High Brightness Mode

Boost screen brightness up to 20 percent in sunlight

High Brightness Mode is a focused utility for anyone who struggles to read their screen under harsh daylight. It taps into a hardware feature found on many recent Samsung, Motorola, and OnePlus models to push brightness beyond the usual ceiling, offering up to a 20 percent boost on supported devices.

Rather than replacing your system brightness controls, this tool exposes the separate HBM setting that manufacturers include at the hardware level. On many phones, that option is not available through the standard brightness slider, and even if you uncover a hidden toggle, it may not be directly adjustable. Here, you can enable HBM with a simple control and fine-tune the threshold that decides when HBM should kick in, giving you a bit more say over when the extra luminance is applied.

The result is straightforward: your display reaches normal maximum brightness, then adds an extra push when HBM is active. If your device is rooted, the potential headroom can be even higher, though this depends entirely on the hardware capabilities of your specific model.

There are clear limits to keep in mind. Compatibility is tied to the presence of HBM hardware, so phones without it will not benefit. Even on supported models, the uplift is capped around that 20 percent mark unless your device allows more through advanced permissions. This is also not a general-purpose display tweaker, so you should not expect broader calibration tools or system-wide brightness profiles.

If you own a compatible phone and frequently battle glare, this app fills a very specific gap by surfacing controls that are otherwise buried or unavailable. It does one job, and for many outdoor scenarios, that extra bit of brightness can make the difference between squinting and seeing clearly.