iPhone 8 size at a glance
The iPhone 8 is a compact-to-midsize smartphone. In-hand, it feels similar to earlier 4.7-inch iPhones. Its physical dimensions are height 138.4 mm (5.45 in), width 67.3 mm (2.65 in), depth 7.3 mm (0.29 in), and it weighs 148 g (5.2 oz). The display measures 4.7 inches diagonally with a 1334×750 resolution. Below, we break down these measurements, explain what they mean for fit, cases, and comfort, and compare the iPhone 8 to older and newer models to clarify its size in today’s context.
Physical dimensions and weight
Height, width, and depth
Height: 138.4 mm / 5.45 in. Width: 67.3 mm / 2.65 in. Depth: 7.3 mm / 0.29 in. These figures reflect the glass front, aluminum frame, and battery layout. The relatively slim depth helps the device fit standard pocket profiles, though glass backs add fragility. The small increases in height and width over the iPhone 7 are minimal, making changes in-hand feel subtle.
Weight
Weight: 148 g / 5.2 oz. The aluminum unibody and components contribute to a firm, dense feel without being heavy for its class. Compared with plus-size models, the iPhone 8 is noticeably lighter, which can affect one-handed use and balance when holding the phone for extended periods.
Table: verified dimensions and weight
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Height | 138.4 mm (5.45 in) | Apple Spec Sheet |
| Width | 67.3 mm (2.65 in) | Apple Spec Sheet |
| Depth | 7.3 mm (0.29 in) | Apple Spec Sheet |
| Weight | 148 g (5.2 oz) | Apple Spec Sheet |
| Display size | 4.7 inches (diagonal) | Apple Spec Sheet |
| Display resolution | 1334 x 750 pixels | Apple Spec Sheet |
Display and screen size
The iPhone 8 has a 4.7-inch diagonal display with a 1334×750 resolution. Screen size is measured by the visible area between bezel edges. While the physical panel is 4.7 inches, the viewable area is slightly smaller due to small bezels. Text and app content scale at 1x and 2x; no native 3x rendering is available (compared with Plus and Max models). This makes the iPhone 8 suitable for comfortable one-handed use, though users with larger hands may prefer larger phones for reachability.
How the iPhone 8 fits cases and pockets
Because the iPhone 8’s dimensions are close to many older 4.7-inch iPhones, case compatibility is high across generations. Simple, slim cases typically add 1–2 mm in each direction and very little to overall thickness. Tempered glass screen protectors preserve the 7.3 mm depth. The slim depth and moderate width make it pocket-friendly, though tight denim or bulky seams may require a slim profile case. For one-handed use, consider grips or slightly curved edges that reduce finger strain.
Comparison with other iPhone sizes
Compared with the iPhone 7, the iPhone 8 is virtually identical in height, width, and depth, with minor internal upgrades. Versus the iPhone 8 Plus, the difference is about 11 mm in height and 11 mm in width, making the Plus noticeably larger both in display area and overall footprint. Newer iPhones with edge-to-edge displays, such as the iPhone X and beyond, are taller and often wider; even compact models like the iPhone 13 mini are slightly taller and wider than the iPhone 8, though thinner bezels change perceived size. The iPhone SE (2nd and 3rd gen) matches the height and width of the iPhone 8 while adopting newer internals and camera designs.
Practical implications of the dimensions
- One-handed use: 67.3 mm of width is near the threshold where one-handed tapping becomes comfortable for many users; pairing with Reachability (double-tap Home) helps.
- Cases and screen protectors: plentiful options exist because the chassis aligns with multiple 4.7-inch iPhones.
- Pocket fit: slim depth and moderate width generally fit standard front pockets; sitting on the phone is unlikely to cause significant bulge.
- Camera bump: modest; still noticeable on flat surfaces, so case lip protection is advisable.
Summary and recommendations
The iPhone 8 measures 138.4 mm tall, 67.3 mm wide, and 7.3 mm thick, weighing 148 g. It carries a 4.7-inch display and fits comfortably in many hands and pockets, with ample case compatibility. Its dimensions place it between older 4.7-inch iPhones and larger Plus models, making it a balanced choice for users who want a familiar size with modern internals. For grip and comfort, consider a slim case or wrist grip, and prioritize screen protection given glass front and back. If reachability is challenging, explore accessibility settings or larger models, but for many users the iPhone 8 remains a practical, mid-size option in today’s lineup.