UMIDIGI A3 Pro vs vivo X20
UMIDIGI A3 Pro
vivo X20
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 900, 1800; CDMA 800 & TD-SCDMA
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3G networkHSDPA 850, 900, 1700, 1900, 2100HSDPA 850, 900, 1900, 2100
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4G networkLTE frequency band 1(2100), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 18(800), 39(1900); LTE-TDD 2300, 2500, 2600 MHzLTE frequency band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
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HSPA speed-HSPA
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LTE speedLTE, Cat4, 150 Mbps download, 51 Mbps uploadLTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2018-102017-9
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Status2018-102017-10
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Design
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BuildMetal, plastic-
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SIMDual SIM (Nano-SIM, dual stand-by)Hybrid Dual SIM (Nano-SIM, dual stand-by)
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Height147.2 mm155.9 mm
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Width70.2 mm75.2 mm
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Thickness8.5 mm7.2 mm
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Weight187 g159 g
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ColorsGray, GoldBlack/Gold, Gold, Matte Black, Rose gold
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Display
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Display typeIPS capacitive touchscreenSuper AMOLED capacitive touchscreen
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Physical size5.7 inches6.01 inches
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Resolution720 x 1512 pixels1080 x 2160 pixels
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Pixel density294 ppi402 ppi
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Display colors1677721616777216
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Protection2.5D curved glass screen-
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MultitouchYesYes
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Hardware
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CPU-Octa-core
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CPUQuad-core 1.5 GHz Cortex-A53Quad-core 2.2 GHz Kryo 260
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CPU(second)quad-core 1.8 GHz Kryo 260
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ChipsetMediatek MT6739Qualcomm MSM8956 Plus Snapdragon 660
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GPUPowerVR GE8100-
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Memory RAM3 GB4 GB
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Internal storage32 GB64 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD(uses second SIM slot)
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Memory card max64 GB256 GB
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StorageeMMC 5.1-
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OS
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OSAndroid 8.1 OreoAndroid 7.1.1 (Nougat)
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Main camera
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Camera typeDualDual
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Main camera12 MP, f/2.0 , 1.25 µm12 MP, f/1.8
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5 MP5 MP
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Primary camera resolution4032 x 3024 pixels-
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Primary camera video1080p@30fps1080p@30fps
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Primary camera Autofocus-autofocus
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Primary camera flashdual-LED flashLED flash
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Primary camera phase detection autofocusphase detection autofocus-
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Camera featuresAutofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-modeGeo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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Selfie camera8 MP, f/2.0 , 1.127 µm12 MP, f/2.0
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Selfie camera resolution3264 x 2448 pixels-
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Selfie camera video720p@30fps-
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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Notifications-Vibration; 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, 802.11n 5GHzWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYesYes
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Wi-Fi displayYes-
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WLAN WiFi Dual BandYesYes
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USBmicroUSB 2.0microUSB 2.0
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USB On-The-Go-Yes
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Bluetoothv4.0v5.0
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYes-
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BeidouYes-
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Features
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Messaging SMS-SMS(threaded view)
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Messaging MMS-MMS
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Messaging Email-Email
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Messaging Push Email-Push Email
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Java-No
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SensorsAccelerometer, compass, fingerprint, gyroscope, light, proximityFingerprint (rear-mounted), accelerometer, compass, gyro, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity3300 mAh3250 mAh
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Battery removableNon-removableNon-removable
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Fast battery charging-Yes
