"watermark" on top of my screen

[Android Central Question]

I bought my new Ulefone Power 3S today and it has this watermark on top. it's really annoying and I need help to remove it

 

[Mooncatt]

That depends on what exactly is showing up. Could you please create an account here so you can respond to this thread and upload a screenshot? Or at the very least, describe what this watermark looks like?

 

[Daste]

Hey there,I made an account and here is a screenshot of the watermark

 

[Mooncatt]

Welcome to the site and thanks for responding. Do you have any idea what that says? I tried running it through a translator, but nothing sensible came up. Once we figure out what it is saying, that may be a clue on where it came from and how to remove it.

Also, did you buy this from an authorized retailer, second hand, or some other way? Did you have to set up the phone from scratch?

In the mean time, I'll check with some other long term members here to see if they have any other ideas.

 

[mustang7757]

Looks like a ad , do they have a app download that maybe installed this?

 

[Daste]

I bought it today and it was on 7.1.1 but there was an update and I downloaded it, I bought it on Ulefone site.

 

[Daste]

Looks like a ad , do they have a app download that maybe installed this?

Nope,fresh start

 

[mustang7757]

Nope,fresh start

You use chrome for internet?

 

[Daste]

You use chrome for internet?

Yes

 

[mustang7757]

Re: "watermark" on top of my screen

Yes

Maybe try go into settings and clear any notification or downloads and see if what happens.
Edit: clear in chrome

 

[belodion]

See this on XDA: https://forum.xda-developers.com/general/help/ulefone-power-3s-problem-t3794521/page1

 

[Daste]

Welcome to the site and thanks for responding. Do you have any idea what that says? I tried running it through a translator, but nothing sensible came up. Once we figure out what it is saying, that may be a clue on where it came from and how to remove it.

Also, did you buy this from an authorized retailer, second hand, or some other way? Did you have to set up the phone from scratch?

In the mean time, I'll check with some other long term members here to see if they have any other ideas.

I have tried searching this error but I'm clueless what it means

 

[Daste]

See this on XDA: https://forum.xda-developers.com/general/help/ulefone-power-3s-problem-t3794521/page1

Thanks

 

[Daste]

This method worked for me to get rid of the 未写入 tee key message. With adb platform tools use this command line :

adb shell pm uninstall -k --user 0 com.mediatek.factorymode

It deleted the factory mode package and stopped displaying the message