This chapter addresses basic common Iphone screen faults, including cracked glass, touch unresponsiveness, backlight failure, and screen discoloration. It teaches targeted repair methods: replacing the outer glass with a separator machine, troubleshooting touch layer damage, repairing backlight circuit faults, and solving discoloration caused by water damage. It also explains how to distinguish between glass-only damage and panel damage to select cost-effective repair solutions. Learners will be able to handle 80% of basic screen faults independently.