DEXP B255 - Technical characteristics and specifications

B255 technical characteristics

About the device:

DEXP B255 is a mobile/cell phone with dimensions of 71.5 mm (millimeters), 7.15 cm (centimeters), 0.23 ft (feet), 2.81 in (inches), and a screen resolution of 640 x 1280 pixels.

It has a processor ARM Cortex-A7, a graphics card ARM Mali-400 MP and an internal memory of 8 GB (gigabytes) expandable by memory card microSD, microSDHC, microSDXC .

The DEXP B255 comes from the factory with the Android 7.0 Nougat operating system.

Technical information

Property	Value
Brand	DEXP
Model	B255

Connectivity
2G connectivity	GSM 850 MHz, GSM 900 MHz, GSM 1800 MHz, GSM 1900 MHz
3G connectivity	UMTS 900 MHz, UMTS 2100 MHz
4G connectivity	LTE 800 MHz, LTE 1800 MHz, LTE 2100 MHz, LTE 2600 MHz
5G connectivity	No

Body
Dimensions	71.5 mm (millimeters), 7.15 cm (centimeters), 0.23 ft (feet), 2.81 in (inches)
Height	147.8 mm (millimeters), 14.78 cm (centimeters), 0.48 ft (feet), 5.82 in (inches)
Thickness	8.8 mm (millimeters), 0.88 cm (centimeters), 0.03 ft (feet), 0.35 in (inches)
Volume	93 cm
SIM	Nano-SIM (4FF - fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm), Nano-SIM / microSD
Number of SIMS	2
Colors	Gray
Body materials	Plastic, Metal
Certifications	IP55

Screen
Type of screen	IPS
Screen resolution	640 x 1280 pixels
Display width	2.46 in (inches), 62.48 mm (millimeters), 6.25 cm (centimeters)
Display height	4.92 in (inches), 124.95 mm (millimeters), 12.5 cm (centimeters)
Aspect ratio	2:1, 2:1 (18:9)
Pixel density	260 ppi (pixels per inch), 102 ppcm (pixels per centimeter)
Color depth	24 bit, 16777216 colors
Display area	74.11 % (percent)
Crystal	Oleophobic (lipophobic) coating

Platform
OS	Android 7.0 Nougat
CPU	ARM Cortex-A7
SoC	MediaTek MT6580A
Technology	28 nm (nanometers)
Bits	32 bit
Instruction set	ARMv7
Cores	32 KB + 32 KB (kilobytes)
CPU Frequency	512 KB (kilobytes), 0.5 MB (megabytes)
GPU	ARM Mali-400 MP

Storage and memory
Memory card	microSD, microSDHC, microSDXC
Internal memory	8 GB (gigabytes)
RAM type	2
RAM channels	1 GB (gigabytes)
RAM frequency	LPDDR3

Cameras
Sensor model	CMOS (complementary metal-oxide semiconductor)
Sensor type	LED
Sensor size	3264 x 2448 pixels, 7.99 MP (megapixels)
Sensor Pixel size	1920 x 1080 pixels, 2.07 MP (megapixels)
Aperture	Autofocus, Continuous shooting, Digital zoom, Geotagging, Panorama, HDR, Touch focus, Face detection, White balance settings, ISO settings, Exposure compensation, Self-timer, Scene mode
Resolution	Autofocus, Continuous shooting, Digital zoom, Digital image stabilization, Geotagging, Panorama, HDR, Touch focus, Face detection, White balance settings, Exposure compensation, Self-timer, Scene mode
Video Resolution	Interpolated resolution - 13 MP, 5-element lens, Blue filter glass
FPS	30 fps (frames per second)
Video features	Autofocus, Continuous shooting, Digital zoom, Digital image stabilization, Geotagging, Panorama, HDR, Touch focus, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode
Aperture secondary camera	1600 x 1200 pixels, 1.92 MP (megapixels)
Resolution secondary camera	30 fps (frames per second)
Video resolution secondary camera	Interpolated resolution - 5 MP
FPS video secondary camera	Interpolated resolution - 5 MP
Audio connector	Yes

Communications
WLAN	802.11b (IEEE 802.11b-1999), 802.11g (IEEE 802.11g-2003), 802.11n (IEEE 802.11n-2009), Wi-Fi Hotspot
Bluetooth	4.0
GPS	GPS, A-GPS
Radio	Yes
USB	Micro USB
Sensors	Accelerometer