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

##3424# then select or use a service tool like XTC 2 Clip. 💻 Method 2: ADB Commands (Root Required)

*#7284# : (Older models) Select for USB and DM+MODEM+ADB . *#9090# : Select DM/DUM over HS-USB . LG ##3424#

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) ##3424# then select or use a service tool like XTC 2 Clip

Before attempting to enable DIAG mode, ensure you have the following: Install Qualcomm HS-USB QDLoader 9008 drivers for your PC. ADB Tools: Ensure you have ADB and Fastboot installed.

Go to Settings > About Phone and tap Build Number 7 times, then enable USB Debugging in Developer Options . 📱 Method 1: Dialer Codes (No Root) LG ##3424# Check on your PC; the device

This guide provides a comprehensive overview of how to enable on various Android devices using common methods and tools.

5457#*#xxxx# (Replace xxxx with your model number, e.g., 855 for G3) Go to Settings > About Phone and tap

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