Note: This may be blocked on certain carriers like Verizon or Sprint.
If you cannot access the secret codes (some carriers block them), Samsung officially releases a tool on the Galaxy Store (not Google Play). galaxy diagnostics screen tool fixer
Depending on your model and carrier, you can access these tools in three ways: Note: This may be blocked on certain carriers
Before you assume your screen is physically broken, ask yourself: Is the glass cracked? If not, the Galaxy Diagnostics Screen Tool Fixer may resolve the following issues: galaxy diagnostics screen tool fixer
Common hardware failures that require a physical screen replacement: