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Nokia Lumia 638
Compare Nokia Lumia 638 and Xiaomi Redmi 4a

Nokia Lumia 638 vs Xiaomi Redmi 4a

Nokia Lumia 638
Nokia Lumia 638
Xiaomi Redmi 4a
Xiaomi Redmi 4a
Nokia Lumia 638
Xiaomi Redmi 4a
  • Network
  • 2G network
    GSM 850, 900, 1800, 1900
    GSM 850, 900, 1800, 1900; CDMA 800, 1900
  • 3G network
    HSDPA 850, 900, 1900, 2100
    HSDPA 850, 900, 1900, 2100; CDMA2000 1xEV-DO & TD-SCDMA
  • 4G network
    -
    LTE frequency band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500)
  • HSDPA speed
    42.2 Mbps
    -
  • HSUPA speed
    5.76 Mbps
    -
  • HSPA speed
    -
    HSPA
  • LTE speed
    LTE, Cat4, 150 Mbps download, 50 Mbps upload
    LTE
  • GPRS
    Yes
    Yes
  • EDGE
    Yes
    Yes
  • Availability
  • Oficially announced
    2014-12
    2016-11
  • Status
    2014-12
    2016-11
  • Design
  • SIM
    Micro-SIM
    Dual SIM
  • Height
    129.5 mm
    139.5 mm
  • Width
    66.7 mm
    70.4 mm
  • Thickness
    9.2 mm
    8.5 mm
  • Weight
    136 g
    131.5 g
  • Colors
    Black
    Gold, Rose Gold
  • Display
  • Display type
    IPS LCD capacitive touchscreen
    IPS LCD capacitive touchscreen
  • Physical size
    4.5 inches
    5.0 inches
  • Resolution
    480 x 854 pixels
    720 x 1280 pixels
  • Pixel density
    218 ppi
    294 ppi
  • Display colors
    16777216
    16777216
  • Multitouch
    -
    Yes
  • Hardware
  • CPU
    Quad-core 1.2 GHz ARM Cortex-A7
    Quad-core 1.4 GHz ARM Cortex-A53
  • Chipset
    Qualcomm Snapdragon 400
    Qualcomm MSM8917 Snapdragon 425
  • GPU
    Adreno 305
    Adreno 308
  • Memory RAM
    1 GB
    2 GB
  • Internal storage
    8 GB
    16 GB
  • Memory card
    microSD
    microSD(uses second SIM slot)
  • Memory card max
    128 GB
    256 GB
  • OS
  • OS
    Microsoft Windows Phone 8.1
    Android OS, v6.0.1 (Marshmallow)
  • Main camera
  • Main camera
    5 MP
    13 MP, f/2.2
  • Primary camera resolution
    2592 x 1944 pixels
    -
  • Primary camera video
    video
    1080p@30fps
  • Primary camera Autofocus
    autofocus
    autofocus
  • Primary camera flash
    -
    LED flash
  • Camera features
    1/4'' sensor size, geo-tagging, panorama
    Geo-tagging, HDR, face/smile detection, panorama, touch focus
  • Selfie camera
  • Secondary camera
    No
    -
  • Selfie camera
    5 MP, f/2.2
  • Sound
  • 3.5mm jack
    Yes
    Yes
  • Loudspeaker
    Yes
    Yes
  • Notifications
    Vibration; MP3, WAV ringtones
    Vibration; MP3, WAV ringtones
  • Multimedia
  • Radio FM
    FM radio
    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
  • WLAN DLNA
    Yes
    -
  • USB
    microUSB 2.0
    microUSB 2.0
  • Bluetooth
    v4.0
    v4.1
  • Bluetooth A2DP
    Yes
    Yes
  • bluetooth LE
    Yes
    Yes
  • Infrared
    -
    Yes
  • GPS
    Yes, with A-GPS
    Yes, with A-GPS
  • GLONASS
    Yes
    Yes
  • BDS
    -
    Yes
  • Features
  • Messaging SMS
    SMS(threaded view)
    SMS(threaded view)
  • Messaging MMS
    MMS
    MMS
  • Messaging Email
    Email
    Email
  • Messaging IM
    IM
    IM
  • Messaging Push Email
    Push Email
    -
  • Messaging Push Mail
    -
    Push Mail
  • Java
    No
    No
  • Sensors
    Accelerometer
    Accelerometer, compass, gyro, proximity
  • Browser
  • HTML
    HTML5
    HTML5
  • Battery
  • Battery type
    Li-Ion
    Li-Ion
  • Battery capacity
    1830 mAh
    3120 mAh
  • Battery removable
    -
    Non-removable
  • Talk time
    -
    -
  • Standby time
    -
    -

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