Samsung Galaxy M31 vs Samsung Galaxy S21 Ultra Specs Comparison

Compare phone and tablet specifications of up to three devices at once.

Display

Size:

6.4 inches

6.8 inches

Resolution:

2340 x 1080 pixels, 19.5:9 ratio, 403 PPI

3200 x 1440 pixels, 20:9 ratio, 516 PPI

Technology:

Super AMOLED

Dynamic AMOLED

Refresh rate:

120Hz (adaptable)

Screen-to-body:

83.97 %

89.33 %

Peak brightness:

420 cd/m2 (nit)

1500 cd/m2 (nit)

Features:

Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor

Hardware

System chip:

Exynos 9611 (10 nm)

Qualcomm Snapdragon 888 SM8350 (5 nm)

Processor:

Octa-core, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit

Octa-core, 1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680, 64-bit

GPU:

Mali-G72 MP3

Adreno 660

RAM:

6GB LPDDR4

12GB LPDDR5

Internal storage:

64GB (UFS 2.1), available to use: 49 GB

128GB (UFS 3.1), not expandable

Storage expansion:

microSDXC up to 512 GB

Device type:

Smartphone

OS:

Android (11, 10), Samsung One UI

Android (13, 12, 11), Samsung One UI

Battery

Capacity:

6000 mAh

5000 mAh

Type:

Li - Polymer, Not user replaceable

Charging:

Fast charging

Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging

Max charge speed:

Wired: 15.0W

Wired: 25.0W; Wireless: 15.0W

Camera

Rear:

Quad camera

Main camera:

64 MP (PDAF)

108 MP (OIS, Laser and PDAF)

Specifications:

F1.8; 26 mm; 1/1.7"; 0.8 μm

F1.8; 24 mm; 1/1.33"; 0.8 μm

Second camera:

8 MP (Ultra-wide)

10 MP (Telephoto, OIS, PDAF)

Specifications:

Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm

Optical zoom: 3.0x; Aperture size: F2.4; Focal Length: 70 mm; Sensor size: 1/3.2"; Pixel size: 1.22 μm

Third camera:

5 MP (Macro)

12 MP (Ultra-wide, PDAF)

Specifications:

Aperture size: F2.2; Focal Length: 25 mm; Sensor size: 1/5"; Pixel size: 1.12 μm

Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Fourth camera:

5 MP (Depth information)

10 MP (Periscope, OIS, PDAF)

Specifications:

Aperture size: F2.2

Optical zoom: 10.0x; Aperture size: F4.9; Focal Length: 240 mm; Sensor size: 1/3.2"; Pixel size: 1.22 μm

Flash:

LED

Video recording:

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)

7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)

Features:

Hyperlapse, EIS

OIS, HDR, Hyperlapse, Video light, EIS

Front:

32 MP (HDR, Slow-motion videos)

40 MP (PDAF, HDR)

Video capture:

1920x1080 (Full HD)

3840x2160 (4K UHD) (60 fps)

Design

Dimensions:

6.27 x 2.96 x 0.35 inches (159.2 x 75.1 x 8.9 mm)

6.50 x 2.98 x 0.35 inches (165.1 x 75.6 x 8.9 mm)

Weight:

6.74 oz (191.0 g)

8.04 oz (229.0 g)

Materials:

Back: Plastic; Frame: Plastic

Back: Glass (Corning Gorilla Glass Victus); Frame: Aluminum

Resistance:

Water, Dust; IP68

Biometrics:

2D Face unlock, Fingerprint (touch)

2D Face unlock, Ultrasonic in-screen fingerprint

Keys:

Right: Volume control, Lock/Unlock key

Colors:

Blue, Black, Red

Phantom black, Silver

Cellular

5G:

n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave

4G (FDD):

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 66(AWS-3), 71(600)

4G (TDD):

Bands 38(2600), 40(2300), 41(2600+)

Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)

3G:

Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)

Data Speed:

LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS

Dual SIM:

Yes

SIM type:

Nano SIM

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack

No 3.5mm jack

Speakers:

Earpiece, Loudspeaker

Earpiece, Multiple speakers

Features:

Dolby Atmos

32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus

Screen mirroring:

Wireless screen share

Radio:

FM, Stereo, RDS

Additional microphone(s):

for Noise cancellation

for Noise cancellation, Video recording

Connectivity & Features

Bluetooth:

5.0

5.1

Wi-Fi:

802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

802.11 a, b, g, n, ac, ax (Wi-Fi 6), dual-band; MIMO, Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 2.0

Type-C (reversible), USB 3.2

Features:

Charging

Charging, Headphones port, OTG, Video out

Location:

GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning

Sensors:

Accelerometer, Gyroscope, Compass

Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer

Other:

NFC

NFC, ANT+

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Feb 07, 2020

Dec 22, 2020

FCC ID value:

A3LSMM315F

A3LSMG998U

Measured SAR:

Head:

0.42 W/kg

0.77 W/kg

Body:

0.41 W/kg

1.02 W/kg

Simultaneous Transmission:

1.54 W/kg

1.59 W/kg

Wireless Router:

0.74 W/kg

1.16 W/kg

Phablet:

3.15 W/kg

Buyers information

Price:

€ 240

$ 1200

User Manual:

This is the official Samsung Galaxy M31 User Guide in English provided from the manufacturer.

In The Box:

15W fast charger, Data cable, Ejection pin, User Manual

C to C Data Cable, Ejection Pin

Availability

Officially announced:

Feb 25, 2020

Jan 14, 2021

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