watchOS - definition
watchOS is an operating system developed by Apple Inc. for their smart watch WatchSeries. There are so many interesting and useful feature are available on watchOS.
0 - 9
A
A-GPS (Assisted GPS)|A2DP (Advanced Audio Distribution Profile)|AAC (Advanced Audio Coding)|Accelerometer|Airplane mode|Alarm Clock|Alphanumeric|AMOLED display (Active-matrix organic light-emitting diode)|Analog|Android|ANT+|Antenna|Aperture|APN (Access Point Name)|Apple AirPlay|Apple AirPlay 2|Apple iOS|Apple iOS 10|Apple iOS 11|Apple iOS 12|Apple iOS 7|Apple iOS 8|Apple iOS 9|Apple Pay|aptX|Audio jack|Auto-focus|AVRCP (Audio/Video Remote Control Profile)|Accessibility|AFP|Aspect Ratio|Authentication|Autocomplete|AdaptiveSync Pro|Ad Hoc Network|ANSI|Artificial Intelligence (AI)|ASCII|Augmented Reality|Active Noise Cancellation (ANC)|
B
Browser|Bada OS|Band|Bandwidth|Bar|Base Station|Battery Charging|BeiDou Navigation Satellite System|Benchmarking|Biometrics|Bit|BlackBerry OS|Bluetooth|bps (Bits per Second)|Brand|Broadband|Browser|Byte|BlackBerry Tablet OS|Binary|Blacklist|BLE|Boot|Broadcast|Buffer|Burn|Beamforming|Baseband|Biotech|Bitcoin|Boolean|Boot Sequence|Breadcrumbs|
C
Calculator|Calendar|Call alerts|Call alerts|Calling Plan|Camera|Capacitive Touch Screen|Car Kit|Carrier|CDMA (Code-Division Multiple Access)|CDMA2000|CIF (Common Intermediate Format)|Cell|Chipset|Clamshell|CMOS (Complementary metal-oxide semiconductor)|Color depth|Color depth|Concatenated SMS|Connected GPS|Corning Gorilla Glass|CPU (Central Processing Unit)|Crosstalk|CTIA|Custom ringtones|CyanogenMod|CPU Throttling|Cache|Charging Amps|CSTN (Color Super Twisted Nematic)|Caps Lock|CAD|Camera RAW|CAN|ChatGPT|CDMA|Character|Circuit|Client-Server Model|Clock Cycle|Clock Speed|CMYK|Cold Boot|Computer Ethics|Computer Science|Crop|Crossplatform|Cryptography|CUDA|
D
D-Pad (Direction Pad)|Digital Zoom|Display type|Downlink|Dual-SIM|Dynamic Memory|Dual-band|Dual-Mode|Data Disclaimer|DLNA (Digital Living Network Alliance)|DNSe (Digital Natural Sound engine)|DRM (Digital Rights Management)|DVB-H (Digital Video Broadcasting - Handheld)|DC Power|Desktop Computer|Dual Core|Decryption|Digital|Dot Matrix|DPI|Double Click|
E
EDGE (Enhanced Data for Global Evolution)|EGPRS|Email client|Emoji|EMS (Enhanced Message Service)|eSIM|External Antenna Jack|External Display|EV-DO|Exchangeable covers|EDR (Enhanced Data Rate)|EGSM (Extended GSM)|EV-DV|Extended Battery|Ethernet|
F
Feature Phone|Firefox OS|Flight mode|FM Radio|FOTA (Firmware Over-The-Air)|FPS (Frames Per Second)|Frame Error Rate|Frequency|FTP (File Transfer Protocol)|Flash Memory|Fixed-focus|FM Transmitter|Flip-down phone|Femtocell|Firmware|Form factor|Fast Charge|Face ID|FCC (Federal Communications Commission)|
G
GB (Gigabyte)|Gbps (Gigabits per second)|Geo-tag|GPRS|GPS (Global Positioning System)|GPU (Graphics Processing Unit)|Gyroscope|GSM|Galileo (Global Navigation Satellite System)|gpsONE|gpsOneXTRA Assistance technology|GLONASS|
