Assistant AS-401L Asper vs DEXP B255
Assistant AS-401L Asper
DEXP B255
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkW-CDMA 900, 2100HSDPA 900, 2100
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4G networkLTE frequency band 1(2100), 3(1800), 7(2600)-
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HSDPA speed-21 Mbps
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HSUPA speed-5.76 Mbps
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LTE speedLTE Cat4, 150.8 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 announced2019-22018-11
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Status2019-22018-11
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Design
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BuildPlasticMetal, plastic
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SIMDual SIM (Micro-SIM, Mini-SIM, dual SIM stand-by)Dual SIM (Nano-SIM/Nano-SIM(microSD), dual stand-by)
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Height138 mm147.8 mm
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Width66 mm71.5 mm
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Thickness9.5 mm8.8 mm
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Weight-151 g
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ColorsBlack, GoldGrey
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Display
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Display typeIPS capacitive touchscreenIPS
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Physical size5 inches5.5 inches
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Resolution480 x 960 pixels640 x 1280 pixels
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Pixel density215 ppi260 ppi
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Display colors1677721616777216
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MultitouchYesYes
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Hardware
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CPUQuad-core 1.3 GHz Cortex-A53Quad-core 1.3 GHz Cortex-A7
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ChipsetMediatek MT6739Mediatek MT6580A
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GPUPowerVR GE8100Mali-400 MP2
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Memory RAM1 GB1 GB
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Internal storage16 GB8 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD, microSDHC, microSDXC
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Memory card max64 GB32 GB
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OS
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OSAndroid 8.1 Oreo Go EditionAndroid 7.0 Nougat
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Main camera
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Camera typeDualDual
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Main camera8 MP8 MP
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0.3 MP0.3 MP
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Primary camera resolution3264 x 2448 pixels3264 x 2448 pixels
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Primary camera video720p@30fps1080p@30fps
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Primary camera flashLED flashLED
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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-modeAutofocus, 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 camera2 MP2 MP
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Selfie camera resolution1600 x 1200 pixels1600 x 1200 pixels
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Selfie camera video480p@30fps480p@30fps MP
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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 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYes-
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v4.0
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Bluetooth A2DPYesYes
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GPSYes, with A-GPSYes, with A-GPS
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Features
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SensorsAccelerometer, fingerprint, proximity, lightAccelerometer
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity2000 mAh3000 mAh
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Battery removableRemovableNon-removable
