To find and install custom ROMs on your Nokia C100, you can visit:
Since a custom ROM isn't a viable option for this specific model, you can improve its "proper features" through these steps: nokia c100 custom rom better
How To Run A New Android OS On Your Outdated Android Smartphone To find and install custom ROMs on your
Choosing a ROM for the C100 (practical recommendation) nokia c100 custom rom better
Running Android 14 on a phone that shipped with Android 12 is a massive upgrade. A custom ROM is better because it provides security patches months before HMD Global even acknowledges a vulnerability.
Result: A Nokia C100 that feels like a mid-range 2020 phone (Moto G Power level).