Karbonn Smart A12 Star vs Samsung Galaxy Alpha: specs comparison

Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

Display technology

OLED versus LCD

Smart A12 Star:

LCD

Galaxy Alpha:

OLED
Weight

Galaxy Alpha: 15 g lighter

Smart A12 Star:

130 g

Galaxy Alpha:

115 g
Width

Smart A12 Star: 1.3 mm narrower

Smart A12 Star:

64.2 mm

Galaxy Alpha:

65.5 mm
Screen diagonal

Smart A12 Star: 0.7 in smaller diagonal

Smart A12 Star:

4 in

Galaxy Alpha:

4.7 in
Depth

Galaxy Alpha: 3.4 mm thinner

Smart A12 Star:

10.1 mm

Galaxy Alpha:

6.7 mm
Height

Smart A12 Star: 8.2 mm shorter

Smart A12 Star:

124.2 mm

Galaxy Alpha:

132.4 mm

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

1. Smart A12 Star

Height:

124.2 mm
Width:

64.2 mm
Depth:

10.1 mm +3.4 mm versus Galaxy Alpha
2. Galaxy Alpha

Height:

132.4 mm +8.2 mm versus Smart A12 Star
Width:

65.5 mm +1.3 mm versus Smart A12 Star
Depth:

6.7 mm

Weight

Bars start at zero and share a scale within this chart.

1. Smart A12 Star

130 g

+15 g versus Galaxy Alpha
2. Galaxy Alpha

115 g

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

1. Smart A12 Star

Screen diagonal:

4 in

Aspect ratio (height:width):

5:3

Approximate rectangular screen area:

45.5 cm²
2. Galaxy Alpha

Screen diagonal:

4.7 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

60.9 cm²

Galaxy Alpha has approximately 33.7% more rectangular screen area than Smart A12 Star.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

Recorded RAM for Smart A12 Star, Galaxy Alpha, compared at the same storage capacity.
Storage	Smart A12 Star	Galaxy Alpha
32 GB	Unknown	2 GB RAM

Smart A12 Star: Original memory entry

4 GB · 512 MB RAM

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. Smart A12 Star

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 32 GB

2. Galaxy Alpha

NFC:: Yes
Headphone jack:: Yes
Memory card support:: No

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

1. Smart A12 Star

1400 mAh
2. Galaxy Alpha

1860 mAh

+460 mAh versus Smart A12 Star

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. Smart A12 Star2. Galaxy Alpha

Everyday essentials

Everyday essentials — specifications for Smart A12 Star, Galaxy Alpha.
Specification	Smart A12 Star	Galaxy Alpha
Dimensions (HxWxD)	124.2 Х 64.2 Х 10.1 mm	132.4 Х 65.5 Х 6.7 mm
Weight	130 g	115 g
Technology	IPS LCD	Super AMOLED
Screen size	4" inch	4.7" inch
Screen resolution	480 x 800 px	720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	4 GB 512 MB RAM	32 GB 2 GB RAM
Memory card support	microSD up to 32 GB	No
Battery Capacity is not battery life. No endurance test is implied.	1400 mAh Li-Ion	1860 mAh Removable Li-Ion
Operating system OS	Android 4.4.2 (KitKat)	Android 4.4.4 (KitKat) upgradable to 5.0.2 (Lollipop)
Chipset	Unknown	Exynos 5430 Octa (20 nm)
NFC	Unknown	Yes
Headphone jack	Yes	Yes

Display

Display — specifications for Smart A12 Star, Galaxy Alpha.
Specification	Smart A12 Star	Galaxy Alpha
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	45.5 cm2	60.9 cm2
Screen format	5:3 (height:width)	16:9 (height:width)
Screen to body ratio	57.1%	70.2%
PPI /points per inch/	233 PPI	312 PPI
Screen protection	Unknown	Corning Gorilla Glass 4

Camera and Video

Camera and Video — specifications for Smart A12 Star, Galaxy Alpha.
Specification	Smart A12 Star	Galaxy Alpha
Rear camera, main	5 MP Single	12 MP Single
Camera specs	5 MP	12 MP f/2.2 31mm (standard) AF
Functions	LED flash	LED flash panorama HDR
Video	Yes	2160p@30fps 1080p@60fps 720p@120fps
Front camera, selfie	0.3 MP Single	2.1 MP Single
Specifications	VGA	2.1 MP

Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for Smart A12 Star, Galaxy Alpha.
Specification	Smart A12 Star	Galaxy Alpha
Processor CPU	Dual-core 1.2 GHz	Octa-core (4x1.8 GHz Cortex-A15 & 4x1.3 GHz Cortex-A7)
Graphics processor GPU	Unknown	Mali-T628 MP6
Antutu 7 score *	Unknown	50125
GeekBench 4 Single Core *	Unknown	782
GeekBench 4 Multi-Core *	Unknown	2457
GeekBench 4 RenderScript *	Unknown	1804

General specs

General specs — specifications for Smart A12 Star, Galaxy Alpha.
Specification	Smart A12 Star	Galaxy Alpha
Release date	2014 July	2014 August
Colors	Black	Charcoal Black Sleek Silver Dazzling White Frosted Gold Scuba Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	50 EUR	390 EUR
Battery life	Stand by time- Up to 300 h	Stand by time- Up to 350 h (3G) Talking time- Up to 11 h (3G) Music play - Up to 37 h
Body build	Unknown	aluminum frame plastic back

Communication and Connectivity

Communication and Connectivity — specifications for Smart A12 Star, Galaxy Alpha.
Specification	Smart A12 Star	Galaxy Alpha
SIM card	Dual SIM (Micro-SIM dual stand-by)	Nano-SIM
Network	Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100) 2(1900) 3(1800) 5(850) 7(2600) 8(900) 20(800) - G850F LTE band 1(2100) 4(1700/2100) 17(700) - SM-G850M
Speed	HSPA	HSPA 42.2/5.76 Mbps LTE-A Cat6 300/50 Mbps
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 b/g/n hotspot	Wi-Fi 802.11 a/b/g/n/ac dual-band Wi-Fi Direct hotspot
GPS	Yes with A-GPS	Yes with A-GPS GLONASS
USB	microUSB 2.0	microUSB 2.0
Bluetooth	2.0	4.0 A2DP EDR LE
Harmful irradiation	SAR EU - 0.79 W/kg (head)	SAR - 1.18 W/kg (head) 0.75 W/kg (body) SAR EU - 0.37 W/kg (head) 0.51 W/kg (body)

Music and Audio

Music and Audio — specifications for Smart A12 Star, Galaxy Alpha.
Specification	Smart A12 Star	Galaxy Alpha
Radio	FM radio	No
Others	Unknown	Active noise cancellation with dedicated mic

Other features

Other features — specifications for Smart A12 Star, Galaxy Alpha.
Specification	Smart A12 Star	Galaxy Alpha
Dop	Sensors Accelerometer proximity	Sensors Fingerprint (front-mounted) accelerometer gyro proximity compass heart rate - ANT+ - Versions: G850F (Europe); G850T (T-Mobile) G850M (Vodafone); G850FQ; G850Y Also known as Samsung Galaxy Alfa

Karbonn Smart A12 Star vs Samsung Galaxy Alpha