From the front, the iPhone 8 and the iPhone 8 Plus look identical to the iPhone 7 and the iPhone 7 Plus, continuing to offer the same 4.7 and 5.5-inch display sizes with thick bezels at the top and bottom of the device.
At the top of the device, there's a cutout for the front-facing camera, speaker, and accompanying sensors, and at the bottom of the device, there continues to be a capacities "solid state" Home button that uses the Taptic Engine to mimic a button press. Touch ID is built into the Home button.
The iPhone 8 and the iPhone 8 Plus might look a lot like the iPhone 7 and the iPhone 7 Plus, but the glass body is a major distinguishing feature. According to Apple, the front and back glass is the most durable it's ever made. The two devices come in Silver, Space Gray, and a new shade of Gold that's a little bit rosier than the traditional gold shades.
Apple used a seven-layer ink process to add color to the glass, giving the iPhone 8 and 8 Plus a rich depth of color. An oleophobic coating ensures that smudges and fingerprints wipe away easily.
The glass shell and display are held together by a stainless steel internal frame and an aerospace-grade 7000 Series aluminum band that matches the color of each iPhone for a seamless look. Small, nearly invisible antenna lines cut through the aluminum frame to ensure adequate signal.
Though the iPhone 8 and iPhone 8 Plus use durable glass wrapped around a stainless steel internal frame, glass breaks when dropped on the ground, and the two devices have proven to be highly breakable when subjected to drop tests, even from heights as low as the waist.
On the left side of the iPhone 8 and 8 Plus, there's a mute switch and volume buttons, and the right side houses the sleep/wake button. At the bottom, there's a Lightning port and speaker holes. Like the iPhone 7 and iPhone 7 Plus, the two new devices have no headphone jack and will require Lightning headphones or Bluetooth headphones.
Size wise, the iPhone 8 and the iPhone 8 Plus are ever so slightly larger than the iPhone 7 and iPhone 7 Plus. In usage, the size difference is tiny that it won't really be noticeable, but it's there.
The iPhone 8 measures in at 138.4mm tall by 67.3mm wide, and it's 7.3mm thick. Comparatively, the iPhone 7 is 138.8mm tall, 67.1mm wide, and 7.1mm thick.
The iPhone 8 Plus measures in at 158.4mm tall by 78.1mm wide and it's 7.5mm thick. Comparatively, the iPhone 7 Plus is 158.2mm tall, 77.9mm wide, and 7.3mm thick.
At the rear, the iPhone 8 continues to feature a single-lens protruding camera, while the iPhone 8 Plus features a wider dual-lens rear camera arranged in a horizontal orientation.
Like the previous-generation iPhones, the iPhone 8 and the iPhone 8 Plus are water and dust resistant. An IP67 dust/water resistance rating means the two devices are entirely dust proof and able to withstand 1 meter of water (3.3 feet) for up to 30 minutes.
While the iPhone 8 and 8 Plus can stand up to splashes, rain, and brief accidental water exposure, but intentional water exposure should continue to be avoided. Apple warns that water and dust resistance are not permanent conditions and could decrease as a result of normal wear, plus Apple's warranty does not cover any kind of water damage to an iOS device.
While the iPhone X (which is being sold alongside the iPhone 8 and iPhone 8 Plus) features no Home button and thus no Touch ID, the iPhone 8 and iPhone 8 Plus both have Touch ID functionality, making them an excellent choice for customers not ready to give up fingerprint-based authentication in favor of the new facial recognition function in the iPhone X.
The Touch ID in the two devices is second-generation Touch ID that's super fast and accurate. Touch ID is used as a biometric authentication method for unlocking the iPhone, confirming iTunes purchases, opening passcode-protected apps, and confirming Apple Pay payments.
The iPhone 8 features a 4.7-inch display with a resolution of 1334 by 750 with 326 pixels per inch and a 1400:1 contrast ratio, while the iPhone 8 Plus features a 5.5-inch display with a 1920 by 1080 resolution, 401 pixels per inch, and a 1300:1 contrast ratio.
Both devices offer support for P3 wide color for rich, true-to-life colors and 625 cd/m2 max brightness, identical to the previous-generation iPhone 7 and iPhone 7 Plus.
New in the iPhone 8 and 8 Plus is the True Tone feature that was first introduced in the iPad Pro. True Tone uses the ambient light sensor to detect the lighting in a room, adjusting the color temperature and intensity to match the light for a more natural viewing experience.