Gigabyte GSmart Roma R2 vs Microsoft Lumia 640 LTE
Gigabyte GSmart Roma R2
Microsoft Lumia 640 LTE
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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 900, 2100HSDPA 850, 900, 2100
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HSDPA speedHSDPA, 21 Mbps42.2 Mbps
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HSUPA speedHSUPA5.76 Mbps
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LTE speed-LTE, Cat4, 150 Mbps download, 50 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2013-102015-3
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Status2013-102015-4
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Design
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SIMDual SIMMicro-SIM
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Height141.3 mm
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Width72.2 mm
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Thickness8.8 mm
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Weight145 g
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ColorsBlack, Blue, Red, WhiteGlossy cyan, Matte black, Orange, White
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Display
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Display typeIPS LCD capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size4.0 inches5.0 inches
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Resolution480 x 800 pixels720 x 1280 pixels
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Pixel density233 ppi294 ppi
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Display colors1677721616777216
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Hardware
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CPUDual-core 1.3 GHzQuad-core 1.2 GHz ARM Cortex-A7
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ChipsetMediatek MT6572Qualcomm Snapdragon 400
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GPUMali-400Adreno 305
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Memory RAM1 GB1 GB
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Internal storage4 GB8 GB
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Memory cardmicroSDmicroSD
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Memory card max32 GB128 GB
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OS
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OSAndroid OS, v4.2 (Jelly Bean)Microsoft Windows Phone 8.1 with Lumia Denim
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Main camera
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Main camera5 MP8 MP
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Primary camera resolution2592 x 1944 pixels3264 x 2448 pixels
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Primary camera videovideo1080p@30fps
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Primary camera Autofocus-autofocus
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Primary camera flashLED flashLED flash
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Camera features-1/4'' sensor size
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Selfie camera
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Secondary cameraVGA camera-
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Selfie camera1 MP
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Selfie camera video-720p
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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 DLNA-Yes
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv3.0v4.0
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Bluetooth A2DP-Yes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASS-Yes
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GPS Navigator-Beidou
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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 Email-Push Email
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JavaYes, via Java MIDP emulatorNo
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Sensors-Accelerometer, compass, proximity
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Browser
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HTMLYesHTML5
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1400 mAh2500 mAh
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Talk time3 h 30 min-
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Talk time 2G-26 h 30 min
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Talk time 3G-17 h 30 min
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Standby time220 h-
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Standby time 2G-864 h
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Standby time 3G-864 h
