Walton Primo EF4 specs.
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General characteristics Walton Primo EF4
Chip:
Spreadtrum SC7731G
Process technology:
28 nm
CPU:
Central processing unit
Central processing unitARM Cortex-A7
CPU bits:
32 bit
Instruction set:
ARMv7
Level 1 cache memory (L1):
32 KB + 32 KB
Level 2 cache memory (L2):
512 KB
CPU cores:
4
CPU frequency:
1200 MHz
GPU:Graphics Processing Unit
Graphics Processing UnitARM Mali-400 MP2
GPU cores:
2
GPU frequency:
400 MHz
RAM capacity:
1 GB
Operating system (OS):
Android 6.0 Marshmallow
SIM card type:
Micro-SIM (3FF - third form factor, since 2003, 15.00 x 12.00 x 0.76 mm)
Number of SIM cards:
2
Features:
Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)
Display Walton Primo EF4
Type/technology:
TFT
Screen Size:This diagonal display size is usually measured in inches.
This diagonal display size is usually measured in inches.5 in
Width:
2.45 in
Height:
4.36 in
Aspect ratio:
1.779
Screen Resolution:Screen resolution refers to the size of the image received on the screen in pixels
Screen resolution refers to the size of the image received on the screen in pixels480 x 854 pixels
Pixel density:
196 ppi
Color depth:
24 bit
16777216 colors
16777216 colors
Display area:
65 %
Other features:
Capacitive
Multi-touch
Multi-touch
Sensors Walton Primo EF4
Sensors:
Accelerometer
Primary camera Walton Primo EF4
Sensor type:
CMOS BSI (backside illumination)
Flash type:
LED
Image resolution:
2592 x 1944 pixels
5.04 MP
5.04 MP
Video resolution:
1280 x 720 pixels
0.92 MP
0.92 MP
Video FPS:
30 fps
Features:
Autofocus
Continuous shooting
Digital zoom
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Continuous shooting
Digital zoom
Geotagging
Panorama
HDR
Touch focus
Face detection
White balance settings
ISO settings
Exposure compensation
Self-timer
Scene mode
Secondary camera Walton Primo EF4
Sensor type:
CMOS BSI (backside illumination)
Image resolution:
1600 x 1200 pixels
1.92 MP
1.92 MP
Video resolution:
640 x 480 pixels
0.31 MP
0.31 MP
Video FPS:
30 fps
Memory Walton Primo EF4
Storage:
8 GB
Types:
microSD
microSDHC
microSDXC
microSDHC
microSDXC
Connectivity Walton Primo EF4
GSM:
GSM 850 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
W-CDMA:
W-CDMA 2100 MHz
Mobile network technologies:
UMTS (384 kbit/s )
EDGE
GPRS
HSPA+
EDGE
GPRS
HSPA+
Tracking/Positioning:
GPS
A-GPS (abbreviated generally as A-GPS and less commonly as aGPS) is a system that often significantly improves startup performance-i.e., time-to-first-fix (TTFF), of a GPS satellite-based positioning system. A-GPS is extensively used with GPS-capable cellular phones, as its development was accelerated by the U.S. FCC 911 requirement to make cell phone location data available to emergency call dispatchers.
A-GPS (abbreviated generally as A-GPS and less commonly as aGPS) is a system that often significantly improves startup performance-i.e., time-to-first-fix (TTFF), of a GPS satellite-based positioning system. A-GPS is extensively used with GPS-capable cellular phones, as its development was accelerated by the U.S. FCC 911 requirement to make cell phone location data available to emergency call dispatchers.
Wi-Fi:Wireless lan technology
Wireless lan technology802.11b (IEEE 802.11b-1999)
802.11g (IEEE 802.11g-2003)
802.11n (IEEE 802.11n-2009)
Wi-Fi Hotspot
802.11g (IEEE 802.11g-2003)
802.11n (IEEE 802.11n-2009)
Wi-Fi Hotspot
Bluetooth:Bluetooth is used to exchange data between nearby mobile devices.
Bluetooth is used to exchange data between nearby mobile devices.4.0
Features:
A2DP (Advanced Audio Distribution Profile)
Connector type:
Micro USB
USB:Universal Serial Bus
Universal Serial Bus2.0
Features:
Charging
Mass storage
Mass storage
Connectivity:
Computer sync
OTA sync
Tethering
OTA sync
Tethering
Browser:
HTML
HTML5
CSS 3
HTML5
CSS 3
Multimedia Walton Primo EF4
Speaker:
Loudspeaker
Radio:
Yes
Headphone jack:
Yes
Audio file formats/codecs:
AAC (Advanced Audio Coding)
AMR / AMR-NB / GSM-AMR (Adaptive Multi-Rate, .amr, .3ga)
eAAC+ / aacPlus v2 / HE-AAC v2
MIDI
MP3 (MPEG-2 Audio Layer II, .mp3)
OGG (.ogg, .ogv, .oga, .ogx, .spx, .opus)
WMA (Windows Media Audio, .wma)
WAV (Waveform Audio File Format, .wav, .wave)
AMR / AMR-NB / GSM-AMR (Adaptive Multi-Rate, .amr, .3ga)
eAAC+ / aacPlus v2 / HE-AAC v2
MIDI
MP3 (MPEG-2 Audio Layer II, .mp3)
OGG (.ogg, .ogv, .oga, .ogx, .spx, .opus)
WMA (Windows Media Audio, .wma)
WAV (Waveform Audio File Format, .wav, .wave)
Video file formats/codecs:
3GPP (3rd Generation Partnership Project, .3gp)
AVI (Audio Video Interleaved, .avi)
MP4 (MPEG-4 Part 14, .mp4, .m4a, .m4p, .m4b, .m4r, .m4v)
AVI (Audio Video Interleaved, .avi)
MP4 (MPEG-4 Part 14, .mp4, .m4a, .m4p, .m4b, .m4r, .m4v)
Design Walton Primo EF4
Width:
73.28 mm
Height:
145.09 mm
Thickness:
10.35 mm
Weight:
155 g
Volume:
110.04 cm³
Colors:
Black
White
White
Body materials:
Plastic
Battery Walton Primo EF4
Capacity:
2300 mAh
2G stand-by time:
210 h
e
3G talk time:
11 h
3G stand-by time:
210 h
Features:
Removable
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