Enable Or Disable Diag Mode on Qualcomm device using ADB

Diagnostic Mode allow to test out the different working process of hardware and software on a Qualcomm device.

Some tools required to enable Diag connection in order to fix null/invalid IMEI or flash QCN file or EFS file as well.

This guide will explain how to enable Diagnostic Mode (Diag Mode) on an Android phone which runs on a Qualcomm processor.

1.Dial Number  *#*#717717#*#*  orO*#*#13491#*#*

 on some phones like Alcatel can work also ###2324#  or *#2618#

If this code combination will be accepted by phone, on phone lcd will show "Diag Protector off"  message.

Now, you have Enabled Or Disabled Diag Mode on Qualcomm device.

If this does not work, then try the second method.

2.Use ADB connection

• Your phone should be Rooted first for the second method.
• Install Terminal Emulator Apk on your phone.
• Connect the device to the computer.
• Enable USB Debugging on your handset via the Developer Options.
• Now, open the terminal emulator.
• Type the following commands in adb shell:

    adb devices

   adb shell

   su

   setprop sys.usb.config diag,adb

We hope that this guide is helpful to you and you have successfully enabled or disabled the Diag Mode on any Qualcomm devices.