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Vivo V40 Lite PD2423F QCN File Download The QCN file for Vivo V40 Lite PD2423F is a backup of your device’s radio configuration, including IMEI, Wi-Fi MAC, Bluetooth, and baseband settings. It is essential if you’ve lost signal, IMEI, or network after installing Stock ROM. Why Use QCN? Restore IMEI and baseband after installing stock … Read more