Get your chosen ROM and "GApps" (Google Apps) packages.

💡 : If your phone feels slow but you aren't ready to flash a ROM, try enabling "Remove Animations" in the Accessibility settings to instantly double your perceived speed.

Most A20s are stuck on Android 11. Custom ROMs can bring Android 13, 14, or even Android 15 (Beta) to your device. You get Material You design, better privacy controls, and improved notification management.

This is the "key" that allows you to modify the system software. Install a Custom Recovery: Tools like

A Custom ROM is a customized version of the Android operating system that is not officially supported by the device manufacturer. Custom ROMs are built from the Android Open Source Project (AOSP) and are designed to provide a unique experience, often with improved performance, new features, and a cleaner user interface.

A popular choice for those wanting the clean, minimalist look and feel of a Google Pixel device on their Samsung hardware.