Cracked screens can be misleading. If your phone still displays images clearly and responds to touch, only the outer glass might be damaged. However, if the display shows discoloration, black spots, flickering, or doesnt respond to touch, the LCD/digitizer is likely damaged and needs full screen replacement. Understanding the difference is crucial because glass-only repairs are cheaper and faster, while mobile screen full replacements cost more. A professional technician can assess the extent of the damage and suggest the most cost-effective and safe repair solution to restore your device's performance and appearance.