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Celkon
Celkon A21
Compare Celkon A21 and Microsoft Lumia 640 XL LTE Dual SIM

Celkon A21 vs Microsoft Lumia 640 XL LTE Dual SIM

Celkon A21
Celkon A21
Microsoft Lumia 640 XL LTE Dual SIM
Microsoft Lumia 640 XL LTE Dual SIM
Celkon A21
Microsoft Lumia 640 XL LTE Dual SIM
  • Network
  • 2G network
    GSM 900, 1800
    GSM 850, 900, 1800, 1900
  • 3G network
    HSDPA 2100
    HSDPA 850, 900, 1700, 1900, 2100
  • HSDPA speed
    HSDPA
    42.2 Mbps
  • HSUPA speed
    -
    5.76 Mbps
  • LTE speed
    -
    LTE, Cat4, 150 Mbps download, 50 Mbps upload
  • GPRS
    Yes
    Yes
  • EDGE
    Yes
    Yes
  • Availability
  • Status
    2014-12
    2015-3
  • Oficially announced
    2014-12
    2015-3
  • Design
  • SIM
    Dual SIM (dual stand-by)
    Dual SIM (Micro-SIM, dual stand-by)
  • Height
    124.8 mm
    157.9 mm
  • Width
    66.1 mm
    81.5 mm
  • Thickness
    10.8 mm
    9 mm
  • Weight
    115.3 g
    171 g
  • Colors
    Black, Blue, Red
    Black, Glossy white, Matte cyan, Matte white, Orange
  • Display
  • Display type
    Capacitive touchscreen
    IPS LCD capacitive touchscreen
  • Physical size
    4.0 inches
    5.7 inches
  • Resolution
    320 x 480 pixels
    720 x 1280 pixels
  • Pixel density
    144 ppi
    259 ppi
  • Display colors
    -
    16777216
  • Hardware
  • CPU
    Dual-core 1.2 GHz
    Quad-core 1.2 GHz ARM Cortex-A7
  • Chipset
    Mediatek MT6582
    Qualcomm Snapdragon 400
  • GPU
    -
    Adreno 305
  • Memory ROM
    512 MB
    -
  • Memory RAM
    256 MB
    1 GB
  • Internal storage
    -
    8 GB
  • Memory card
    microSD
    microSD
  • Memory card max
    32 GB
    128 GB
  • OS
  • OS
    Android OS, v4.2.2 (Jelly Bean)
    Microsoft Windows Phone 8.1 with Lumia Denim
  • Main camera
  • Main camera
    3.15 MP
    13 MP
  • Primary camera resolution
    -
    4128 x 3096 pixels
  • Primary camera video
    video
    1080p@30fps
  • Primary camera optics
    -
    Carl Zeiss optics
  • Primary camera Autofocus
    -
    autofocus
  • Primary camera flash
    -
    LED flash
  • Camera features
    -
    1/3'' sensor size
  • Selfie camera
  • Selfie camera
    1.3 MP
    5 MP
  • Selfie camera video
    -
    1080p
  • Sound
  • 3.5mm jack
    Yes
    Yes
  • Loudspeaker
    Yes
    Yes
  • Notifications
    Vibration, Polyphonic, MP3 ringtones
    Vibration; MP3, WAV ringtones
  • Multimedia
  • Radio FM
    FM radio
    FM radio
  • Connectivity
  • WLAN
    Wi-Fi
    Wi-Fi 802.11b, 802.11g, 802.11n
  • WLAN WiFi Hotspot
    -
    Yes
  • WLAN DLNA
    -
    Yes
  • USB
    Yes
    microUSB 2.0
  • Bluetooth
    v4.0
    v4.0
  • Bluetooth A2DP
    -
    Yes
  • GPS
    No
    Yes, with A-GPS
  • GLONASS
    -
    Yes
  • GPS Navigator
    -
    Beidou
  • Features
  • Messaging SMS
    SMS(threaded view)
    SMS(threaded view)
  • Messaging MMS
    MMS
    MMS
  • Messaging Email
    Email
    Email
  • Messaging IM
    -
    IM
  • Messaging Push Email
    -
    Push Email
  • Java
    Yes, via Java MIDP emulator
    No
  • Sensors
    -
    Accelerometer, compass, proximity
  • Browser
  • HTML
    Yes
    HTML5
  • Battery
  • Battery type
    Li-Ion
    Li-Ion
  • Battery capacity
    1500 mAh
    3000 mAh
  • Talk time 2G
    -
    31 h 20 min
  • Talk time 3G
    8 h
    23 h 40 min
  • Standby time 2G
    -
    936 h
  • Standby time 3G
    120 h
    936 h

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