Comparison of Microsoft Lumia 640 LTE Dual Sim and Nokia Lumia 925 smartphones based on their characteristics
Manufacturer and Model
- Manufacturer
- Microsoft
- Nokia
- Phone model
- Lumia 640 LTE Dual Sim
- Lumia 925
- Year of release
- 2015
- 2013
Appearance
- Case type
- Monoblock
- Monoblock
- Body length
- 141 mm
- 129 mm
- Body width
- 72 mm
- 71 mm
- Body thickness
- 8.8 mm
- 8.5 mm
- Weight
- 145 g
- 139 g
- Volume
- 89.78 cm³
- 77.41 cm³
- Body materials and finishes
-
- Plastic
-
- Aluminium alloy
- Plastic
Processor (CPU)
- Processor model
-
- Qualcomm Snapdragon 400 MSM8226
-
- Qualcomm MSM8960 Snapdragon
- CPU clock speed
- 1200 MHz
- 1500 MHz
- Number of processor cores
- 4
- 2
- Level 1 cache (L1)
- 16 + 16 kB
- 16 + 16 kB
- Level 2 cache (L2)
- 1024 kB
- 1024 kB
- Processor size
- 32 bits
- 32 bits
- Instruction set architecture
- ARMv7
- ARMv7
- Manufacturing process
- 28 nm
- 28 nm
Graphics Processor (GPU)
- GPU
- GPU model
-
- Qualcomm Adreno 305
-
- Adreno 225
- Number of GPU cores
- 1
Primary storage (RAM)
- The amount of RAM
- 1 GB
- 1 GB
- RAM type
- LPDDR2
- RAM frequency
- 500 MHz
- Number of RAM channels
- 2
Internal storage
- Built-in memory
-
- 8 GB
-
- 16 GB
SD card
- Types of Supported Memory Cards
-
- microSDXC
- microSDHC
- microSD
- Maximum expandable memory
- 128 GB
Mainboard
- Chipset
-
- Qualcomm Snapdragon 400 MSM8926
-
- Qualcomm Snapdragon S4 Plus MSM8960
Operating system
- Operating system
- Windows Phone 8.1
- Windows Phone 8
Battery
- Battery capacity
- 2500
- 2000
- Battery type
- Li-Ion
- Li-Ion
- Removable battery
- Wireless battery charging
- Charging the battery from USB
- Call duration in GSM networks
- 26 h
- 18 h 18 min
- Standby time in GSM networks
- 864 h
- 432 h
- Call duration in UMTS (WCDMA) networks
- 17 h 30 min
- 12 h
- Standby time on UMTS (WCDMA) networks
- 864 h
- 440 h
- Duration of listening to music
- 55 h
- Duration of using Wi-Fi
- 7.2 h
Screen
- Screen diagonal
- 5 in
- 4.5 in
- Screen resolution
- 1280 x 720 pixels
- 1280 x 768 pixels
- Resolution formats
-
- HD
-
- HD
- Pixel density
- 294 ppi
- 332 ppi
- Screen technology
- IPS
- AMOLED
- Color depth
- 24 bit
- 24 bit
- Touch screen
- Touch screen type
- Capacitive
- Capacitive
- Anti-scratch screen
- Glass screen
- Aspect ratio
- 1.778
- 1.667
- Auto-rotate screen
- Ambient light sensor
- Proximity sensor
Main photo/video camera
- Camera megapixels
- 8 Mp
- 8.7 Mp
- Maximum photo resolution
- 3264 x 2448 pixels
- 3264 x 2448 pixels
- Shooting resolution formats
-
- Quad HD
- Full HD
- HD
-
- Ultra HD
- Quad HD
- Full HD
- HD
- The presence of a flash
- Flash type
- LED
- Dual LED
- Digital zoom
- 4 X
- Photomatrix type
- CMOS BSI
- CMOS BSI
- Photomatrix size
- 3.6 x 2.7 mm
- 4.8 x 3.6 mm
- Photomatrix pixel size
- 1.103 μm
- 1.351 μm
- Crop factor
- 9.61
- 7.21
- Aperture
- f/2.2
- f/2
- Number of lens elements
- 6
- Shooting settings
- Autofocus
- Auto exposure
- Face detector
- Panoramic photography
- HDR photography
- Viewfinder
- Continuous photography
- Touch focus
- Exposure compensation
- Digital image stabilization
- Optical image stabilization
- White balance
- ISO setting
- Scene selection
- Other photo settings
-
- Serial shooting
- Panoramic shooting
- Hdr shooting
- Face detection
-
- Story modes: auto
- Night portrait
- Close-up
- White balance modes: cloudy
- Incandescent light bulb
- Daylight
- Iso 100
- Iso 200
- Iso 400
- Iso 800
- Iso 1600
- Iso 3200
- Video capability
- Maximum video resolution
- 1920 x 1080 pixels
- 1920 x 1080 pixels
- Movie speed
- 30 fps
- 30 fps
- Digital video zoom
- 4 X
- Movie settings
- Movie settings list
-
- White balance
- Color effects
- Hdr
- Scene selection mode
Front photo/video camera
- Front camera megapixels
- 0.9 Mp
- 1.3 Mp
- Maximum photo resolution
- 1265 x 712 pixels
- 1520 x 855 pixels
- Aperture
- f/2.4
- f/2.4
- Front camera video
- Maximum video resolution
- 1280 x 720 pixels
- 1280 x 720 pixels
SIM card and calls
- Number of SIM-cards
- 2
- 1
- Mode of operation of multiple SIM-cards
- Alternating
- SIM card type
