The iPhone X display has rounded corners that follow a beautiful curved design, and these corners are within a standard rectangle. When measured as a standard rectangular shape, the screen is 5.85 inches diagonally (actual viewable area is less).
Audio formats supported: AAC-LC, HE-AAC, HE-AAC v2, Protected AAC, MP3, Linear PCM, Apple Lossless, FLAC, Dolby Digital (AC-3), Dolby Digital Plus (E-AC-3), and Audible (formats 2, 3, 4, Audible Enhanced Audio, AAX, and AAX+)
User-configurable maximum volume limit
Video Playback
Video formats supported: HEVC, H.264, MPEG-4 Part 2, and Motion JPEG
High Dynamic Range with Dolby Vision and HDR10 content
AirPlay Mirroring, photos, and video out to Apple TV (2nd generation or later)
Video mirroring and video out support: Up to 1080p through Lightning Digital AV Adapter and Lightning to VGA Adapter (adapters sold separately)
Siri
Use your voice to send messages, set reminders, and more
Get intelligent suggestions in Messages, Mail, QuickType, and more
Activate with only your voice using “Hey Siri”
Listen and identify songs
Power and Battery
Lasts up to 2 hours longer than iPhone 7
Talk time (wireless):
Up to 21 hours
Internet use:
Up to 12 hours
Video playback (wireless):
Up to 13 hours
Audio playback (wireless):
Up to 60 hours
Fast-charge capable:
Up to 50% charge 30 minutes
Built-in rechargeable lithium-ion battery
Wireless charging (works with Qi-certified chargers)
Charging via USB to computer system or power adapter