About 15 minutes ago the corners of my screen on my iPhone 5s are flickering. I'm

Hi there Tlcayers,

Welcome to Apple Support Communities.

The article linked below provides troubleshooting tips that can help you resolve the flickering sections of screen issue with your iPhone 5s.

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.

Cheers,

-Jason