If you are the owner of the QHFN E4 and you want to know; how to enable USB debugging on your QHFN E4. Here we will guide you how to enable USB debugging mode on your E4. using Developer Options, you can easily customize animations, background processes, USB cable settings, etc.
Quick Steps to enable USB debugging Mode in your QHFN E4
First of all, go to Settings your QHFN E4
Now, you will see Settings option >>>> select About phone then choose >>>> Software Information.
Now, Scroll down your screen and find the Build Number your QHFN E4, now tap the Build number 7 to 10 times until you will see a pop-up message that says "Developer mode has been enabled". (see attached below image)
After 10 minutes, you will see a popup message "you are now a developer" on your QHFN E4
Now, you will see the Developer options menu under Settings via Tap on the Back button.
Then, You will click on Developer options. Slide the "Developer Options" button to "On".
Then scroll down your phone screen and turn on "USB debugging". You will see the messages "Allow USB Debugging", click the "OK".
Now, you have successfully enabled USB debugging mode on QHFN E4.
Note: We are not responsible for any damage to your QHFN E4 while doing anything with USB Debugging. You must create a backup of all files and save them in a safe location.