The Samsung Galaxy Z Fold 4 features an outer display (cover screen) that serves as a practical alternative to the larger inner foldable screen. Here’s a detailed description of its outer LCD:
Key Specifications of the Outer LCD:
- Display Type:
- Dynamic AMOLED 2X (Advanced, vibrant, and energy-efficient).
- 120Hz adaptive refresh rate (smooth scrolling and responsiveness).
- Size & Aspect Ratio:
- 6.2-inch diagonal (measured corner-to-corner).
- Tall & narrow aspect ratio (23.1:9) – Optimized for one-handed use.
- Resolution: 2316 x 904 pixels (~ 402 PPI for sharp clarity).
- Design & Functionality:
- Flat, edge-to-edge design with a centered punch-hole camera.
- Corning Gorilla Glass Victus+ for scratch and drop resistance.
- Functions as a full smartphone display when the device is folded.
- Features:
- HDR10+ support for vivid colors and contrast.
- Always-On Display (AOD) for quick notifications/time.
- High brightness (~1,300 nits peak) for outdoor visibility.
Comparison with Inner Display:
| Feature | Outer Display | Inner Display (Main) |
|---|---|---|
| Size | 6.2″ | 7.6″ (unfolded) |
| Refresh Rate | 120Hz | 120Hz (1-120Hz adaptive) |
| Resolution | 2316×904 | 2176×1812 (Foldable) |
| Glass | Gorilla Victus+ | Ultra-Thin Glass (UTG) |
Use Cases:
- Quick tasks (calls, messages, social media).
- One-handed convenience when folded.
- Seamless app continuity when unfolding.
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