Samsung Galaxy A31 vs vivo NEX 3: 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.

Weight

Galaxy A31: 32.3 g lighter

Galaxy A31:

185 g

NEX 3:

217.3 g
Width

Galaxy A31: 3 mm narrower

Galaxy A31:

73.1 mm

NEX 3:

76.1 mm
Screen diagonal

Galaxy A31: 0.49 in smaller diagonal

Galaxy A31:

6.4 in

NEX 3:

6.89 in
Rear camera layout

Galaxy A31:

Quad

NEX 3:

Triple
Depth

Galaxy A31: 0.8 mm thinner

Galaxy A31:

8.6 mm

NEX 3:

9.4 mm
Height

Galaxy A31: 8.1 mm shorter

Galaxy A31:

159.3 mm

NEX 3:

167.4 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. Galaxy A31

Height:

159.3 mm
Width:

73.1 mm
Depth:

8.6 mm
2. NEX 3

Height:

167.4 mm +8.1 mm versus Galaxy A31
Width:

76.1 mm +3 mm versus Galaxy A31
Depth:

9.4 mm +0.8 mm versus Galaxy A31

Weight

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

1. Galaxy A31

185 g
2. NEX 3

217.3 g

+32.3 g versus Galaxy A31

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. Galaxy A31

Screen diagonal:

6.4 in

Aspect ratio (height:width):

20:9

Approximate rectangular screen area:

98.9 cm²
2. NEX 3

NEX 3: 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 Galaxy A31, NEX 3, compared at the same storage capacity.
Storage	Galaxy A31	NEX 3
64 GB	4 GB RAM	Unknown
128 GB	4 / 6 GB RAM Alternative RAM configurations	Unknown

NEX 3: Original memory entry

128GB 8GB RAM · UFS3.0

Practical features

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

1. Galaxy A31

NFC:: See details Yes (market/region dependent)
Headphone jack:: Yes
Memory card support:: See details microSDXC (dedicated slot)

2. NEX 3

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. Galaxy A31

5000 mAh

+500 mAh versus NEX 3
2. NEX 3

4500 mAh

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. Galaxy A312. NEX 3

Everyday essentials

Everyday essentials — specifications for Galaxy A31, NEX 3.
Specification	Galaxy A31	NEX 3
Dimensions (HxWxD)	159.3 Х 73.1 Х 8.6 mm	167.4 Х 76.1 Х 9.4 mm
Weight	185 g	217.3 g
Technology	Super AMOLED	Super AMOLED
Screen size	6.4" inch	6.89" inch
Screen resolution	1080 x 2400 px	1080 x 2256 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	64GB 4GB RAM 128GB 4GB RAM 128GB 6GB RAM	128GB 8GB RAM UFS3.0
Memory card support	microSDXC (dedicated slot)	No
Battery Capacity is not battery life. No endurance test is implied.	5000 mAh Non-removable Li-Po	4500 mAh Non-removable Li-Po
Operating system OS	Android 10.0; One UI 2.0	Android 9.0 (Pie); Funtouch 9.1
Chipset	Unknown	Qualcomm SDM855 Snapdragon 855+ (7 nm)
NFC	Yes (market/region dependent)	Unknown
Headphone jack	Yes	Yes

Display

Display — specifications for Galaxy A31, NEX 3.
Specification	Galaxy A31	NEX 3
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	98.9 cm2	119.3 cm2
Screen format	20:9 (height:width)	Unknown
Screen to body ratio	84.9%	93.6%
PPI /points per inch/	411 PPI	0 PPI

Camera and Video

Camera and Video — specifications for Galaxy A31, NEX 3.
Specification	Galaxy A31	NEX 3
Rear camera, main	48 MP Quad	64 MP Triple
Camera specs	48 MP f/2.0 26mm (wide) 1/2.0" 0.8µm PDAF -8 MP f/2.2 13mm (ultrawide) 1/4.0" 1.12µm -5 MP f/2.4 (macro) -5 MP (depth)	64 MP f/1.8 (wide) 1/1.7'' 0.8µm PDAF -13 MP f/2.5 (telephoto) f/2.2 (ultrawide) PDAF
Functions	LED flash panorama HDR	LED flash HDR
Video	1080p@30fps	1080p@30fps
Front camera, selfie	20 MP Single	16 MP Single
Specifications	20 MP f/2.2 (wide)	Motorized pop-up 16 MP f/2.1

Performance

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

Performance — specifications for Galaxy A31, NEX 3.
Specification	Galaxy A31	NEX 3
Processor CPU	Octa-core (2x2.0 GHz & 6x1.7 GHz)	Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485)
Graphics processor GPU	Unknown	Adreno 640 (700 MHz)
Antutu 8 score *	Unknown	483427

General specs

General specs — specifications for Galaxy A31, NEX 3.
Specification	Galaxy A31	NEX 3
Release date	2020 March 24	2019 September
Colors	Prism Crush Black Prism Crush Blue Prism Crush Red Prism Crush White	Liquid Tianhe Deep air streamer
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	Unknown	640 EUR
Body build	Unknown	Front/back glass aluminum frame

Communication and Connectivity

Communication and Connectivity — specifications for Galaxy A31, NEX 3.
Specification	Galaxy A31	NEX 3
SIM card	Single SIM (Nano-SIM)Dual SIM (Nano-SIM dual stand-by)	Dual SIM (Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE (unspecified)	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO -4G - LTE band 1(2100) 2(1900) 3(1800) 4(1700/2100) 5(850) 7(2600) 8(900) 12(700) 17(700) 18(800) 19(800) 20(800) 26(850) 28(700) 34(2000) 38(2600) 39(1900) 40(2300) 41(2500)
Speed	HSPA LTE-A	HSPA 42.2/5.76 Mbps LTE-A (5CA) Cat18 1200/150 Mbps
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 a/b/g/n/ac dual-band Wi-Fi Direct hotspot	Wi-Fi 802.11 a/b/g/n/ac dual-band Wi-Fi Direct hotspot
GPS	Yes with A-GPS GLONASS GALILEO BDS	Yes with A-GPS GLONASS GALILEO BDS
USB	2.0 Type-C 1.0 reversible connector USB On-The-Go	2.0 Type-C 1.0 reversible connector USB On-The-Go
Bluetooth	5.0 A2DP LE	5.0 A2DP LE
Harmful irradiation	SAR EU - 0.49 W/kg (head) 1.68 W/kg (body)	Unknown

Music and Audio

Music and Audio — specifications for Galaxy A31, NEX 3.
Specification	Galaxy A31	NEX 3
Radio	Unknown	No
Others	Unknown	HDR10 32-bit/192kHz audio -Active noise cancellation with dedicated mic

Other features

Other features — specifications for Galaxy A31, NEX 3.
Specification	Galaxy A31	NEX 3
Dop	Sensors Fingerprint (under display optical) accelerometer gyro proximity compass - Fast charging 15W	Sensors Fingerprint (under display optical) accelerometer gyro proximity compass - Fast battery charging 44W

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Samsung Galaxy A31 vs vivo NEX 3