Manufacturer and Model

Manufacturer
Lenovo
Nokia
Phone model
A1000
Lumia 638
Year of release
2015
2014

Appearance

Case type
Monoblock
Monoblock
Body length
125 mm
130 mm
Body width
64 mm
67 mm
Body thickness
10.6 mm
9.2 mm
Weight
132 g
136 g
Volume
84.46 cm³
79.47 cm³
Body materials and finishes
  • Plastic
  • Plastic
Colors

Processor (CPU)

Processor model
  • Spreadtrum SC7731
  • Qualcomm Snapdragon 400
CPU clock speed
1300 MHz
1200 MHz
Number of processor cores
4
4
Level 1 cache (L1)
32 + 32 kB
16 + 16 kB
Level 2 cache (L2)
512 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
  • Mali-400 MP2
  • Adreno 305
GPU clock speed
400 MHz
Number of GPU cores
2
1

Primary storage (RAM)

The amount of RAM
1 GB
1 GB

Internal storage

Built-in memory
  • 8 GB
  • 8 GB

SD card

Types of Supported Memory Cards
  • microSDHC
  • microSD
  • microSDXC
  • microSDHC
  • microSD
Maximum expandable memory
32 GB
32 GB

Mainboard

Chipset
  • Spreadtrum SC7731G
  • Qualcomm Snapdragon 400 MSM8926

Operating system

Operating system
Android 5.0
Windows Phone 8

Battery

Battery capacity
2050
1830
Battery type
Li-Ion
Li-Ion
Removable battery
Charging the battery from USB
Call duration in GSM networks
9 h
12 h
Standby time in GSM networks
300 h
648 h
Call duration in UMTS (WCDMA) networks
9 h
14 h
Standby time on UMTS (WCDMA) networks
300 h
648 h

Screen

Screen diagonal
4 in
4.5 in
Screen resolution
800 x 480 pixels
854 x 480 pixels
Pixel density
233 ppi
218 ppi
Screen technology
TFT
IPS
Color depth
24 bit
24 bit
Touch screen
Touch screen type
Capacitive
Capacitive
Anti-scratch screen
Aspect ratio
1.667
1.779
Auto-rotate screen
Ambient light sensor
Proximity sensor

Main photo/video camera

Camera megapixels
5 Mp
5 Mp
Maximum photo resolution
2560 x 1920 pixels
2592 x 1944 pixels
Shooting resolution formats
  • Quad HD
  • Full HD
  • HD
  • Quad HD
  • Full HD
  • HD
The presence of a flash
Flash type
LED
Photomatrix type
CMOS
Photomatrix size
3.6 x 2.7 mm
Photomatrix pixel size
1.389 μm
Crop factor
9.61
Aperture
f/2.4
Shooting settings
Autofocus
Face detector
Panoramic photography
HDR photography
Viewfinder
Continuous photography
Touch focus
Exposure compensation
Self-timer
Digital image stabilization
White balance
ISO setting
Scene selection
Other photo settings
  • Serial shooting
  • Panoramic shooting
  • Hdr shooting
  • Face detection
Video capability
Maximum video resolution
1280 x 720 pixels
1280 x 720 pixels
Movie speed
30 fps
30 fps
Movie settings
Movie settings list
  • White balance
  • Color effects

Front photo/video camera

Front camera megapixels
0.3 Mp
Maximum photo resolution
730 x 411 pixels
Front camera video
Maximum video resolution
640 x 480 pixels

SIM card and calls

Number of SIM-cards
2
1
Mode of operation of multiple SIM-cards
Alternating
SIM card type
Default
Default
MP3 ringtones
Polyphonic ringtones
Vibration mode
Speakerphone
Conference call
Speed dial
Video calls
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

Mobile communications

Cellular generation
3.5G
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 1900 MHz
  • UMTS 2100 MHz
TD-SCDMA support
TD-SCDMA frequencies
  • TD-SCDMA MHz
  • TD-SCDMA MHz
  • TD-SCDMA MHz
  • TD-SCDMA MHz
LTE support
LTE frequencies
  • LTE 1800 MHz
  • LTE 2600 MHz
  • LTE-TDD 1900 MHz
  • LTE-TDD 2300 MHz
  • LTE-TDD 2500 MHz
  • LTE-TDD 2600 MHz
TDD LTE support

Internet data transmission standards

LTE standards
  • LTE Cat 4
  • LTE Cat 4
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
  • 802.11b
  • 802.11g
  • 802.11n
Wi-Fi hotspot mode

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
2.1
4.0
A2DP support
AVRCP support
Other Bluetooth profiles
  • apt-X

Navigation and positioning

Built-in GPS
A-GPS support
Installed GLONASS
Cell ID location

Radio

Built-in radio receiver
Radio range
87.5 - 108 МГц
87.5 - 108 МГц

Sensors and gauges

Ambient light sensor
Proximity sensor
Accelerometer
Orientation and rotation sensor

Connectors and interfaces

USB connector
Micro USB
Micro USB
TRS jack (mini/micro jack)
3.5 mm
3.5 mm

Images

Supported image formats
  • PNG
  • JPG
  • EXIF
  • GIF
  • PNG
  • JPG
  • EXIF
  • GIF
Installed image editor
Geo tags
DLNA support

Video

Installed video player
Supported video formats
  • MP4
  • MPEG-4
  • AVI
  • 3GPP
  • 3GPP
  • Xvid
  • WMV
  • MP4
  • MPEG-4
  • AVI
  • 3GPP
  • 3GPP2
  • QuickTime
  • H.263
  • H.264
  • WMV
  • WMV9
Video resolution formats
  • 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
  • AMR
  • AMR-NB
  • AMR-WB
  • M4A
  • 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
  • PDF
  • PDF
Email
IMAP4 protocol support
Convert speech to text

Connectivity and synchronization

PC connection
Tethering support
Synchronization over the mobile network
OTA sync
Synchronization with services
  • Gmail
  • Gtalk
  • Facebook
  • Twitter
  • Youtube
  • Google search
  • Google maps
  • MS Outlook
  • MS Exchange
  • Facebook
  • Twitter
  • Youtube
  • Internet Explorer

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

Installed VPN

Additional features

Standalone mode (flight mode)

SAR level

SAR level
0.64 W/kg