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All-in-one-enable-diag-reset-tool-for-samsung-lg-htc-huawei-qualcomm-my-blog May 2026

If dialer codes don't work, you can use ADB commands from your computer. This method typically requires . Connect your phone to the PC. Open a terminal (CMD or PowerShell). Enter the following commands sequentially: adb shell su setprop sys.usb.config diag,adb Use code with caution. Copied to clipboard

DIAG mode is essential for performing advanced technical tasks like , baseband fixing , QCN reading/writing , and network unlocking . 🛠️ Prerequisites If dialer codes don't work, you can use

5457#*#xxxx# (Replace xxxx with your model number, e.g., 855 for G3) If dialer codes don't work