HTC Desire 820s dual sim vs Nokia Lumia 638
HTC Desire 820s dual sim
Nokia Lumia 638
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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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HSDPA speed42.2 Mbps42.2 Mbps
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HSUPA speed5.76 Mbps5.76 Mbps
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LTE speedLTE, Cat4, 150 Mbps download, 50 Mbps uploadLTE, 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 announced2015-32014-12
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Status2015-32014-12
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Design
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SIMDual SIM (Nano-SIM, dual stand-by)Micro-SIM
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Height157.7 mm129.5 mm
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Width78.7 mm66.7 mm
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Thickness7.7 mm9.2 mm
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Weight155 g136 g
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ColorsMarble White, Milkyway Gray, Monarch Orange, Santorini White, Tuxedo GrayBlack
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Display
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Display typeCapacitive touchscreenIPS LCD capacitive touchscreen
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Physical size5.5 inches4.5 inches
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Resolution720 x 1280 pixels480 x 854 pixels
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Pixel density267 ppi218 ppi
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Display colors1677721616777216
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Hardware
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CPUOcta-core 1.7 GHz ARM Cortex-A53Quad-core 1.2 GHz ARM Cortex-A7
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ChipsetMediatek MT6752Qualcomm Snapdragon 400
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GPUMali-T760MP2Adreno 305
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Memory RAM2 GB1 GB
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Internal storage16 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, v4.4.4 (KitKat)Microsoft Windows Phone 8.1
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Main camera
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Main camera13 MP5 MP
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Primary camera resolution4160 x 3120 pixels2592 x 1944 pixels
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Primary camera video1080p@30fpsvideo
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Primary camera Autofocusautofocusautofocus
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Primary camera flashLED flash-
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Camera featuresGeo-tagging, HDR, face detection, panorama, touch focus1/4'' sensor size, geo-tagging, panorama
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Selfie camera
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Secondary camera-No
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Selfie camera8 MP
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Selfie camera video1080p-
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Sound
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3.5mm jackYesYes
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LoudspeakerYes, with stereo speakersYes
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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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Bluetoothv4.0v4.0
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Bluetooth A2DPYesYes
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bluetooth LE-Yes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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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 IM-IM
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Messaging Push EmailPush EmailPush Email
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JavaNoNo
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SensorsAccelerometer, compass, proximityAccelerometer
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity2600 mAh1830 mAh
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Battery removableNon-removable-
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Talk time--
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Talk time 3G12 h 10 min-
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Standby time--
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Standby time 3G560 h-
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