Spots on phone screen can appear for several reasons, including dead pixels, pressure damage, moisture exposure, overheating, or internal display issues. Black spots often indicate damaged pixels or screen cracks inside the display, while bright or colored spots may result from stuck pixels. Water damage can also create blurry patches or discoloration. In some cases, dirt trapped under a screen protector may look like screen spots. Identifying the type of spot helps determine whether the issue is temporary or requires professional repair.