Karbonn Alfa A91 Champ - Technical characteristics and specifications

Alfa A91 Champ technical characteristics

About the device:

Karbonn Alfa A91 Champ is a mobile/cell phone with dimensions of 64.4 mm (millimeters), 6.44 cm (centimeters), 0.21 ft (feet), 2.54 in (inches), a weight of 112 grams, and a screen resolution of 480 x 800 pixels.

It has a processor ARM Cortex-A7, a graphics card (GPU) ARM Mali-400 MP and an internal memory of 4 GB (gigabytes) expandable by memory card microSD, microSDHC .

The Karbonn Alfa A91 Champ comes from the factory with the Android 5.1 Lollipop operating system.

Technical information

Property	Value
Brand	Karbonn
Model	Alfa A91 Champ

Connectivity
2G connectivity	GSM 900 MHz, GSM 1800 MHz
3G connectivity	W-CDMA 2100 MHz
4G connectivity	LTE 850 MHz, LTE 1800 MHz, LTE-TDD 2300 MHz (B40)
5G connectivity	No

Body
Dimensions	64.4 mm (millimeters), 6.44 cm (centimeters), 0.21 ft (feet), 2.54 in (inches)
Height	127 mm (millimeters), 12.7 cm (centimeters), 0.42 ft (feet), 5 in (inches)
Thickness	10.6 mm (millimeters), 1.06 cm (centimeters), 0.03 ft (feet), 0.42 in (inches)
Volume	86.7 cm
Weight gr.	112
Weight oz	0.25
SIM	Mini-SIM (2FF - second form factor, since late 1990s, 25.00 x 15.00 x 0.76 mm)
Number of SIMS	2
Colors	Gold, Black, Brown
Body materials	Plastic

Screen
Type of screen	IPS
Screen resolution	480 x 800 pixels
Display width	2.06 in (inches), 52.27 mm (millimeters), 5.23 cm (centimeters)
Display height	3.43 in (inches), 87.12 mm (millimeters), 8.71 cm (centimeters)
Aspect ratio	1.667:1, 5:3
Pixel density	233 ppi (pixels per inch), 91 ppcm (pixels per centimeter)
Color depth	24 bit, 16777216 colors
Display area	55.86 % (percent)
Crystal	2.5D curved glass screen, Full Lamination Technology

Platform
OS	Android 5.1 Lollipop
CPU	ARM Cortex-A7
SoC	Spreadtrum SC7731G
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
Internal memory	4 GB (gigabytes)
RAM type	2
RAM channels	400 MHz (megahertz)
RAM frequency	512 MB (megabytes)

Cameras
Sensor model	CMOS (complementary metal-oxide semiconductor)
Sensor type	LED
Sensor size	1600 x 1200 pixels, 1.92 MP (megapixels)
Sensor Pixel size	1280 x 720 pixels, 0.92 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	Pixel size - 1.4 ?m
Video Resolution	1280 x 720 pixels, 0.92 MP (megapixels)
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, Self-timer, Scene mode
Aperture secondary camera	640 x 480 pixels, 0.31 MP (megapixels)
Resolution secondary camera	30 fps (frames per second)
Video resolution secondary camera	640 x 480 pixels, 0.31 MP (megapixels)
FPS video secondary camera	30 fps (frames per second)
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