Microsoft Lumia 640 Dual SIM vs alcatel Flash (2017)
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Microsoft Lumia 640 Dual SIM
alcatel Flash (2017)
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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 850, 900, 1900, 2100
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4G network-LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 39(1900), 40(2300), 41(2500)
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HSDPA speed42.2 Mbps-
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HSUPA speed5.76 Mbps-
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HSPA speed-HSPA
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LTE speed-LTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2015-32017-4
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Status2015-42017-5
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Design
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SIMDual SIM (Micro-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height141.3 mm152.6 mm
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Width72.2 mm75.4 mm
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Thickness8.8 mm8.7 mm
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Weight145 g155 g
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ColorsGlossy cyan, Matte black, Orange, WhiteTitanium Grey
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Display
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Display typeIPS LCD capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size5.0 inches5.5 inches
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Resolution720 x 1280 pixels1080 x 1920 pixels
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Pixel density294 ppi401 ppi
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Display colors1677721616777216
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Protection-Asahi Dragontrail Glass, oleophobic coating
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Multitouch-Yes
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Hardware
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CPU-Deca-core
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CPUQuad-core 1.2 GHz ARM Cortex-A7Dual-core 2.3 GHz Cortex-A72
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CPU(second)quad-core 1.9 GHz Cortex-A53
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CPU(third)Quad-core 1.4 GHz Cortex-A53
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ChipsetQualcomm Snapdragon 400Mediatek MT6797 Helio X20
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GPUAdreno 305Mali-T880MP4
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Internal storage8 GB32 GB
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Memory RAM1 GB3 GB
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Memory cardmicroSDmicroSD
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Memory card max128 GB256 GB
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OS
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OSMicrosoft Windows Phone 8.1 with Lumia DenimAndroid OS, v6.0 (Marshmallow)
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Main camera
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Camera type-Dual
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Main camera8 MP13 MP, f/2.0
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13 MP
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Primary camera resolution3264 x 2448 pixels-
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Primary camera video1080p@30fps2160p@30fps, 1080p@60fps
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Primary camera Autofocusautofocusphase detection autofocus
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Primary camera flashLED flashdual-LED (dual tone) flash
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Camera features1/4'' sensor size1.12 µm pixel size, 1/3" sensor size, face detection, geo-tagging, panorama, touch focus
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Selfie camera
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Flash-dual-LED (dual tone) flash
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Selfie camera type-Dual
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Selfie camera1 MP8 MP, f/2.0
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5 MP
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Secondary camera autofocus-autofocus
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Selfie camera video720p-
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration; MP3, WAV ringtonesVibration; MP3, WAV ringtones
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Multimedia
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Radio FMFM 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 Direct-Yes
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WLAN DLNAYes-
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USBmicroUSB 2.0Type-C 1.0 reversible connector
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USB On-The-Go-Yes
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Bluetoothv4.0v4.1
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Bluetooth A2DPYesYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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GPS NavigatorBeidou-
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BDS-Yes
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IMIMIM
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Messaging Push EmailPush Email-
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JavaNoNo
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SensorsAccelerometer, compass, proximityFingerprint (rear-mounted), accelerometer, compass, proximity
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity2500 mAh3100 mAh
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Battery removable-Non-removable
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Talk time 2G27 h 30 min-
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Talk time 3G20 h 30 min20 h
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Standby time 2G840 h-
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Standby time 3G840 h466 h
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