A custom ROM is an aftermarket operating system based on Google's open-source Android code and is created by third-party developers. It offers a wide range of features and customization options unavailable in the stock ROM that comes pre-installed on your Android device.
How to Find the Right Custom ROM for Your Android Phone: 5 Factors to Consider
Looking to install a custom ROM on your phone? You need to keep these points in mind if you want to choose the right one.