The iPhone X has a
5.8-inch OLED color-accurate screen that supports DCI-P3 wide
color gamut, sRGB, and high dynamic range,[26][27] and
has a contrast ratio of 1,000,000:1.[28] The
Super Retina display has the True Tone technology found on the iPad Pro,
which uses ambient light sensors to adapt the
display's white balance to the surrounding ambient light.[29][30] Although
the iPhone X does not feature the same "ProMotion" technology used in
the displays of the second-generation iPad Pro,
where the display delivers a refresh rate of 120Hz, it does sample touch input
at 120Hz.[31] OLED
screen technology has a known negative trend of "burn-in" effects, in
which particular elements consistently on the screen for long periods of time
leave a faint trace even after new images appear. Apple acknowledged that its
OLED screens were not excluded from this issue, writing in a support document
that "This is also expected behavior".[32][33] Greg
Joswiak, Apple's vice president of product marketing, told Tom's Guide that
the OLED panels Apple used in the iPhone X had been engineered to avoid the
"oversaturation" of colors that using OLED panels typically results
in, having made color adjustments and "subpixel"-level refinements
for crisp lines and round corners.[34][35] For
out-of-warranty servicing for damages not relating to manufacturing defects,
screen repairs of iPhone X cost US$279, while other damage repairs cost US$549.[36][37]
The iPhone X has two
color options; silver and space gray.[29] The
front and back of the phone are composed of surgical-grade stainless steel to
improve durability, and the device has a glass casing. The design is intended
to be IP67 water
and dust resistant.[29][38]
The iPhone X contains
Apple's A11 Bionic system-on-chip,
also used in the iPhone 8 and 8 Plus, which is a six-core processor with two
cores optimized for performance (25% faster than the A10 Fusion processor),
along with four cores optimized for efficiency (70% faster than the previous
generation).[39] It
also features the first Apple-designed graphics processing unit[40][41] and
a Neural Engine, which powers an artificial intelligenceaccelerator.[42][43]
Face ID replaces the
Touch ID authentication system. The facial recognition sensor consists of
two parts: a "Romeo" module that projects more than 30,000 infrared
dots onto the user's face, and a "Juliet" module that reads the
pattern.[44] The
pattern is sent to the Secure Enclave in the A11 Bionic chip to confirm a match
with the phone owner's face.[45][46] By
default, the system will not work with eyes closed, in an effort to prevent
unauthorized access but this requirement can be disabled in settings.[45]
The iPhone X has two
cameras on the rear. One is a 12-megapixel wide-angle camera
with f/1.8 aperture, with support for face detection, high dynamic range and optical image stabilization. It is capable
of capturing 4K video at 24, 30 or 60 frames per
second, or 1080p video at 30, 60, 120 or 240 frames per second.[47] A
secondary, telephoto lens features 2× optical zoom and 10× digital
zoom with an aperture of f/2.4 and optical image stabilization.[48] A
Portrait Mode is capable of producing photos with specific depth-of-field and
lighting effects.[49] It
also has a quad-LED True Tone flash with 2× better light
uniformity.[50]
On the front of the
phone, a 7-megapixel TrueDepth camera has an f/2.2 aperture,[48] and
features face detection and HDR. It can capture 1080p video at 30 frames per
second, 720p video at 240 frames per second,[47] and
exclusively allows for the use of Animoji;
animated emojis placed on top of the user's face that intelligently react to
the user's facial expressions.[51][52]
iPhone X also
supports Qi-standard wireless
charging.[29] In
tests conducted by MacRumors, the iPhone X's charging speed varies
significantly depending on what types of cables, powerbanks, adapters, or
wireless chargers are used.[53]
Software
See also: iOS version history, iOS 11,
and iOS 12
Due to its different
screen layout, iOS developers are required to update their apps to make full
use of the additional screen real estate. Such changes include rounded corners,
sensor "notch" at the top of the screen, and an indicator area at the
bottom for accessing the home screen. Apple published a "Human Interface
Guidelines" document to explain areas of focus, and discouraged developers
from attempting to mask or call special attention to any of the new changes.
Additionally, text within the app needs to be configured to properly reference
Face ID rather than Touch ID where the authentication technology is used on
iPhone X.[54] In
anticipation of the release of the phone, most major apps were quickly updated
to support the new changes brought by iPhone X,[55] though
the required changes did cause delayed app updates for some major apps.[56][57][58]
The traditional home
button, found on all previous devices in the iPhone lineup, has been removed
entirely, replaced by touch-based gestures. To wake up the device, users can
tap the display or use the side button; to access the home screen, users must swipe
up from the bottom of the display; and to access the multitasking window, users
must swipe up similarly to the method of accessing the home screen, but stop
while the finger is in the middle of the screen, causing an app carousel to
appear
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