Phones often dim the screen even when auto-brightness is off, usually due to overheating or power-saving features. When a phone overheats—from intensive tasks like gaming, video streaming, or wireless charging—the device automatically reduces brightness to protect internal components. This safety measure is especially relevant for the touchscreen, which consumes significant power. Additionally, Apple's Attention Aware Features can dim the display when not in use, and the Always-On Display setting on newer iPhones keeps the screen active even when locked.
On Android devices, similar issues arise from screen timeout settings or power-saving modes. However, the root cause is often the same: the system prioritizes battery life and thermal safety. Clearing power-hungry apps, removing protective cases, and ensuring the proximity sensor is clean can resolve many dimming problems. For iPhone 14 Pro and later, disabling Always-On Display or adjusting Attention Aware Features may restore consistent brightness.
Proximity sensor issues and display settings are common culprits across brands like Apple, Samsung, and others. Users should check their device's settings for screen timeout, power mode, and attention features to ensure the screen remains visible when needed while preventing unnecessary dimming.
Source: Engadget · Summarized by HeadlinesBriefing