What is "du_test.txt" file

[Android Central Question]

Mobile phone model - Oppo K1.
WPS office app is showing a notification about a newly detected/received file named "du_test.txt" again and again when I turned ON or OFF data in my phone Oppo K1.
Also, after clicking on the notification, a pop up windows opens with wps app showing that "This file is renamed, moved, cleared or deleted by other program'.
I am worry about the security & privacy of my mobile device. Please clarify what is this file?
Is it a virus file ?
My antivirus is not detecting any virus or malware in my phone.
Why this is showing only in WPS office app ?not in other apps or file manager ?

Please help urgently.

I have done factory resetting but still problem persisting again.

 

[mustang7757]

Hi, welcome to Android Forums

I'd like to recommend creating a account so me or other members can assist you, as guest have limitations in replying here and if we need further Information to communicate with you.

I'll provide a link to register, please come back to your post so we can further assist you . Thank you
https://forums.androidcentral.com/showthread.php?t=409154

 

[B. Diddy]

Welcome to Android Central! "DU" might refer to the app developer that makes various useless snake oil apps like DU Battery Saver. Do you have any battery saver or "RAM booster" apps installed?

 

[Rukbat]

A .txt file is just plain text. Office picked it up somehow, but another app created it - and then deleted it. If you open WPS, you might find a "recovery" for it, or you may not, but that should clear up the message. (I'd be more concerned that WPS, being made by a Chinese company [Kingsoft] was the problem.)