Custom GSIs often lack proper hardware abstraction layers for budget devices. Expect broken Wi-Fi, bluetooth, cameras, or audio.
This feature would optimize the device's meager resources to make it feel significantly faster than the stock Android Go experience. Dynamic RAM Compression (zRAM) Tuning nokia c20 custom rom
A GSI is a pure Android build from AOSP that can run on any device supporting Project Treble. The Nokia C20 does support Treble (Android 8+ requirement). You can flash a GSI of Android 13 or 14. Custom GSIs often lack proper hardware abstraction layers
However, the community has produced a few experimental and GSI (Generic System Image) builds. GSI is your best bet. nokia c20 custom rom