How to turn on Safe Mode
Step 1. Press and hold the hold Volume Down key + Side key.
Step 2. Select Power off.
Step 3. After the screen turns off, press and hold Volume Down key + Side key at the same time.
Step 4. Once the Samsung logo appears on screen, release the Side key, while holding the Volume down key.
Step 5. When Safe mode appears on the lower left corner of the screen, release the key.
If the issue is resolved in Safe Mode, it suggests that a third-party app is causing it.