Some GSIs suffer from MediaTek IMS bugs. Check the settings menu of your custom ROM for a feature toggle labeled "Phh Treble Settings" to enable IMS features manually.
Always ensure you have a backup of your NVRAM or EFS partition via TWRP before flashing, which contains your network configuration. infinix zero x neo custom rom
The custom ROM community is powered by its members. Here are some places where you can find help, tools, and new ROMs for your device: Some GSIs suffer from MediaTek IMS bugs
Power-user customization tabs, status bar tweaks, custom themes, and integrated gaming optimization modes. status bar tweaks