getting blue lines on the screen after update when scrolling up and down (only on darkmode)

Hey there chandra15,

Thanks for reaching out to Apple Support Communities. I understand you’re seeing some blue lines on your iPhone display. I’ll be happy to help with this.

I didn’t see the blue lines in the video you provided but if you’re having issues with your iPhone display, these steps may resolve this:

1. Restart your device.
2. Disconnect any Lightning or USB-C accessories. If your screen works after removing an accessory, try using a different outlet, cable, or charger.
3. Remove any cases or screen protectors.

If that doesn’t help, make sure your iPhone is completely up to date as well. This link will walk you through the process:

Update your iPhone, iPad, or iPod touch

If your iPhone is already up to date, reinstall iOS and see if this has any impact on this. Be sure to back up before hand:

How to back up your iPhone, iPad, and iPod touch

If you can't update or restore your iPhone, iPad, or iPod touch

Regards.