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 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
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) Connect your phone to the PC
Go to Settings > About Phone and tap Build Number 7 times, then enable USB Debugging in Developer Options . 📱 Method 1: Dialer Codes (No Root) Copied to clipboard Check on your PC; the
Many brands provide hidden dialer codes to quickly toggle USB modes. Open your phone's dialer and try the following:
##3424# then select or use a service tool like XTC 2 Clip. 💻 Method 2: ADB Commands (Root Required)