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

For devices where manual methods fail, dedicated software can automate the process:

##3424# then select or use a service tool like XTC 2 Clip. 💻 Method 2: ADB Commands (Root Required) For devices where manual methods fail, dedicated software

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 Connect your phone to the PC

5457#*#xxxx# (Replace xxxx with your model number, e.g., 855 for G3) Copied to clipboard 5457#*#xxxx# (Replace xxxx with your

Many brands provide hidden dialer codes to quickly toggle USB modes. Open your phone's dialer and try the following:

Check on your PC; the device should now appear under Ports (COM & LPT) as a "Qualcomm HS-USB Android Diagnostics" port. 🧰 All-in-One Tools (Third-Party)

DIAG mode is essential for performing advanced technical tasks like , baseband fixing , QCN reading/writing , and network unlocking . 🛠️ Prerequisites