中国語のテキストの削除 "未输入Google Key Tee Key"透かしの画面 -- custom-roms フィールド android 関連 問題

After flashing a custom ROM, there is a watermark in the top-right of the screen saying

xe6x9cxaaxe5x86x99xe5x85xa5google keyxe5x92x8ctee key

I've googled it and have tried several of the solutions suggested, but none have worked. Interestingly, most people get a slightly different variation of this message, in red.

I've removed "FactoryTest" from my phone, but do not have com.mediatek.factorymode as some have suggested. I've messed around with my IMEI keys, this did not help. The message also still appears even with the SIM card removed.

Where on the phone could this be stored? My phone is rooted, so if I could locate the file responsible, I could easily delete it.

1. Download Minimal ADB and Fastboot on the computer

2. Plug in the phone into the computer, but keep the phone on

3. On the computer, open the terminal/command prompt

4. Enter these commands

   adb devices adb shell pm list packages pm uninstall --user 0 com.mediatek.factorymode 

5. Restart the phone and the watermark will be removed

You can kill/uninstall the sdrpmbFloat view service with root permissions. You should be able to go to Developer Options > Active Services to disable the service.

Source: https://forum.xda-developers.com/t/ulefone-power-3s-problem.3794521/post-77513923