Height, Width, and Depth
The iPhone 8 Plus measures 158.4 millimeters (6.23 inches) in height, 78.1 millimeters (3.07 inches) in width, and 7.5 millimeters (0.30 inches) in depth. These dimensions position it as a large but thin smartphone for its generation, with a tightly integrated design that aligns with Apple’s enclosure engineering at the time. The compact height remains manageable for single-hand use for many users, while the width may require two-handed operation for some.
Physical Measurements in Context
Depth contributes significantly to the overall pocketability and grip of the device. At 7.5 millimeters, the iPhone 8 Plus is thicker than many ultra-slim flagships today but was typical for 2017 devices that housed sizable batteries and dual-camera systems on the back. The relationship between height and width yields an aspect ratio close to the common 16:9 reference, with a diagonal display of 5.5 inches that delivers an expansive yet balanced visual field.
Weight and Build Materials
Apple rates the iPhone 8 Plus at 202 grams (7.1 ounces), making it heavier than many aluminum-bodied contemporaries due to the stainless steel frame and glass back. The weight distribution is balanced across the chassis, aided by the slightly tapered edges that meet the display. Glass on both front and back enables wireless charging and improves RF performance but adds to the overall mass compared with plastic-sandwiched designs.
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Height | 158.4 mm (6.23 in) | Apple Spec Sheet |
| Width | 78.1 mm (3.07 in) | Apple Spec Sheet |
| Depth | 7.5 mm (0.30 in) | Apple Spec Sheet |
| Weight | 202 g (7.1 oz) | Apple Spec Sheet |
| Display Size | 5.5 inches (diagonal) | Apple Spec Sheet |
Fit, Gasket, and Pocketability
Fit considerations for the iPhone 8 Plus revolve around its 7.5 mm depth and 158 mm height, which can challenge standard slim cases and pocket seams. Protective shells that add 2 to 4 millimeters may feel bulky, whereas ultra-thin cases preserve much of the original form. The gasket around the Lightning port and buttons maintains dust and splash resistance, and the aluminum frame provides structural rigidity without excessive flex, contributing to a premium tactile experience when held.
Display Size and Usability
Screen Dimensions and Reach
With a 5.5-inch display, the iPhone 8 Plus offers noticeably more on-screen area than the 4.7-inch iPhone 8, improving media consumption and multitasking. The relatively high pixel density ensures text and images remain sharp, while the 1334-by-750 resolution is optimized for the LED-backlit LCD panel. For users with larger hands, the increased width may encourage two-handed use, especially for gaming and navigation through dense interfaces.
Comparative Size Overview
Positioned between the smaller iPhone 8 and larger iPhone X in Apple’s lineup, the iPhone 8 Plus represents a mid-to-large segment of the 2017 portfolio. Its physical profile compares closely to flagship slabs of the era, balancing premium materials with a form factor that remains serviceable through updated iOS software support. The table below summarizes how key size metrics align with common usage scenarios.
| Metric | Estimate or Range | Context |
|---|---|---|
| Height | 158.4 mm | Near-universal for 5.5-inch class devices |
| Width | 78.1 mm | May require two-handed operation |
| Depth | 7.5 mm | Typical for 2017 smartphones with glass backs |
| Weight | 202 g | Heavier due to stainless steel and glass construction |
| Display | 5.5-inch LCD | Larger than iPhone 8, smaller than iPhone X |
Case Compatibility and Handling Tips
Case compatibility for the iPhone 8 Plus is extensive, with many third-party options available in varying materials and thickness profiles. When choosing a case, consider how the 7.5 mm depth affects lip extension on the display and camera module; some designs add bulk around the camera, which can impact stability on flat surfaces. For pocketability, softer TPU cases reduce overall thickness and improve comfort, while rugged shells may increase depth by 3 to 5 millimeters, affecting fit in tighter jeans or small bags.
Portability and Everyday Use
In everyday use, the length of the iPhone 8 Plus makes it suitable for horizontal viewing of videos and photos, though it may slide forward in a shallow pocket due to its flat glass back. Holding the device with two thumbs is common during extended sessions, and the layout of controls along the frame remains consistent with Apple’s ergonomic approach. The balance between screen size and chassis width ensures that media consumption remains immersive without becoming unwieldy for most users.
Summary and Practical Takeaways
Understanding the length and overall size of the iPhone 8 Plus helps you gauge fit, comfort, and compatibility with accessories. At 158.4 mm tall and 7.5 mm thick, it is a large but manageable device for 2017, with weight and materials that convey a premium feel. Comparing these dimensions to cases, pockets, and daily workflows clarifies whether the iPhone 8 Plus suits your lifestyle, and the measurements above remain dependable for long-term planning and upgrades.