System files have been modified (even just rooting). Fix: Reflash full stock firmware without the “Keep User Data” option.
Without the correct firmware, your ZTE Axon 50 Lite may suffer from random reboots, Wi-Fi disconnections, camera failures, or become completely unresponsive (a "hard brick"). Firmware ZTE Axon 50 Lite
The ZTE Axon 50 Lite uses a Unisoc (formerly Spreadtrum) processor. The official flashing tool is (also called SPD Upgrade Tool). System files have been modified (even just rooting)
Developed by the third-party community (e.g., LineageOS, Pixel Experience). These are rare for the ZTE Axon 50 Lite due to Unisoc’s closed-source nature. Firmware ZTE Axon 50 Lite