*#0808# : Select or RMNET + DM + ADB and tap OK .

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

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)

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

DIAG mode is essential for performing advanced technical tasks like , baseband fixing , QCN reading/writing , and network unlocking . 🛠️ Prerequisites

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

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

*#0808# : Select or RMNET + DM + ADB and tap OK .

For devices where manual methods fail, dedicated software can automate the process: *#0808# : Select or RMNET + DM + ADB and tap OK

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) 855 for G3)

This guide provides a comprehensive overview of how to enable on various Android devices using common methods and tools. *#0808# : Select or RMNET + DM + ADB and tap OK

DIAG mode is essential for performing advanced technical tasks like , baseband fixing , QCN reading/writing , and network unlocking . 🛠️ Prerequisites

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