Regardless of carrier support, all iPhone 8 Plus models have a 5.5 (diagonal) widescreen multitouch True Tone LED-backlit 1920×1080 native resolution Retina HD display (401 ppi, 625 cd/m2) and a taptic-engine powered solid state clickless Home button.

The iPhone 8 Plus has three cameras. It has dual rear 12-megapixel 4K cameras (one wide-angle with an f/1.8 aperture and one telephoto with a f/2.8 aperture) that use software to emulate a 2x optical zoom as well as a 10x digital zoom. These rear cameras also provide portrait mode and lighting software in addition to optical image stabilization, a 6-element lens, and wide color capture. The front FaceTime HD camera is 7 megapixels and supports 1080p video capture. The cameras support motion tracking and offer augmented reality support, too.

The iPhone 8 Plus uses an aerospace-grade aluminum alloy case reinforced by steel and has a glass front and back. It is splash, water, and dust-resistant (IP67), but not water-proof, and it has stereo speakers and a Lightning port. It is offered in three metallic color options — gold, silver, or a dark Space Gray.

Internally, the iPhone 8 Plus is powered by a 64-bit Apple A11 Bionic processor with six cores — two performance cores and four high-efficiency cores — and has 3 GB of RAM, as well as 64 GB or 256 GB of flash storage. It also supports 802.11ac Wi-Fi with MIMO, Bluetooth 5.0, LTE (4G), and NFC for Apple Pay.