Xiaomi Mi Mix 3 vs Samsung Galaxy S21 Specs Comparison

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

Display

Size:

6.4 inches

6.2 inches

Resolution:

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

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

Technology:

Super AMOLED

Dynamic AMOLED

Refresh rate:

120Hz (adaptive)

Screen-to-body:

84.96 %

86.06 %

Peak brightness:

600 cd/m2 (nit)

1300 cd/m2 (nit)

Features:

HDR support, Ambient light sensor, Proximity sensor

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

Hardware

System chip:

Qualcomm Snapdragon 845 SDM845 (10 nm)

Qualcomm Snapdragon 888 (5 nm)

Processor:

Octa-core, 2800 MHz, Kryo 385, 64-bit

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

GPU:

Adreno 630

Adreno 660

RAM:

8GB LPDDR4

8GB LPDDR5

Internal storage:

256GB, not expandable

128GB (UFS 3.0), not expandable

Device type:

Smartphone

OS:

Android (9.0 Pie)

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

Battery

Capacity:

3200 mAh

4000 mAh

Type:

Li - Polymer, Not user replaceable

Charging:

Qualcomm Quick Charge 4+, Qi wireless 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: 25.0W; Wireless: 15.0W

Camera

Rear:

Dual camera

Triple camera

Main camera:

12.2 MP (OIS, PDAF)

12 MP (OIS, PDAF)

Specifications:

F1.8; 1/2.55"; 1.4 μm

F1.8; 26 mm; 1/1.76"; 1.8 μm

Second camera:

12 MP (Telephoto)

64 MP (Telephoto, OIS, PDAF)

Specifications:

Optical zoom: 2.0x; Sensor size: 1/3.4"; Pixel size: 1 μm

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

Third camera:

12 MP (Ultra-wide, Autofocus)

Specifications:

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

Flash:

Dual LED

LED

Video recording:

3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (960 fps), 1280x720 (HD) (960 fps)

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

Features:

Time-lapse video, EIS, Video calling, Video sharing

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

Front:

24 MP (Dual-Camera, Flash, HDR)

10 MP (PDAF, HDR)

Video capture:

3840x2160 (4K UHD) (60 fps)

Design

Dimensions:

6.22 x 2.94 x 0.33 inches (157.89 x 74.69 x 8.46 mm)

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

Weight:

7.69 oz (218.0 g)

6.03 oz (171.0 g)

Materials:

Back: Ceramic; Frame: Aluminum

Back: Plastic; Frame: Aluminum

Resistance:

Water, Dust; IP68

Biometrics:

2D Face unlock, Fingerprint (touch)

2D Face unlock, Ultrasonic in-screen fingerprint

Features:

Notification light

Keys:

Right: Volume control, Lock/Unlock key

Colors:

Black, Green, Blue

Phantom pink, Violet, Gray, White

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), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 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)