Stock kernels often prioritize stability over performance. Custom kernels and ROMs allow you to tweak CPU governors, underclock the processor for battery life, or overclock for gaming. Many users report a noticeable reduction in lag when switching from the stock ROM to a lightweight custom build.
If you are unhappy with the stock software, your options are limited, but here is what the community recommends: nokia g300 custom rom
After installing your Nokia G300 custom ROM, you will likely face two major issues: Stock kernels often prioritize stability over performance
1. The Camera Dies The stock camera app relies on Nokia’s proprietary HAL (Hardware Abstraction Layer). On custom ROMs, install GCam (Google Camera) for Snapdragon 480. Look for a config file specifically for the "Nokia G300" on CelsoAzevedo’s site. If you are unhappy with the stock software,
2. Wi-Fi Calling / VoLTE Vanishes
Custom ROMs rarely include carrier IMS settings for T-Mobile (the G300’s primary carrier in the US). To fix this, you need to manually push your carrier’s mbn file via the Engineering Menu (*#*#3646633#*#*), which requires root. This is advanced.
Because the G300 supports Project Treble, you can flash GSI ROMs. This allows you to run virtually any Android 13/14 GSI (Phhusson's builds). It's a great alternative if dedicated ROMs aren't available, but expect to manually fix fingerprint and audio routing issues.