Microsoft Lumia 640 Dual SIM vs ZTE Star 2
Microsoft Lumia 640 Dual SIM
ZTE Star 2
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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, 1700, 1900, 2100 (Bands 1, 2, 4, 5, 8)
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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 announced2015-32014-12
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Status2015-42014-12
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Design
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SIMDual SIM (Micro-SIM, dual stand-by)Micro-SIM
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Height141.3 mm140.3 mm
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Width72.2 mm69.2 mm
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Thickness8.8 mm6.9 mm
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Weight145 g130 g
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ColorsGlossy cyan, Matte black, Orange, WhiteBlack, White
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Display
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Display typeIPS LCD capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size5.0 inches5.0 inches
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Resolution720 x 1280 pixels1080 x 1920 pixels
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Pixel density294 ppi441 ppi
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Display colors1677721616777216
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Hardware
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CPUQuad-core 1.2 GHz ARM Cortex-A7Quad-core 2.3 GHz Krait 400
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ChipsetQualcomm Snapdragon 400Qualcomm MSM8974AB Snapdragon 801
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GPUAdreno 305Adreno 330
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Memory RAM1 GB2 GB
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Internal storage8 GB16 GB
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Memory cardmicroSDmicroSD
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Memory card max128 GB64 GB
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OS
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OSMicrosoft Windows Phone 8.1 with Lumia DenimAndroid OS, v4.4.x (KitKat)
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Main camera
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Main camera8 MP13 MP
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Primary camera resolution3264 x 2448 pixels4128 x 3096 pixels
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Primary camera video1080p@30fps2160p@30fps, 1080p@60fps
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Primary camera Autofocusautofocusautofocus
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Primary camera flashLED flashdual-LED (dual tone) flash
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Camera features1/4'' sensor sizeGeo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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Selfie camera1 MP5 MP
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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-
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Radio FMFM 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 2.0microUSB 2.0
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USB host-Yes
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Bluetoothv4.0v4.0
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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Infrared-Yes
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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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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 EmailPush Email
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JavaNoYes, via Java MIDP emulator
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SensorsAccelerometer, compass, proximityAccelerometer, compass, gyro, proximity
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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 capacity2500 mAh2400 mAh
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Battery removable-Non-removable
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Talk time-20 h
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Talk time 2G27 h 30 min-
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Talk time 3G20 h 30 min-
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Standby time-350 h
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Standby time 2G840 h-
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Standby time 3G840 h-
