Apple Watch 38mm vs vivo Y31
Apple Watch 38mm
vivo Y31
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Network
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2G networkGSM 850, 900, 1800, 1900
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3G network-HSDPA 850, 900, 2100
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HSPA speed-HSPA
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GPRSYes
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EDGEYes
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Availability
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Oficially announced2014-92015-9
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Status2015-52015-10
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Design
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BuildStainless Steel-
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SIMNoDual SIM
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Height38.6 mm137.2 mm
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Width33.3 mm68.8 mm
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Thickness10.5 mm8.4 mm
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Weight40 g137 g
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ColorsBlack Link Bracelet, Blue/Stone Leather Loop, Black/Blue/Brown Buckle, Stainless Steel/Black, Stainless Steel/Red, WhiteBlack, White
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Display
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Display typeAMOLED capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size1.5 inches4.7 inches
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Resolution340 x 272 pixels720 x 1280 pixels
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Pixel density290 ppi312 ppi
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Display colors1677721616777216
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Hardware
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CPU520 MHz1.3 GHz Quad-core
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ChipsetApple S1Mediatek MT6580
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GPUPowerVR SGX543-
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Memory RAM512 MB1 GB
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Internal storage8 GB8 GB
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Memory cardmicroSD
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Memory card max-128 GB
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OS
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OSwatchOS 1.0Android OS, v5.1 (Lollipop)
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Sound
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3.5mm jackNoYes
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LoudspeakerYesYes
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NotificationsVibration; RingtonesVibration; MP3, WAV ringtones
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Multimedia
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RadioNo-
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Radio FM-FM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi
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USBmicroUSB 2.0
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Bluetoothv4.0Yes
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bluetooth LEYes-
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GPSNoYes, with A-GPS
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMS-MMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push MailPush MailPush Mail
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JavaNoNo
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SensorsAccelerometer, gyro, heart rateAccelerometer, compass, proximity
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Browser
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HTML-HTML5
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BrowserNo-
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity205 mAh2100 mAh
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Battery removableNon-removable-
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Talk time3 h-
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Standby time18 h-
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Main camera
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Main camera8 MP
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Primary camera resolution-3264 x 2448 pixels
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Primary camera video-video
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Primary camera flash-LED flash
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Camera features-Geo-tagging, HDR, touch focus
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Selfie camera
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Selfie camera2 MP