Home
Comparison
BLU
BLU J4
Compare BLU J4 and Cat S31

BLU J4 vs Cat S31

BLU J4
BLU J4
Cat S31
Cat S31
BLU J4
Cat S31
  • Network
  • 2G network
    GSM 850, 900, 1800, 1900
    GSM 850, 900, 1800, 1900
  • 3G network
    HSDPA 850, 900, 1900, 2100
    HSDPA 850, 900, 1900, 2100 - EU; HSDPA 850, 900, 1700(AWS), 1900, 2100 - USA
  • 4G network
    -
    LTE frequency band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800) - EU; LTE frequency band 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 12(700), 17(700) - USA
  • HSDPA speed
    21.1 Mbps
    -
  • HSUPA speed
    5.76 Mbps
    -
  • LTE speed
    -
    LTE, Cat4, 150 Mbps download, 50 Mbps upload
  • GPRS
    Yes
    Yes
  • EDGE
    Yes
    Yes
  • Availability
  • Oficially announced
    2019-10
    2017-9
  • Status
    2019-10
    2017-10
  • Design
  • Build
    Plastic
    -
  • SIM
    Dual SIM (Nano-SIM, dual stand-by)
    Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
  • Height
    151 mm
    146 mm
  • Width
    72.3 mm
    74.4 mm
  • Thickness
    10 mm
    12.6 mm
  • Weight
    158 g
    200 g
  • Waterproof
    -
    IP68, 1.2 m and 35 minutes
  • Dust proof
    -
    IP68
  • MIL-STD-810G
    -
    Yes - dust, humidity, rain, salt, vibration, solar radiation, transport and thermal shock resistant
  • Colors
    Black, Blue, Brown
    Black
  • Display
  • Display type
    IPS LCD capacitive touchscreen
    TFT capacitive touchscreen
  • Physical size
    5.5 inches
    4.7 inches
  • Resolution
    720 x 1440 pixels
    720 x 1280 pixels
  • Pixel density
    293 ppi
    312 ppi
  • Display colors
    16777216
    -
  • Protection
    -
    Corning Gorilla Glass 3
  • Multitouch
    Yes
    Yes
  • Hardware
  • CPU
    Quad-core 1.3 GHz Cortex-A7
    Quad-core 1.3 GHz Cortex-A7 ARM
  • Chipset
    -
    Qualcomm MSM8909 Snapdragon 210
  • GPU
    Mali-400
    Adreno 304
  • Memory RAM
    1 GB
    2 GB
  • Internal storage
    32 GB
    16 GB
  • Memory card
    microSD, microSDHC, microSDXC
    microSD
  • Memory card max
    64 GB
    64 GB
  • Storage
    eMMC 5.1
    -
  • OS
  • OS
    Android 8.1 Oreo Go Edition
    Android 7.0 (Nougat)
  • Main camera
  • Camera type
    Single
    -
  • Main camera
    8 MP
    8 MP
  • Primary camera video
    720p@30fps
    720p@30fps
  • Primary camera Autofocus
    -
    autofocus
  • Primary camera flash
    LED flash
    LED flash
  • Camera features
    -
    Geo-tagging, face detection, touch focus
  • Selfie camera
  • Selfie camera
    8 MP
    2 MP
  • Selfie camera video
    720p@30fps
    -
  • Sound
  • 3.5mm jack
    Yes
    Yes
  • Loudspeaker
    Yes
    Yes
  • Notifications
    -
    Vibration; MP3, WAV ringtones
  • Earpiece
    Yes
    -
  • Multimedia
  • Radio
    FM Radio
    -
  • Radio FM
    -
    FM radio
  • Connectivity
  • WLAN
    Wi-Fi 802.11b, 802.11g, 802.11n
    Wi-Fi 802.11b, 802.11g, 802.11n
  • WLAN WiFi Hotspot
    Yes
    Yes
  • WLAN WiFi Direct
    Yes
    -
  • USB
    microUSB 2.0
    microUSB 2.0
  • USB On-The-Go
    -
    Yes
  • Bluetooth
    v4.1
    v4.1
  • Bluetooth A2DP
    Yes
    Yes
  • bluetooth LE
    Yes
    Yes
  • GPS
    Yes, with A-GPS
    Yes, with A-GPS
  • GLONASS
    -
    Yes
  • BDS
    -
    Yes
  • Features
  • Messaging SMS
    -
    SMS(threaded view)
  • Messaging MMS
    -
    MMS
  • Messaging Email
    -
    Email
  • Messaging IM
    -
    IM
  • Messaging Push Email
    -
    Push Email
  • Java
    -
    No
  • Sensors
    Accelerometer
    Accelerometer, compass, proximity
  • Browser
  • HTML
    HTML5
    HTML5
  • Battery
  • Battery type
    Li-Po
    Li-Ion
  • Battery capacity
    2200 mAh
    4000 mAh
  • Battery removable
    Removable
    Non-removable
  • Cost
  • Price
    75 USD
    -

latest BLU models

other BLU models

latest Cat models

other Cat models