Q: What is the white horizontal line and red vertical line on my brand new ipad mini?

Hi Tolmivooz,

So the lines didn't appear until you were into the setup?

Does the orientation of the lines change when you rotate the screen?

Thanks for trying the restart and reset. Please see if a restore helps.

Get help with the screen on your iPhone, iPad, or iPod touch - Apple Support

If you see lines, missing sections, discoloration, or poor image quality

 

1. Try to restart your device. If you can't restart, reset your device.
2. If restarting or resetting doesn’t fix the issue, restore your device.
3. If you still see the issue after you restore, contact Apple Support.

Best,

Nubz