Karbonn Smart A12 Star vs vivo NEX A: 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

NEX A:

OLED
Weight

Smart A12 Star: 69 g lighter

Smart A12 Star:

130 g

NEX A:

199 g
Width

Smart A12 Star: 12.8 mm narrower

Smart A12 Star:

64.2 mm

NEX A:

77 mm
Screen diagonal

Smart A12 Star: 2.59 in smaller diagonal

Smart A12 Star:

4 in

NEX A:

6.59 in
Rear camera layout

Smart A12 Star:

Single

NEX A:

Dual
Depth

NEX A: 2.1 mm thinner

Smart A12 Star:

10.1 mm

NEX A:

8 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 +2.1 mm versus NEX A
2. NEX A

Height:

162 mm +37.8 mm versus Smart A12 Star
Width:

77 mm +12.8 mm versus Smart A12 Star
Depth:

8 mm

Weight

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

1. Smart A12 Star

130 g
2. NEX A

199 g

+69 g versus Smart A12 Star

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.

At least two phones need compatible screen dimensions for a drawing.

1. Smart A12 Star

Screen diagonal:

4 in

Aspect ratio (height:width):

5:3

Approximate rectangular screen area:

45.5 cm²
2. NEX A

NEX A: Screen geometry unavailable or conflicting.

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, NEX A, compared at the same storage capacity.
Storage	Smart A12 Star	NEX A
128 GB	Unknown	6 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. NEX A

NFC:: Unknown
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. NEX A

4000 mAh

+2600 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. NEX A

Everyday essentials

Everyday essentials — specifications for Smart A12 Star, NEX A.
Specification	Smart A12 Star	NEX A
Dimensions (HxWxD)	124.2 Х 64.2 Х 10.1 mm	162 Х 77 Х 8 mm
Weight	130 g	199 g
Technology	IPS LCD	Super AMOLED
Screen size	4" inch	6.59" inch
Screen resolution	480 x 800 px	1080 x 2316 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	4 GB 512 MB RAM	128 GB 6 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	4000 mAh Non-removable Li-Ion
Operating system OS	Android 4.4.2 (KitKat)	Android 8.1 (Oreo); Funtouch 4
Chipset	Unknown	Qualcomm SDM710 Snapdragon 710 (10 nm)
Headphone jack	Yes	Yes

Display

Display — specifications for Smart A12 Star, NEX A.
Specification	Smart A12 Star	NEX A
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	45.5 cm2	107.3 cm2
Screen format	5:3 (height:width)	Unknown
Screen to body ratio	57.1%	86.0%
PPI /points per inch/	233 PPI	0 PPI

Camera and Video

Camera and Video — specifications for Smart A12 Star, NEX A.
Specification	Smart A12 Star	NEX A
Rear camera, main	5 MP Single	12 MP Dual
Camera specs	5 MP	12 MP f/1.8 1/2.55'' 1.4µm 4-axis OIS dual pixel PDAF -5 MP f/2.4 depth sensor
Functions	LED flash	Dual-LED dual-tone flash HDR panorama
Video	Yes	1080p@30fps
Front camera, selfie	0.3 MP Single	8 MP Single
Specifications	VGA	Motorized pop-up 8 MP f/2.0

Performance

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

Performance — specifications for Smart A12 Star, NEX A.
Specification	Smart A12 Star	NEX A
Processor CPU	Dual-core 1.2 GHz	Octa-core (2x2.2 GHz 360 Gold & 6x1.7 GHz Kryo 360 Silver)
Graphics processor GPU	Unknown	Adreno 616
GeekBench 4 Single Core *	Unknown	1855
GeekBench 4 Multi-Core *	Unknown	5940

General specs

General specs — specifications for Smart A12 Star, NEX A.
Specification	Smart A12 Star	NEX A
Release date	2014 July	2018 June
Colors	Black	Black Red
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	50 EUR	600 EUR
Battery life	Stand by time- Up to 300 h	Unknown

Communication and Connectivity

Communication and Connectivity — specifications for Smart A12 Star, NEX A.
Specification	Smart A12 Star	NEX A
SIM card	Dual SIM (Micro-SIM dual stand-by)	Dual SIM (Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100) 2(1900) 3(1800) 4(1700/2100) 5(850) 8(900) 34(2000) 38(2600) 39(1900) 40(2300) 41(2500)
Speed	HSPA	HSPA 42.2/5.76 Mbps LTE-A Cat15 800/150 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 BDS GNSS
USB	microUSB 2.0	2.0 Type-C 1.0 reversible connector USB On-The-Go
Bluetooth	2.0	5.0 A2DP LE
Harmful irradiation	SAR EU - 0.79 W/kg (head)	Unknown

Music and Audio

Music and Audio — specifications for Smart A12 Star, NEX A.
Specification	Smart A12 Star	NEX A
Radio	FM radio	To be confirmed
Others	Unknown	32-bit/192kHz audio -Active noise cancellation with dedicated mic

Other features

Other features — specifications for Smart A12 Star, NEX A.
Specification	Smart A12 Star	NEX A
Dop	Sensors Accelerometer proximity	Sensors Fingerprint (rear-mounted) accelerometer gyro proximity compass - Fast battery charging 22W

Karbonn Smart A12 Star vs vivo NEX A