Q: Why is there a thin gray line at the top of my home screen on iPhone 6plus?

Hey Alliemac71639,

Thanks for the question. I understand you are experiencing issues with your iPhone 6 Plus display. The following resource outlines some great troubleshooting steps::

iPhone: Hardware troubleshooting

http://support.apple.com/kb/TS2802

Display image issues

This can include bright or dark pixels, lines in video, or sections of video missing.

 

1. Try turning iPhone off and then on again.

2. Verify the issue is not content related, by viewing different content.

3. If the image is too dark, adjust the brightness. In General Settings choose Brightness and Wallpaper and slide the slider.

 

[…]

 

My issue is still not resolved. What do I do next?

Contact Apple Support.

Thanks,

Matt M.