Nokia Lumia 638 vs Yezz Classic C21
Nokia Lumia 638
Yezz Classic C21
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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, 2100-
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HSDPA speed42.2 Mbps-
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HSUPA speed5.76 Mbps-
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LTE speedLTE, Cat4, 150 Mbps download, 50 Mbps upload-
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GPRSYesYes
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EDGEYes
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Availability
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Oficially announced2014-122014-3
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Status2014-122014-4
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Design
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SIMMicro-SIMDual SIM (Mini-SIM)
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Height129.5 mm106 mm
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Width66.7 mm45 mm
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Thickness9.2 mm14.5 mm
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Weight136 g73 g
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ColorsBlackBlack, Blue, Gray, Green, Purple, Red, White
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Display
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Display typeIPS LCD capacitive touchscreenTFT
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Physical size4.5 inches1.8 inches
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Resolution480 x 854 pixels128 x 160 pixels
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Pixel density218 ppi114 ppi
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Display colors1677721666560
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Hardware
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CPUQuad-core 1.2 GHz ARM Cortex-A7
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ChipsetQualcomm Snapdragon 400-
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GPUAdreno 305-
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Memory RAM1 GB-
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Internal storage8 GB64 MB
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Memory cardmicroSDmicroSD
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Memory card max128 GB8 GB
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OS
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OSMicrosoft Windows Phone 8.1-
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Main camera
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Main camera5 MP
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Primary camera resolution2592 x 1944 pixels640 x 480 pixels
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Primary camera videovideono
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Primary camera Autofocusautofocus-
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Camera features1/4'' sensor size, geo-tagging, panorama-
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Selfie camera
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Secondary cameraNoNo
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Sound
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3.5mm jackYesNo
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LoudspeakerYesYes
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NotificationsVibration; MP3, WAV ringtonesVibration; ringtones
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Multimedia
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Radio FMFM radioStereo FM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYes-
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WLAN DLNAYes-
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USBmicroUSB 2.0Yes
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Bluetoothv4.0v2.1
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Bluetooth A2DPYes-
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bluetooth LEYes-
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GPSYes, with A-GPSNo
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GLONASSYes-
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Features
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Messaging SMSSMS(threaded view)SMS
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Messaging MMSMMSMMS
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Messaging EmailEmail-
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Messaging IMIMIM
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Messaging Push EmailPush Email-
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WAP-Yes
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JavaNoNo
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SensorsAccelerometer-
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Browser
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HTMLHTML5-
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity1830 mAh600 mAh
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Talk time-4 h
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Standby time-150 h