##3424# then select or use a service tool like XTC 2 Clip. 💻 Method 2: ADB Commands (Root Required)
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 ##3424# then select or use a service tool like XTC 2 Clip
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
DIAG mode is essential for performing advanced technical tasks like , baseband fixing , QCN reading/writing , and network unlocking . 🛠️ Prerequisites Copied to clipboard Check on your PC; the
5457#*#xxxx# (Replace xxxx with your model number, e.g., 855 for G3)
*#7284# : (Older models) Select for USB and DM+MODEM+ADB . *#9090# : Select DM/DUM over HS-USB . LG ##3424#