Display size and dimensions overview
The iPhone 8 Plus has a 5.5-inch display measured diagonally, with an overall device height of approximately 6.23 inches (158.4 mm), width of about 3.06 inches (77.9 mm), and depth of roughly 0.29 inch (7.3 mm). The display itself offers a viewable area slightly smaller than the outer edges due to bezels, and the screen uses LCD technology with a 1920×1080 resolution at 401 pixels per inch (ppi).
iPhone 8 Plus display specifications
Apple classifies the iPhone 8 Plus display as a 5.5-inch Retina HD LCD, featuring multi-touch capabilities, wide color support (P3), and high dynamic range (HDR) for compatible content. Below are verified specifications that describe the screen and its measurable traits.
Measured attributes table
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Display size (diagonal) | 5.5 inches | Official specs |
| Resolution (width × height) | 1920 × 1080 pixels | Official specs |
| Pixel density | 401 ppi | Official specs |
| Technology | LCD (IPS), Retina HD | Official specs |
| Aspect ratio | 16:9 | Official specs |
| Typical max brightness | 625 nits (typical) | Technical documentation |
| Color gamut | P3 wide color | Technical documentation |
Practical measurements and comparisons
In real-world terms, 5.5 inches is comparable to the span of an adult hand from the tip of the thumb to the tip of the little finger on an average hand. The iPhone 8 Plus is noticeably taller than earlier 4.7-inch iPhone models, offering more screen area for videos, photos, and multitasking while remaining manageable for one-handed use with reachability features enabled.
Bezel design and actual viewable area
Although the display is labeled as 5.5 inches, the visible area is reduced by the front glass and narrow bezels surrounding the screen. The home button with Touch ID sits below the display, and the screen extends edge to edge with minimal gaps, giving a cohesive look without a chin at the bottom on most orientations.
Context within Apple product lineup
When compared with the standard iPhone 8 (4.7-inch display) and the iPhone X (5.8-inch display), the iPhone 8 Plus occupies the middle ground in Apple's 2017 lineup, balancing screen size, battery life, and portability. Its larger display relative to the 8 makes it preferable for media consumption, while the dual-lens camera setup is shared with the iPhone X.
Display performance and user experience
The LCD technology provides consistent color and viewing angles, and the 16:9 aspect ratio aligns well with video playback and home screen layouts. While not as edge-to-edge as newer OLED models, the 5.5-inch screen remains sharp and readable, with text and icons rendered at a high pixel density for crisp visuals.
Physical dimensions summary
For users who care about exact sizes, the iPhone 8 Plus measures 158.4 mm in height, 77.9 mm in width, and 7.3 mm in depth, weighing around 202 grams. These dimensions affect fit in cases, pocketability, and overall ergonomics, making the 5.5-inch display feel substantial without being unwieldy.