Microsoft Lumia 640 LTE vs Oppo R821T FInd Muse
Microsoft Lumia 640 LTE
Oppo R821T FInd Muse
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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, 2100HSDPA 2100
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HSDPA speed42.2 MbpsHSDPA
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HSUPA speed5.76 MbpsHSUPA
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LTE speedLTE, 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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Status2015-42014-12
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Oficially announced2015-32014-12
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Design
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SIMMicro-SIMDual SIM (Mini-SIM, dual stand-by)
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Height141.3 mm123 mm
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Width72.2 mm63.5 mm
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Thickness8.8 mm9.9 mm
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Weight145 g
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ColorsGlossy cyan, Matte black, Orange, WhiteWhite
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Display
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Display typeIPS LCD capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size5.0 inches4.0 inches
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Resolution720 x 1280 pixels480 x 800 pixels
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Pixel density294 ppi233 ppi
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Display colors1677721616777216
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Hardware
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CPUQuad-core 1.2 GHz ARM Cortex-A7Dual-core 1.2 GHz ARM Cortex-A7
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ChipsetQualcomm Snapdragon 400Mediatek MT6572
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GPUAdreno 305Mali-400
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Internal storage8 GB4 GB
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Memory RAM1 GB512 MB
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Memory cardmicroSDmicroSD
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Memory card max128 GB32 GB
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OS
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OSMicrosoft Windows Phone 8.1 with Lumia DenimAndroid OS, v4.2 (Jelly Bean)
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Main camera
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Main camera8 MP3.15 MP
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Primary camera resolution3264 x 2448 pixels2048 x 1536 pixels
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Primary camera video1080p@30fpsvideo
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Primary camera Autofocusautofocus-
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Primary camera flashLED flash-
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Camera features1/4'' sensor size-
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Selfie camera
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Secondary camera-VGA camera
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Selfie camera1 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 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
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WLAN WiFi HotspotYesYes
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WLAN DLNAYes-
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0Yes
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Bluetooth A2DPYes-
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYes-
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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 IMIM-
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Messaging Push EmailPush EmailPush Email
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JavaNoYes, via Java MIDP emulator
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SensorsAccelerometer, compass, proximity-
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Browser
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HTMLHTML5Yes
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity2500 mAh1700 mAh
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Talk time--
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Talk time 2G26 h 30 min-
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Talk time 3G17 h 30 min-
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Standby time--
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Standby time 2G864 h-
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Standby time 3G864 h-
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