Samsung Galaxy A31 vs TECNO Spark 3 Pro: 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

Galaxy A31:

OLED

Spark 3 Pro:

LCD
Width

Galaxy A31: 2.4 mm narrower

Galaxy A31:

73.1 mm

Spark 3 Pro:

75.5 mm
Screen diagonal

Spark 3 Pro: 0.2 in smaller diagonal

Galaxy A31:

6.4 in

Spark 3 Pro:

6.2 in
Rear camera layout

Galaxy A31:

Quad

Spark 3 Pro:

Dual
Depth

Spark 3 Pro: 0.7 mm thinner

Galaxy A31:

8.6 mm

Spark 3 Pro:

7.9 mm
Height

Spark 3 Pro: 5 mm shorter

Galaxy A31:

159.3 mm

Spark 3 Pro:

154.3 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 +5 mm versus Spark 3 Pro
Width:

73.1 mm
Depth:

8.6 mm +0.7 mm versus Spark 3 Pro

Weight:

185 g
2. Spark 3 Pro

Height:

154.3 mm
Width:

75.5 mm +2.4 mm versus Galaxy A31
Depth:

7.9 mm

Weight:

Unknown

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. Spark 3 Pro

Spark 3 Pro: 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, Spark 3 Pro, compared at the same storage capacity.
Storage	Galaxy A31	Spark 3 Pro
32 GB	Not recorded	2 GB RAM
64 GB	4 GB RAM	Not recorded
128 GB	4 / 6 GB RAM Alternative RAM configurations	Not recorded

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. Spark 3 Pro

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD

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

+1500 mAh versus Spark 3 Pro
2. Spark 3 Pro

3500 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. Spark 3 Pro

Everyday essentials

Everyday essentials — specifications for Galaxy A31, Spark 3 Pro.
Specification	Galaxy A31	Spark 3 Pro
Dimensions (HxWxD)	159.3 Х 73.1 Х 8.6 mm	154.3 Х 75.5 Х 7.9 mm
Weight	185 g	0 g
Technology	Super AMOLED	IPS LCD
Screen size	6.4" inch	6.2" inch
Screen resolution	1080 x 2400 px	720 x 1500 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	32GB 2GB RAM
Memory card support	microSDXC (dedicated slot)	microSD
Battery Capacity is not battery life. No endurance test is implied.	5000 mAh Non-removable Li-Po	3500 mAh Non-removable Li-Ion
Operating system OS	Android 10.0; One UI 2.0	Android 9.0 (Pie) HIOS 5.0
Chipset	Unknown	Mediatek MT6761 Helio A22 (12 nm)
NFC	Yes (market/region dependent)	Unknown
Headphone jack	Yes	Yes

Display

Display — specifications for Galaxy A31, Spark 3 Pro.
Specification	Galaxy A31	Spark 3 Pro
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	98.9 cm2	96.7 cm2
Screen format	20:9 (height:width)	Unknown
Screen to body ratio	84.9%	83.0%
PPI /points per inch/	411 PPI	0 PPI

Camera and Video

Camera and Video — specifications for Galaxy A31, Spark 3 Pro.
Specification	Galaxy A31	Spark 3 Pro
Rear camera, main	48 MP Quad	13 MP Dual
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)	13 MP AF -2 MP
Functions	LED flash panorama HDR	LED flash
Video	1080p@30fps	1080p@30fps
Front camera, selfie	20 MP Single	8 MP Single
Specifications	20 MP f/2.2 (wide)	8 MP

Performance

Performance — specifications for Galaxy A31, Spark 3 Pro.
Specification	Galaxy A31	Spark 3 Pro
Processor CPU	Octa-core (2x2.0 GHz & 6x1.7 GHz)	Quad-core 2.0 GHz Cortex-A53
Graphics processor GPU	Unknown	PowerVR GE8320

General specs

General specs — specifications for Galaxy A31, Spark 3 Pro.
Specification	Galaxy A31	Spark 3 Pro
Release date	2020 March 24	2019 April
Colors	Prism Crush Black Prism Crush Blue Prism Crush Red Prism Crush White	Midnight Black Champagne Gold Nebula Black

Communication and Connectivity

Communication and Connectivity — specifications for Galaxy A31, Spark 3 Pro.
Specification	Galaxy A31	Spark 3 Pro
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 -3G - HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100) 3(1800) 5(850) 8(900) 38(2600) 40(2300) 41(2500) LTE band 1(2100) 2(1900) 4(1700/2100) 7(2600) 20(800) 28(700) LTE band 3(1800)
Speed	HSPA LTE-A	HSPA 42.2/5.76 Mbps LTE Cat4 150/50 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 b/g/n hotspot
GPS	Yes with A-GPS GLONASS GALILEO BDS	Yes with A-GPS
USB	2.0 Type-C 1.0 reversible connector USB On-The-Go	microUSB 2.0 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, Spark 3 Pro.
Specification	Galaxy A31	Spark 3 Pro
Radio	Unknown	FM radio

Other features

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

Samsung Galaxy A31 vs TECNO Spark 3 Pro