*#7284# : (Older models) Select for USB and DM+MODEM+ADB . *#9090# : Select DM/DUM over HS-USB . LG ##3424#
Many brands provide hidden dialer codes to quickly toggle USB modes. Open your phone's dialer and try the following: *#7284# : (Older models) Select for USB and DM+MODEM+ADB
Go to Settings > About Phone and tap Build Number 7 times, then enable USB Debugging in Developer Options . 📱 Method 1: Dialer Codes (No Root) Open your phone's dialer and try the following:
5457#*#xxxx# (Replace xxxx with your model number, e.g., 855 for G3) If dialer codes don't work, you can use
DIAG mode is essential for performing advanced technical tasks like , baseband fixing , QCN reading/writing , and network unlocking . 🛠️ Prerequisites
This guide provides a comprehensive overview of how to enable on various Android devices using common methods and tools.
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