Tap Touch .
on the network, maintaining hardware health is essential for longevity. This phone features multiple "secret" and built-in diagnostic tools that allow you to troubleshoot issues with the screen, sensors, and connectivity without needing third-party software. 1. The Hidden Hardware Diagnostic Menu galaxy s5 us cellular diagnostics tool
Test individual pixel colors (Red, Green, Blue) to check for dead pixels or burn-in. Tap Touch