vivo X21i vs Huawei Watch 2 Pro
vivo X21i
Huawei Watch 2 Pro
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Network
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2G networkGSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMAGSM 900, 1800
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3G networkHSDPA 850, 900, 2100HSDPA 2100
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4G networkLTE frequency band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)LTE
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HSPA speedHSPAHSPA
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LTE speedLTELTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2018-52017-10
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Status2018-52017-10
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Design
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BuildAluminium alloy, glassStainless Steel 316L
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SIMHybrid Dual SIM (Nano-SIM, dual stand-by)Electronic SIM card (e-SIM)
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Height154.4 mm48.3 mm
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Width75 mm45 mm
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Thickness7 mm12.6 mm
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Weight159 g64 g
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Waterproof-IP68 certified, 1 m and 30 minutes
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Dust proof-IP68
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ColorsAurora White, Black, Ruby RedTitanium Grey
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Display
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Display typeSuper AMOLED capacitive touchscreenAMOLED capacitive touchscreen
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Physical size6.28 inches1.2 inches
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Resolution1080 x 2280 pixels390 x 390 pixels
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Pixel density402 ppi326 ppi
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Display colors1677721616777216
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Protection-Corning Gorilla Glass
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MultitouchYesYes
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Hardware
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CPUOcta-core-
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CPUQuad-core 2 GHz Cortex-A73Quad-core 1.1 GHz
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CPU(second)quad-core 2 GHz Cortex-A53
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ChipsetMediatek MT6771 Helio P60Qualcomm MSM8909W Snapdragon Wear 2100
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GPUMali-G72 MP3-
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Memory RAM4, 6 GB768 MB
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Internal storage64, 128 GB4 GB
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Memory cardmicroSD(uses second SIM slot)
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Memory card max256 GB-
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OS
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OSAndroid 8.1 (Oreo)Android Wear OS 2.0 (China edition)
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Main camera
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Camera typeDual-
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Main camera12 MP, f/1.8 , 1/2.5" , 1.4 µm
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5 MP, f/2.4
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Primary camera resolution4032 x 3024 pixels-
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Primary camera video1080p@30fps-
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Primary camera Autofocusdual pixel phase detection autofocus-
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Primary camera flashLED flash-
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Camera featuresGeo-tagging, HDR, face detection, panorama, touch focus-
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Selfie camera
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Selfie camera24 MP
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Selfie camera resolution5632 x 4224 pixels-
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Selfie camera video1080p@30fps-
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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NotificationsVibration; MP3, WAV ringtonesVibration; MP3, WAV ringtones
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EarpieceYes-
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Multimedia
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Radio-No
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Radio FMFM radio-
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11acWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYes-
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WLAN WiFi DirectYes-
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WLAN WiFi Dual BandYes-
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USBmicroUSB 2.0
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USB On-The-GoYes-
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Bluetoothv5.0v4.1
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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Bluetooth EDR-Yes
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NFC-Yes
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GPSYes, with A-GPSYes
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GLONASSYes-
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Features
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Messaging SMSSMS(threaded view)SMS
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Messaging MMSMMS-
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Messaging EmailEmailEmail
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Messaging IM-IM
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Messaging Push EmailPush Email-
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Java-No
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SensorsFingerprint (rear-mounted), accelerometer, compass, proximityAccelerometer, barometer, compass, gyro, heart rate
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Browser
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HTMLHTML5-
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Browser-No
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity3425 mAh420 mAh
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Battery removableNon-removableNon-removable
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Fast battery chargingYesYes
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Standby time-48 h