Tools like EvolutionX or LineageOS offer deep UI customization that stock software does not allow. Potential Drawbacks
The Oppo A91, launched in 2019, remains a solid mid-range device with its Helio P70 processor and 8GB of RAM. However, as the official software cycle winds down, many users wonder if installing a custom ROM is better than sticking with the stock ColorOS.
Android Stock ROM vs Custom ROM: Which Is Best for Flashing?
Is an Oppo A91 Custom ROM Better? Performance, Features, and How-To
Installing a custom ROM can breathe new life into older hardware by addressing common performance bottlenecks.