Samsung Galaxy S21 vs Xiaomi Mi Mix 4 Specs Comparison

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

Display

Size:

6.2 inches

6.7 inches

Resolution:

2400 x 1080 pixels, 20:9 ratio, 424 PPI

2400 x 1080 pixels, 20:9 ratio, 395 PPI

Technology:

Dynamic AMOLED

AMOLED

Refresh rate:

120Hz (adaptive)

120Hz

Screen-to-body:

86.06 %

87.59 %

Peak brightness:

1300 cd/m2 (nit)

Features:

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

Hardware

System chip:

Qualcomm Snapdragon 888 (5 nm)

Qualcomm Snapdragon 888+ SM8350-AC (5 nm)

Processor:

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

Octa-core, 3000 MHz, Kryo 680 Prime, 64-bit

GPU:

Adreno 660

RAM:

8GB LPDDR5

Internal storage:

128GB (UFS 3.0), not expandable

128GB (UFS 3.1), not expandable

Device type:

Smartphone

OS:

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

Android (11), MIUI 12.5 UI

Battery

Capacity:

4000 mAh

4500 mAh

Type:

Li - Polymer, Not user replaceable

Li - Ion, Not user replaceable

Charging:

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

Fast charging, Qi wireless charging, Reverse wireless charging

Max charge speed:

Wired: 25.0W; Wireless: 15.0W

Wired: 120.0W; Wireless: 50.0W

Camera

Rear:

Triple camera

Main camera:

12 MP (OIS, PDAF)

108 MP (OIS, Laser and PDAF)

Specifications:

F1.8; 26 mm; 1/1.76"; 1.8 μm

F1.9; 24 mm; 1/1.33"; 0.8 μm

Second camera:

64 MP (Telephoto, OIS, PDAF)

8 MP (Periscope, OIS, PDAF)

Specifications:

Aperture size: F2.0; Focal Length: 29 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm

Optical zoom: 5.0x

Third camera:

12 MP (Ultra-wide, Autofocus)

13 MP (Ultra-wide)

Specifications:

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

Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/3.06"; Pixel size: 1.12 μm

Flash:

LED

Dual LED

Video recording:

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

7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (480 fps), 1280x720 (HD) (480 fps)

Features:

OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS

HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking

Front:

10 MP (PDAF, HDR)

20 MP (Under-screen)

Video capture:

3840x2160 (4K UHD) (60 fps)

1920x1080 (Full HD)

Design

Dimensions:

5.97 x 2.80 x 0.31 inches (151.7 x 71.2 x 7.9 mm)

6.40 x 2.97 x 0.31 inches (162.6 x 75.4 x 8 mm)

Weight:

6.03 oz (171.0 g)

7.94 oz (225.0 g)

Materials:

Back: Plastic; Frame: Aluminum

Back: Ceramic; Frame: Aluminum

Resistance:

Water, Dust; IP68

Splash, Dust; IP53

Biometrics:

2D Face unlock, Ultrasonic in-screen fingerprint

In-screen fingerprint

Keys:

Right: Volume control, Lock/Unlock key

Colors:

Phantom pink, Violet, Gray, White

Ceramic Black, Ceramic White, Shadow Gray

Cellular

5G:

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

n1, n3, n5, n8, n28, n41, n77, n78, n79, SA, NSA, Sub-6

4G (FDD):

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)

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 8(900), 12(700 a), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT)

4G (TDD):

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

Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+), 42(3500)

3G:

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

Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 6(800), 8(900), 19(800)

Data Speed:

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

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

Dual SIM:

Yes

SIM type:

Nano SIM

HD Voice:

Yes

VoLTE:

Yes

Multimedia

Headphones:

No 3.5mm jack

Speakers:

Earpiece, Multiple speakers

Features:

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, Video recording

for Noise cancellation

Connectivity & Features

Bluetooth:

5.0

5.2

Wi-Fi:

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

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

USB:

Type-C (reversible), USB 3.2

Type-C (reversible), USB 2.0

Features:

Charging, Headphones port, OTG, Video out

Charging

Location:

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

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

Sensors:

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

Other:

NFC, ANT+

NFC

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Dec 08, 2020

FCC ID value:

A3LSMG991U

Measured SAR:

Head:

0.36 W/kg

Body:

1.08 W/kg

Simultaneous Transmission:

3.96 W/kg

Wireless Router:

1.09 W/kg

Phablet:

2.49 W/kg

Buyers information

Price:

$ 800

In The Box:

C to C Data Cable, Ejection Pin

Power adapter, USB Type-C data cable, Type-C to 3.5mm headphone cable, Mobile phone protective shell, Film (covered on the screen), Pins, Instructions (including three packs of certificates)