The flex cable runs through the hinge, transmitting display and touch signals between the two halves.
Common issues: flickering screen or sudden touch loss when folding/unfolding.
Replacement process: remove display assembly, detach hinge, remove old cable, install new one, reassemble.
Requires skilled technician and specialized tools (P2 screwdriver, adhesive, tweezers, glass separator).
Part cost is around $20–40; repair time 60–120 minutes.
Post-replacement testing: folding cycles, touch response, and display stability.
DIY not recommended without experience to avoid damaging the hinge mechanism.