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

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

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) 5457#*#xxxx# (Replace xxxx with your model number, e

*#7284# : (Older models) Select for USB and DM+MODEM+ADB . *#9090# : Select DM/DUM over HS-USB . LG ##3424# 5457#*#xxxx# (Replace xxxx with your model number, e

For devices where manual methods fail, dedicated software can automate the process: 5457#*#xxxx# (Replace xxxx with your model number, e

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)