Spots on a phone screen can appear for several reasons, including dead pixels, pressure damage, moisture, internal display problems, or physical impact. Small black dots may indicate dead pixels, while bright or colored spots can sometimes result from damaged display components. If the spots appeared after dropping or pressing the phone, the screen may have internal damage even if the glass looks normal. In some cases, Spots on the phone screen can also develop because of moisture entering the display assembly. Restarting the phone and checking it under different brightness levels can help identify the issue. If the spots remain unchanged, professional inspection or screen replacement may be necessary.