• 4.5" (854x480) IPS LCD
  • 0.5GB
    Snapdragon 400 SoC
    8GB Storage
  • 5-MP Rear: 1 Camera
  • 1830 mAh
  • 5" (1280x720) IPS LCD
  • 1GB
    Snapdragon 400 SoC
    8GB Storage
  • 8-MP, f/2.2 Rear: 1 Camera
  • 2500 mAh

Specifications Highlights
Product NameLumia 635Lumia 640
ProductLumia 635 (2014), Price: 124 USD at AmazonLumia 640 (2015), Price: 146 USD at Amazon
Display4.5" 854x480 IPS LCD 5" 1280x720 IPS LCD
Rear Camera(s)
  • 5-MP (Primary)
  • 8-MP f/2.2 (Primary)
Selfie Camera(s)
    • 1-MP
    Computing
    • Snapdragon 400 SoC
    • 0.5GB RAM
    • 8GB Storage
    • MicroSD (128GB max.)
    • Snapdragon 400 SoC
    • 1GB RAM
    • 8GB Storage
    • MicroSD (128GB max.)
    Battery1830 mAh2500 mAh
    DesignIP Rating, 134g (4.7oz), 129.5x66.7x9.2 mm (5.10 x 2.63 x 0.36 inches)IP Rating, 145g (5.1oz), 141.3x72.2x8.8 mm (5.56 x 2.84 x 0.35 inches)
    Price (Market)$124$146
    Advertising
    Display
    Product NameLumia 635Lumia 640
    TypeIPS LCDIPS LCD
    Diagonal (inches)4.5"5"
    Display/Body Ratio64.6%67.6%
    Resolution854x4801280x720
    Sharpness (PPI)218 PPI294 PPI
    Display Glass TypeGorilla Glass 3Gorilla Glass 3
    Features
    • Multitouch
    • Multitouch
    Color Depth24 bit (16,777,216 Colors)24 bit (16,777,216 Colors)
    Primary Camera
    Product NameLumia 635Lumia 640
    Megapixel5-MP8-MP
    Aperturef/2.2
    Sensor SizeSmall
    Hardware Features
    • Flash
    Video Resolutions
    • 720p/30fps
    • 1080p/30fps
    Battery
    Product NameLumia 635Lumia 640
    Battery TypeLi-IonLi-Ion
    Battery Capacity (mAh)1830 mAh2500 mAh
    Battery Features
    • Removable
    Talk Time12 hours26.5 hours
    Music Playback Time58 hours
    Computing
    Product NameLumia 635Lumia 640
    Processor BrandQualcommQualcomm
    Processor NameSnapdragon 400Snapdragon 400
    Processor ModelMSM8926
    Processor # Cores44
    Main Processor Frequency (GHz)1.2 GHz1.2 GHz
    RAM Options0.5GB1GB
    Internal Storage Options8GB8GB
    Memory Card TypeMicroSDMicroSD
    Mem. Card Max. Size128GB128GB
    Operating System + VersionWindows 8.1Windows 8.1
    Communications
    Product NameLumia 635Lumia 640
    LTE Category (Download)LTE CAT3 102/51 MbpsLTE CAT4 150 Mbps
    Modem Features
    • GPRS
    • EDGE
    • LTE
    • GPRS
    • EDGE
    • LTE
    WiFi Speed
    • b
    • g
    • n
    • b
    • g
    • n
    WiFi Features
    • Hotspot
    • Hotspot
    Bluetooth VersionBluetooth 4.0Bluetooth 4.0
    Bluetooth Features
    • A2DP
    • A2DP
    NFC Features
    • NFC Supported
    Connector TypeMicro USBMicro USB
    SAR US Head0.97 W/Kg
    SAR US Body0.77 W/Kg
    SAR EU Head0.75 W/Kg
    SAR EU Body0.79 W/Kg
    Sim Card 0
    Product NameLumia 635Lumia 640
    NameSIM0SIM0
    SIM TypeMicro SIMMicro SIM
    Multimedia
    Product NameLumia 635Lumia 640
    Multimedia Features
    • DLNA
    Audio Alerts
    • VIBRATION
    • MP3
    • WAV
    • VIBRATION
    • MP3
    • WAV
    Audio Features
    • Loudspeaker
    • 3.5mm Port
    • Phone Noise Cancellation
    • FM Radio
    • Loudspeaker
    • 3.5mm Port
    • FM Radio
    Audio Formats
    • MP3
    • WAV
    • WMA
    • MP3
    • WAV
    • WMA
    Video Formats
    • MP4
    • WMV
    • H.264
    • H.263
    • MP4
    • WMV
    • H.264
    Sensors
    • Accelerometer
    • GPS
    • A-GPS
    • GLONASS
    • Accelerometer
    • Compass
    • GPS
    • A-GPS
    • GLONASS
    • Proximity

    Nokia Lumia 635 vs. Microsoft Lumia 640 Specs & Speed Benchmarks

    Antutu

    Higher is better

    GFXBench T-Rex (Offscr.)

    Higher is better

    Battery Capacity (mAh)

    Higher is better