Checks if the screen correctly adjusts brightness levels. 2. Samsung Members App (Comprehensive Tool)
[Your Name] Affiliation: [Your Institution/Company] Date: April 17, 2026 galaxy diagnostics screen tool fixer
Perform the drawing test. Result: If lines are smooth, the screen is fine. It's an app issue. Checks if the screen correctly adjusts brightness levels
| Device Model | Initial False Fail | After GDS-TF | Fix Persistence (reboots) | | :--- | :--- | :--- | :--- | | SM-G998B (S21 Ultra) | 12 | 1 | 8/10 | | SM-S901E (S22) | 9 | 0 | 10/10 | | SM-A536B (A53) | 7 | 0 | 9/10 | galaxy diagnostics screen tool fixer