Nokia Lumia 830 vs Yezz C21
Nokia Lumia 830
Yezz 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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GPRSYesUp to 48 kbps
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EDGEYesNo
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Availability
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Oficially announced2014-92016-7
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Status2014-92016-8
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Design
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SIMNano-SIMDual SIM (Mini-SIM)
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Height139.4 mm113 mm
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Width70.7 mm48.5 mm
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Thickness8.5 mm14.6 mm
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Weight150 g70 g
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ColorsOrange, black, gold, green, whiteBlack, Blue, Red, White
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Display
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Display typeIPS LCD capacitive touchscreenTFT
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Physical size5.0 inches1.8 inches
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Resolution720 x 1280 pixels128 x 160 pixels
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Pixel density294 ppi114 ppi
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Display colors16777216262144
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Hardware
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CPUQuad-core 1.2 GHz ARM Cortex-A7321 MHz
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ChipsetQualcomm Snapdragon 400Spreadtrum SC6531DA
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GPUAdreno 305-
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Memory RAM1 GB4 MB
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Internal storage16 GB4 MB
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Memory cardmicroSDmicroSD
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Memory card max128 GB8 GB
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Phonebook-Yes
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Call records-Yes
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OS
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OSMicrosoft Windows Phone 8.1-
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Main camera
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Camera typePhoto / Video-
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Main camera10 MP
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Primary camera-VGA
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Primary camera resolution3520 x 2640 pixels-
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Primary camera video1080p@30fpsvideo
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Primary camera opticsCarl Zeiss optics-
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Primary camera Autofocusautofocus-
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Primary camera flashLED flash-
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Primary camera video optical stabilizationoptical stabilization-
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Primary camera optical image stabilizationoptical image stabilization-
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Primary camera video stereo sound recordstereo sound record-
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Camera features1/3.4'' sensor size, PureView technology, face detection, geo-tagging, panoramaNo
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Selfie camera
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Secondary camera-No
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Selfie camera0.9 MP
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Selfie camera video720p-
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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, Polyphonic, MP3
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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 802.11a, 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYes-
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WLAN WiFi Dual BandYes-
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WLAN DLNAYes-
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USBmicroUSB 2.0microUSB 2.0
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Bluetoothv4.0v2.1
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Bluetooth A2DPYes-
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bluetooth LEYes-
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Bluetooth EDRYes-
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Bluetooth AptXYes-
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GPSYes, with A-GPSNo
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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
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Messaging MMSMMS-
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Messaging EmailEmail-
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Messaging IMIM-
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Messaging Push EmailPush Email-
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WAP-Yes
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JavaNoNo
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SensorsAccelerometer, compass, gyro, proximity-
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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 capacity2200 mAh600 mAh
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Battery removable-Removable
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Talk time-3 h
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Talk time 2G12 h 54 min-
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Talk time 3G14 h 48 min-
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Standby time528 h180 h