Hello kabute,
Thanks for your post to Apple Support Communities. We see your iPhone screen is showing green and with lines. First, we'd recommend force restarting it to try to get it back to a normal display.
Force restart iPhone - Apple Support
1. Press and quickly release the volume up button.
2. Press and quickly release the volume down button.
3. Press and hold the side button.
4. When the Apple logo appears, release the side button.
If your iPhone display still shows in that manner, we'd next recommend having it looked at physically by a technician. You can find service locations near you here: Find Locations - Apple
We also have tips to get your iPhone ready for service, if you do need to take it in:
Get your iPhone, iPad, or iPod touch ready for service - Apple Support
Best regards.