H
Handwriting recognition|Hot Spot|Hot Swap|Hz (Hertz)|Haptics|Half-QWERTY keyboard layout|Hexa-core|H.263|HEVC|HyperOS|
I
IMEI (International Mobile Equipment Identity)|IP Ratings|IMAP (Internet Message Access Protocol)|Image Signal Processor (ISP)|Inductive Charging|IP (Internet Protocol)|IR Blaster|IP69K|Immersive Audio|
K
L
M
mAh|Memory card slot|Messaging|MHz (Megahertz)|MMS (Multimedia Messaging Service)|Mobile games|Music playback time (battery life)|Music Player|Mass Storage Mode|MB (Megabyte)|Mbps (Megabit per second)|Megapixel|Micro USB|microSD|microSDHC|Modem|Monochrome|Memory effect|Magnetometer|Model|Miracast|Multi-Touch|Macro|Mbps|MIMO (Multiple Input Multiple Output|
N
O
P
Phonebook|Port|Predictive text input|PTT (Push-To-Talk)|PUK Code (Personal Unlock Key)|Polyphonic ringtones|Pixel density (Pixels Per Inch)|Pixel|PIN code (Personal Identification Number)|POP3 (Post Office Protocol)|Phone Physical Attributes|Phone Life Cycle|Percentile rank|Personal Assistant|Power Bank|PPI|Privacy Screen Protector|Proximity Sensor|Passive Noise Cancellation|
Q
R
RAM (Random-Access Memory)|Ringtone|ROM (Read-Only Memory)|Roaming|Ringing profiles|Ringer ID|Resistive touchscreen|Resolution|Ruggedized (Rugged)|RSS (Rich Site Summary)|RS-MMC (Reduced-Size Multi Media Card)|Rechargeable Battery Types|RDS (Radio Data System)|RBDS (Radio Broadcast Data System)|RFID|Root|Refresh Rate|Reverse Charging|
S
S60 user interface|SAP (SIM Access Profile)|SAR (Specific absorption rate)|Screen protection|Secondary camera|Sensors|Side Keys|SIM|SIM lock|Single-Band|Slimport|Smart Watch|Smartphone|SMS (Short Messaging Service)|SNS (Social network service)|Soft keys|Soft Reset|Speed Dial|Stand-by time (battery life)|Stereo Speakers|Streaming Video|Stylus|SVGA|Symbian|Skin|SD (Secure Digital)|Sub-QCIF|SMIL|Semi-AMOLED|
T
Talk time (battery life)|TEST|Tethering|Text messaging (texting)|TFD (Thin Film Diode)|TFT (Thin Film Transistor)|Theme|To-Do list|To-Do list|Touchscreen|Trackball|Transflash|Transflective|Tri-band|TCP/IP|TD-SCDMA (Time Division-Synchronous Code Division Multiple Access)|Touch ID|TDMA|Tempered Glass|Two-Factor Authentication (2FA)|THX|THD-Total Harmonic Distortion|
U
UFS|UI (User Interface)|UIQ|UMA|UMTS|Unlocked phone|Upload|UPnP (Universal Plug and Play)|USB (Universal Serial Bus)|USB On-The-Go|USIM|UX|Ultra-Wide Camera|USB Type-C or USB-C|User ID|Uptime|Username|User-Friendly|Unified Memory (Unified Memory Architecture - UMA)|
V
VGA (Video Graphics Array)|Video call|Video Codec|Voice dialing|Voice mail|Voice memo|VoIP (Voice over Internet Protocol)|VPN (Virtual Private Network)|Vapor Chamber Cooling (VC Cooling)|Virtual Proximity Sensing|Virtual RAM|
W
WAP (Wireless Application protocol)|watchOS|WCDMA(Wideband Code Division Multiple Access)|Wear OS|Wearable Technology|webOS|Wi-Fi|Windows Mobile|Windows Phone OS|Wireless email|WLAN|WMV (Windows Media Video)|Wi-Fi Assistant|Widget|Wireless|Wired|Widevine L1|
