The half-black-screen symptom on an iPhone X looks dramatic but is, in most cases, a cheap repair. The OLED panel itself rarely fails unevenly; instead, the display flex cable running under the logic-board bracket has torn or come loose, and one half of the panel loses its data path.
Three patterns shops actually see
| Pattern | Likely cause | Repair |
|---|---|---|
| Bottom half black, top half responsive | Torn display flex | Display flex replacement |
| Vertical line through the middle, half the screen works | Damaged OLED ribbon | Full display assembly |
| Flickering / strobing on the lower half | Loose connector under the bracket | Reseat + test |
Confirming the cause before quoting
Open the phone, disconnect the battery, and reseat the display connector on the logic board. If the half-black pattern changes or moves after a reseat — say, the bottom half black becomes a vertical line — the connector is the problem. Replace just the bracket screws to torque and the job is a 15-minute fix.
If reseating does nothing and the fault sits exactly at the horizontal midline of the display, the display flex inside the panel has torn. On the iPhone X this flex is part of the display assembly — you replace the panel as a unit, not the flex separately.
Why the torn-flex pattern is so common on this model
The iPhone X was Apple's first all-OLED iPhone with a folded flex at the bottom of the panel. The design works well but has a known fatigue point where the flex bends around the bracket. Five years of thermal cycling is enough to crack it, and a drop on the lower-right corner is the most common trigger. Every replacement panel is engineered to last longer, but the underlying physics stays the same.
Stock and cross-sell
If you are already inside an iPhone X for a half-black display, the customer's battery is almost certainly due for replacement too. Bundle pricing on the battery + display turns a single-ticket repair into a higher-margin walk-out. Browse the full iPhone X parts collection.
FAQ
Can the OLED be saved? Almost never on the iPhone X — the flex is integrated into the panel.
Does Face ID survive a display swap? Yes if Face ID is transferred correctly; the Face ID components are not on the display flex.