Hello raunaq92,
Thanks for visiting the Apple Support Communities and asking about your iPhone SE and the display. I am happy to offer an article to check this out with you.
I recommend trying some troubleshooting here, specifically:
Get help with the display on your iPhone, iPad, or iPod touch - Apple Support
If your display, or part of your display, doesn't respond, you might need to force restart your device:
On an iPhone 6s and earlier, iPad, or iPod touch: Press and hold both the Home and the Top (or Side) buttons for at least 10 seconds, until you see the Apple logo.
and if it still occurs, try this:
If your display is too sensitive or doesn't respond to touch like expected:
- Restart your device.
- Make sure your screen is clean and free of any debris or water.
- Disconnect any Lightning accessories.
- Remove any cases or screen protectors.
If your display continues being too sensitive or completes actions without being touched, contact Apple Support.
If you still have issues, I recommend contacting AppleCare, or having your device checked at an Apple Authorized Service Provider or Apple Store.
If you don't see your issue listed or need more help, contact Apple Support or take your device to an Apple Store or Apple Authorized Service Provider.
Thanks and have a wonderful day.