It might be a bug .Try factory resetting your device. if it still doesn't work ,
Kindly send a message to Samsung Using 'ask a question' in support.to do that click support >scroll down>click ask a question >select others>type your issue>upload some proof >click the icon one the right corner to send it .they will definitely help you.
If my answer was helpful please click the 3 dots on the right and click accept solution 🙂😊
1. Make sure of a high quality charger. 2. Keep the screen clean. 3. Force restart your phone. 4. Take breaks from using the screen. 5. Replace your phone tempered glass. 6. Take your phone to a Samsung Service Centre.
This might be a hardware issue. You may want to Factory Reset your Galaxy device. But make sure to have all the backup files before performing it.
Use the steps below to perform Factory Reset on your Galaxy device. Go to Settings > General & Backup and reset > Factory data reset > Reset device > Tap Delete all.
If not, visit a nearby Samsung Service Center for further assistance.
Be sure to click the 3 dots and " ✓ Accept as Solution" when you find an answer that works for you.
Doesn’t respond Flickers Jumps Flashes Shows dead pixels Stays blank
Step 1: Check your phone's screen
Important: After you try each recommended solution, check to find whether it fixed your issue.
Make sure that your screen isn't cracked, chipped, or damaged.If you have a case or screen protector, take it off.If you're wearing gloves, take them off.If you've put any stickers over the screen or sensors, peel them off.Make sure that your screen is clean.
Step 2: Try these troubleshooting steps
Restart your phone Find out whether an app causes your problem Test the affected part of your screen Turn off developer options
Step 3: Use advanced troubleshooting
Consider resetting your phone to factory settings Contact your device manufacturer
