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Celkon
Celkon A21
Compare Celkon A21 and Oppo R1S

Celkon A21 vs Oppo R1S

Celkon A21
Celkon A21
Oppo R1S
Oppo R1S
Celkon A21
Oppo R1S
  • Network
  • 2G network
    GSM 900, 1800
    GSM 850, 900, 1800, 1900
  • 3G network
    HSDPA 2100
    HSDPA 850, 900, 1900, 2100 TD-SCDMA 1880-1920/2010-2025
  • 4G network
    -
    LTE 1800, 2600
  • HSDPA speed
    HSDPA
    -
  • HSPA+ speed
    -
    HSPA+
  • LTE speed
    -
    LTE
  • GPRS
    Yes
    Yes
  • EDGE
    Yes
    Yes
  • Availability
  • Status
    2014-12
    2014-6
  • Oficially announced
    2014-12
    2014-4
  • Design
  • SIM
    Dual SIM (dual stand-by)
    Micro-SIM
  • Height
    124.8 mm
    142.7 mm
  • Width
    66.1 mm
    70.4 mm
  • Thickness
    10.8 mm
    7.1 mm
  • Weight
    115.3 g
    140 g
  • Colors
    Black, Blue, Red
    Blue, White
  • Display
  • Display type
    Capacitive touchscreen
    IPS LCD capacitive touchscreen
  • Physical size
    4.0 inches
    5.0 inches
  • Resolution
    320 x 480 pixels
    720 x 1280 pixels
  • Pixel density
    144 ppi
    294 ppi
  • Display colors
    -
    16777216
  • Hardware
  • CPU
    Dual-core 1.2 GHz
    Quad-core 1.6 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
    -
    16 GB
  • Memory card
    microSD
  • Memory card max
    32 GB
    -
  • OS
  • OS
    Android OS, v4.2.2 (Jelly Bean)
    Android OS, v4.3 (Jelly Bean)
  • Main camera
  • Main camera
    3.15 MP
    13 MP
  • Primary camera resolution
    -
    4128 x 3096 pixels
  • Primary camera video
    video
    1080p
  • Primary camera Autofocus
    -
    autofocus
  • Primary camera flash
    -
    LED flash
  • Selfie camera
  • Selfie camera
    1.3 MP
    5 MP
  • Sound
  • 3.5mm jack
    Yes
    Yes
  • Loudspeaker
    Yes
    Yes
  • Notifications
    Vibration, Polyphonic, MP3 ringtones
    Vibration, MP3, WAV ringtones
  • Multimedia
  • Radio FM
    FM radio
    Stereo FM radio with RDS
  • Connectivity
  • WLAN
    Wi-Fi
    Wi-Fi 802.11b, 802.11g, 802.11n
  • WLAN WiFi Hotspot
    -
    Yes
  • WLAN WiFi Direct
    -
    Yes
  • WLAN WiFi Upnp
    -
    Yes
  • USB
    Yes
    microUSB 2.0
  • Bluetooth
    v4.0
    v4.0
  • Bluetooth A2DP
    -
    Yes
  • GPS
    No
    Yes, with A-GPS
  • Features
  • Messaging SMS
    SMS(threaded view)
    SMS(threaded view)
  • Messaging MMS
    MMS
    MMS
  • Messaging Email
    Email
    Email
  • Messaging Push Email
    -
    Push Email
  • Java
    Yes, via Java MIDP emulator
    Yes, via Java MIDP emulator
  • Browser
  • HTML
    Yes
    HTML5
  • Battery
  • Battery type
    Li-Ion
    Li-Ion
  • Battery capacity
    1500 mAh
    2410 mAh
  • Talk time
    -
    -
  • Talk time 3G
    8 h
    -
  • Standby time
    -
    -
  • Standby time 3G
    120 h
    -

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