The Y9 Prime's defining feature is its motorized camera.
This is rare on Kirin 710. If it happens, you need to restore the modem partition via fastboot: fastboot flash modem modem.img (extracted from stock firmware). huawei y9 prime custom rom
Huawei uses proprietary IMS (IP Multimedia Subsystem) stacks for Voice over LTE. The Y9 Prime's defining feature is its motorized camera
Modifying your device is not without risk. You may encounter: huawei y9 prime custom rom