BLU J4 vs Ulefone S1 Pro
BLU J4
Ulefone S1 Pro
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 850, 900, 1900, 2100HSDPA 900, 2100
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4G network-LTE frequency band 1(2100), 3(1800), 7(2600), 8(900), 18(800);
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HSDPA speed21.1 Mbps-
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HSUPA speed5.76 Mbps-
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LTE speed-LTE, Cat4, 150 Mbps download, 51 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2019-102018-7
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Status2019-102018-7
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Design
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BuildPlasticPlastic
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM/Nano-SIM(microSD), dual stand-by)
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Height151 mm148.6 mm
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Width72.3 mm70.7 mm
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Thickness10 mm9.55 mm
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Weight158 g183 g
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ColorsBlack, Blue, BrownBlack, Gold
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Display
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Display typeIPS LCD capacitive touchscreenIPS capacitive touchscreen
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Physical size5.5 inches5.5 inches
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Resolution720 x 1440 pixels480 x 960 pixels
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Pixel density293 ppi195 ppi
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Display colors1677721616777216
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Protection-2.5D curved glass screen
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MultitouchYesYes
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Hardware
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CPUQuad-core 1.3 GHz Cortex-A7Quad-core 1.3 GHz Cortex-A53
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Chipset-Mediatek MT6739
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GPUMali-400PowerVR GE8100
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Memory RAM1 GB1 GB
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Internal storage32 GB16 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max64 GB64 GB
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StorageeMMC 5.1-
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OS
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OSAndroid 8.1 Oreo Go EditionAndroid 8.1 Oreo Go Edition
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Main camera
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Camera typeSingleDual
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Main camera8 MP8 MP, f/2.2
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5 MP
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Interpolated resolution-13 MP
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Primary camera resolution-3264 x 2448 pixels
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Primary camera video720p@30fps1080p@30fps
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Primary camera flashLED flashdual-LED flash
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Camera features-Autofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode
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Selfie camera
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Selfie camera8 MP2 MP, f/2.2
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Selfie camera interpolated resolution-5 MP
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Selfie camera resolution-1600 x 1200 pixels
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Selfie camera video720p@30fps480p@30fps
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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EarpieceYesYes
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Multimedia
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RadioFM RadioFM Radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYes-
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WLAN WiFi Dual Band-Yes
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.1v4.2
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Bluetooth A2DPYesYes
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bluetooth LEYes-
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GPSYes, with A-GPSYes, with A-GPS
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Features
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SensorsAccelerometerAccelerometer, light, 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 capacity2200 mAh3000 mAh
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Battery removableRemovableNon-removable
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Talk time 2G-11 h
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Talk time 3G-11 h
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Standby time 2G-250 h
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Standby time 3G-250 h
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Cost
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Price75 USD-
