A stuck pixel occurs when a transistor controlling a single pixel becomes stuck in the "on" position, causing it to display continuously in one colour. Unlike dead pixels, stuck pixels still receive power and can potentially be repaired using various home methods, making them less catastrophic than permanent screen damage, though they remain distracting depending on their location.

The most common causes are physical damage, power surges, extreme temperature exposure, or simply device age. Three repair methods exist: software tools (such as JScreenFix or PixelHealer) that cycle colours to reset the transistor, pressure application with a soft-tipped tool, and gentle heat application—though the latter two carry risk of additional damage. A single stuck pixel will not spread to others, but multiple pixels may indicate a manufacturing defect. Warranty replacement typically depends on whether the issue is isolated or recurring.