid for furnishing your smartphone with its optimal battery life, but will they aid lengthen the longevity, i.e. hike the lifespan, of your battery? A smartphone battery is contrived to retain its primary capacity for a definite number of charging cycles. For instance, according to Apple an “iPhone battery will uphold at least 80 percent of its maiden capacity for 500 complete charging cycles“. Therefore, it makes sense that if you can charge your smartphone less frequently by applying the tricks above, you will be capable of accomplishing a long-lasting battery on your phone.