Hi, @Cde3Cvr Thank you for the screenshot, I would suggest resetting all settings on your device.
Settings>General>Reset all settings
That should go away unless it causes by a third-party app or a hardware problem.
Please let me know if you have any questions. Thank you!
@Cde3Cvr if that is the case i would recommend booting up the device on safe mode. To boot up on safe mode please follow the steps below:
1) Hold power button
2) Long Press Power button icon on the screen
3) Press Safe Mode icon on the screen
If problem persist on Safe mode that means you the device have a hardware issue it could be the case or the power button.
Please let me know if you have any questions, Thank you for your patience!