Samsung Galaxy M31 vs Xiaomi Mi 4: 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 M31:

OLED

Mi 4:

LCD
Weight

Mi 4: 42 g lighter

Galaxy M31:

191 g

Mi 4:

149 g
Width

Mi 4: 6.6 mm narrower

Galaxy M31:

75.1 mm

Mi 4:

68.5 mm
Screen diagonal

Mi 4: 1.4 in smaller diagonal

Galaxy M31:

6.4 in

Mi 4:

5 in
Chipset

Galaxy M31:

Exynos 9611 (10nm)

Mi 4:

Qualcomm MSM8974AC Snapdragon 801 (28 nm)
Rear camera layout

Galaxy M31:

Triple

Mi 4:

Single

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 M31

Height:

159.2 mm +20 mm versus Mi 4
Width:

75.1 mm +6.6 mm versus Mi 4
Depth:

8.9 mm
2. Mi 4

Height:

139.2 mm
Width:

68.5 mm
Depth:

8.9 mm

Weight

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

1. Galaxy M31

191 g

+42 g versus Mi 4
2. Mi 4

149 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. Galaxy M31

Screen diagonal:

6.4 in

Aspect ratio (height:width):

19.5:9

Approximate rectangular screen area:

100.5 cm²
2. Mi 4

Screen diagonal:

5 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

68.9 cm²

Galaxy M31 has approximately 45.9% more rectangular screen area than Mi 4.

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 M31, Mi 4, compared at the same storage capacity.
Storage	Galaxy M31	Mi 4
64 GB	6 GB RAM	Unknown
128 GB	6 GB RAM	Unknown

Mi 4: Original memory entry

16/64 GB · 2/3 GB 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. Galaxy M31

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

2. Mi 4

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 M31

6000 mAh

+2920 mAh versus Mi 4
2. Mi 4

3080 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 M312. Mi 4

Everyday essentials

Everyday essentials — specifications for Galaxy M31, Mi 4.
Specification	Galaxy M31	Mi 4
Dimensions (HxWxD)	159.2 Х 75.1 Х 8.9 mm	139.2 Х 68.5 Х 8.9 mm
Weight	191 g	149 g
Technology	Super AMOLED	IPS LCD
Screen size	6.4" inch	5" inch
Screen resolution	1080 x 2340 px	1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	64GB 6GB RAM 128GB 6GB RAM	16/64 GB 2/3 GB RAM
Memory card support	microSDXC (dedicated slot)	No
Battery Capacity is not battery life. No endurance test is implied.	6000 mAh Non-removable Li-Po	3080 mAh Non-removable Li-Ion
Operating system OS	Android 10.0; One UI 2.0	Android 4.4.3 (KitKat) upgradable to 6.0.1 (Marshmallow); MIUI 10
Chipset	Exynos 9611 (10nm)	Qualcomm MSM8974AC Snapdragon 801 (28 nm)
NFC	Yes (market/region dependent)	Unknown
Headphone jack	Yes	Yes

Display

Display — specifications for Galaxy M31, Mi 4.
Specification	Galaxy M31	Mi 4
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	100.5 cm2	68.9 cm2
Screen format	19.5:9 (height:width)	16:9 (height:width)
Screen to body ratio	84.1%	72.3%
PPI /points per inch/	403 PPI	441 PPI
Screen protection	Corning Gorilla Glass 3	Unknown

Camera and Video

Camera and Video — specifications for Galaxy M31, Mi 4.
Specification	Galaxy M31	Mi 4
Rear camera, main	64 MP Triple	13 MP Single
Camera specs	64 MP f/1.8 26mm (wide) 1/1.72" 0.8µm PDAF -8 MP f/2.2 12mm (ultrawide) 1/4.0" 1.12µm -5 MP f/2.4 25mm (macro) 1/5.0" (depth)	13 MP f/1.8 1/3'' 1.12µm AF
Functions	HDR	LED flash panorama HDR
Video	2160p@30fps 1080p@30fps	1080p@30fps
Front camera, selfie	32 MP Single	8 MP Single
Specifications	32 MP f/2.0 26mm (wide) 1/2.8'' 0.8µm	8 MP f/1.8

Performance

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

Performance — specifications for Galaxy M31, Mi 4.
Specification	Galaxy M31	Mi 4
Processor CPU	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)	Quad-core 2.5 GHz Krait 400
Graphics processor GPU	Mali-G72 MP3	Adreno 330
Antutu 7 score *	Unknown	61632
GeekBench 4 Single Core *	Unknown	891
GeekBench 4 Multi-Core *	Unknown	1967
GeekBench 4 RenderScript *	Unknown	1997
Antutu 8 score *	194554	Unknown

General specs

General specs — specifications for Galaxy M31, Mi 4.
Specification	Galaxy M31	Mi 4
Release date	2020 February 25	2014 July
Colors	Ocean Blue Space Black Red	Black White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	200 EUR	230 EUR
Battery life	Unknown	Stand by time- Up to 280 h (3G)
Body build	Glass front (Gorilla Glass 3) plastic back plastic frame	aluminum frame plastic back

Communication and Connectivity

Communication and Connectivity — specifications for Galaxy M31, Mi 4.
Specification	Galaxy M31	Mi 4
SIM card	Dual SIM (Nano-SIM dual stand-by)	Micro-SIM
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE (unspecified)	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - all versions CDMA 800 / 1900 - Telecom 3G model -3G - TD-SCDMA - 4G model HSDPA 850 / 900 / 1900 / 2100 - Unicom 3G model Telecom 3G model CDMA2000 1xEV-DO - Telecom 3G model -4G - LTE band 38(2600) 39(1900) 40(2300) - 4G model
Speed	HSPA LTE-A	HSPA 42.2/5.76 Mbps LTE EV-DO Rev.A 3.1 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 DLNA hotspot
GPS	Yes with A-GPS GLONASS GALILEO BDS	Yes with A-GPS GLONASS BDS
USB	2.0 Type-C 1.0 reversible connector	microUSB 2.0 USB Host
Bluetooth	5.0 A2DP LE	4.0 A2DP
Harmful irradiation	SAR - 0.52 W/kg (head) 0.69 W/kg (body) SAR EU - 0.52 W/kg (head) 0.69 W/kg (body)	SAR - 1.36 W/kg (head)

Music and Audio

Music and Audio — specifications for Galaxy M31, Mi 4.
Specification	Galaxy M31	Mi 4
Radio	FM radio RDS recording	FM radio
Others	Unknown	Active noise cancellation with dedicated mic

Other features

Other features — specifications for Galaxy M31, Mi 4.
Specification	Galaxy M31	Mi 4
Dop	Sensors Fingerprint (rear-mounted) accelerometer gyro proximity compass - Fast battery charging 15W - Versions: SM-M315F/DS	Sensors Accelerometer gyro proximity compass barometer Infrared port - Fast battery charging (Quick Charge 2.0)

Samsung Galaxy M31 vs Xiaomi Mi 4