- Micro-SIM
- Micro-SIM
- MP3 ringtones
- Polyphonic ringtones
- Vibration mode
- Speakerphone
- Conference call
- Speed dial
- Video calls
- Second microphone
- Autodial
- Noise reduction during a call
- Ability to mute the microphone during a call
- Extended phone book
- Contacts in the phone book
- Unlimited
- Unlimited
- Data exchange between SIM card and internal memory
- VoIP telephony
Mobile communications
- Cellular generation
- 4G
- 4G
- GSM support
- GSM frequencies
-
- GSM 850 MHz
- GSM 900 MHz
- GSM 1800 MHz
- GSM 1900 MHz
-
- GSM 850 MHz
- GSM 900 MHz
- GSM 1800 MHz
- GSM 1900 MHz
- UMTS support
- UMTS frequencies
-
- UMTS 850 MHz
- UMTS 900 MHz
- UMTS 1900 MHz
- UMTS 2100 MHz
-
- UMTS 850 MHz
- UMTS 900 MHz
- UMTS 1700 MHz
- UMTS 1900 MHz
- UMTS 2100 MHz
- LTE support
- LTE frequencies
-
- LTE 700 MHz
- LTE 800 MHz
- LTE 850 MHz
- LTE 900 MHz
- LTE 1700 MHz
- LTE 1800 MHz
- LTE 1900 MHz
- LTE 2100 MHz
- LTE 2600 MHz
- LTE-TDD 2300 MHz
- LTE-TDD 2600 MHz
-
- LTE 800 MHz
- LTE 850 MHz
- LTE 900 MHz
- LTE 1800 MHz
- LTE 1900 MHz
- LTE 2100 MHz
- LTE 2600 MHz
- TDD LTE support
Internet data transmission standards
- LTE standards
-
- LTE Cat 4
-
- LTE Cat 3
- Data transmission standards
-
- HSPA+
- HSUPA
- HSDPA
- EDGE
- GPRS
-
- HSPA+
- HSUPA
- HSDPA
- EDGE
- GPRS
Wi-Fi
- Built-in Wi-Fi
- Wi-Fi standards
-
- 802.11b
- 802.11g
- 802.11n
-
- 802.11a
- 802.11b
- 802.11g
- 802.11n
- 802.11n 5GHz
- Wi-Fi hotspot mode
- Dual band Wi-Fi
USB
- USB connector
- USB connector type
- Micro USB
- Micro USB
- USB standard
- 2.0
- 2.0
- USB Mass Storage support
Bluetooth
- Built-in Bluetooth
- Bluetooth standard
- 4.0
- 3.0
- A2DP support
- AVRCP support
- Other Bluetooth profiles
-
- GATT
- HID
- MAP
- HFP
- OPP
- PAN
- PBAP
-
- OPP
- HFP
- PBAP
Navigation and positioning
- Built-in GPS
- A-GPS support
- Installed GLONASS
- Built-in digital compass
- Cell ID location
Radio
- Built-in radio receiver
- Radio range
- 87.5 - 108 МГц
- 87.5 - 108.0
- RDS support
- DRM support
Sensors and gauges
- Ambient light sensor
- Proximity sensor
- Accelerometer
- Orientation and rotation sensor
- Gyroscope
- Magnetometer
Connectors and interfaces
- USB connector
- Micro USB
- Micro USB
- TRS jack (mini/micro jack)
- 3.5 mm
- 3.5 mm
- Wireless NFC
Images
- Supported image formats
-
- PNG
- JPG
- EXIF
- GIF
-
- PNG
- JPEG
- EXIF
- BMP
- Installed image editor
- Geo tags
- DLNA support
- MTP support
Video
- Installed video player
- Supported video formats
-
- MP4
- MPEG-4
- AVI
- 3GPP
- 3GPP
- H.263
- H.264
- WMV
-
- MP4
- MPEG-4
- AVI
- 3GPP
- 3GPP
- 3GPP2
- QuickTime
- MOV
- H.263
- H.264
- WMV
- Video resolution formats
-
- Full HD
- HD
-
- Full HD
- HD
- Streaming video
- Installed video editor
- Geo tags
Audio
- Installed audio player
- Supported audio formats
-
- AAC
- eAAC+
- AMR
- AMR-NB
- MIDI
- MP3
- WMA
- WAV
-
- AAC
- AAC+
- eAAC+
- AMR
- AMR-NB
- AMR-WB
- M4A
- MIDI
- MP3
- WMA
- WAV
- MP3 support
- Streaming audio
- Dictaphone
- Voice notes
- TRS jack (mini/micro jack)
- 3.5 mm
- 3.5 mm
Control elements
- Touch input
- Multitouch
- Pinch zoom
- Russified input
Documents and office
- Installed Organizer (PIM)
- Office document support
- Supported document formats
-
-
- IMAP4 protocol support
- Convert text to speech
- Convert speech to text
Connectivity and synchronization
- PC connection
- Tethering support
- Synchronization over the mobile network
- OTA sync
- Synchronization with services
-
- MS Exchange
- Gmail
- Windows Live Messenger
- Youtube Messenger
- Linkedln
- OneDrive
-
- MS Outlook
- MS Exchange
- Gmail
- Google Talk
- Windows Live Messenger
- Yahoo! Messenger
- Skype IM
- YouTube
Software features
- Installed browser
-
- HTML
- HTML5
- CSS3
- WAP
-
- HTML
- HTML5
- CSS3
- WAP
Receiving and sending SMS
- SMS messages
- SMS T9 support
- SMS output in the form of a chat
- MMS support
Security
- Remote phone lock
- Remotely wipe data from your phone
- Remote phone search
- Data encryption in the phone
- Installed VPN
Additional features
- Standalone mode (flight mode)
SAR level
- SAR level
- 0.81 W/kg
