Purr — Rootless Resolution Cha is a utility app that changes screen resolution without requiring root access. By utilizing Android SDK reflection to access hidden APIs, you can customize your display settings through a permission grant via ADB. It is a great solution for those wanting more control over their phone’s resolution.

No root required

Purr — Rootless Resolution Cha reduces GPU load and improves performance on mid-range devices. It allows you to shrink your display area to avoid curved edges or camera cutouts that might obscure content. Once configured with a computer, the changes happen natively, ensuring that in-game buttons and UI elements scale correctly.

However, it can cause glitches, such as large, distorted, rounded corners on certain phone models or unresponsive touch areas near the notch. Some also reported that gesture navigation and embedded fingerprint scanners stop working after a resolution change. The status bar can also become visually squished or misaligned after resetting settings.

Give your phone's GPU a break

Purr — Rootless Resolution Cha is great for those who want to fine-tune their Android hardware without the risks of rooting. While it requires some initial technical setup and can cause minor UI bugs, its benefits are undeniable. It remains a solid choice for anyone needing a more flexible and efficient display.