Samsung Galaxy S21 Ultra 5G vs Xiaomi Mix Fold 3

Samsung Galaxy S21 Ultra 5G

Xiaomi Mix Fold 3

Samsung Galaxy S21 Ultra 5G

Xiaomi Mix Fold 3

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800, 1900 & TD-SCDMA

GSM 850, 900, 1800, 1900; CDMA 800, 1900
3G network

HSDPA 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DO

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100; CDMA2000 1xEV-DO
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 26, 34, 38, 39, 40, 41, 42
5G network

5G band SA/NSA/Sub6/mmWave

5G band 1, 3, 5, 8, 28, 38, 40, 41, 77, 78, 79 SA/NSA
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A (CA), 2000 Mbps download, 200 Mbps upload

LTE-A (CA)
GPRS

Yes

Yes
EDGE

Yes

Yes

Availability
Oficially announced

2021-01

2023-08
Status

2021-01

2023-08

Design
Build

Glass front (Gorilla Glass Victus), glass back (Gorilla Glass), aluminum frame

Glass front (folded), plastic front (unfolded), glass back or aramid fiber back, aluminum frame
SIM

Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)

Dual SIM (Nano-SIM, dual stand-by)
Height

165.1 mm

161.2 mm
Width

75.6 mm

73.5 mm
Thickness

8.9 mm

10.9 mm
Height unfolded

-

161.2 mm
Width unfolded

-

143.3 mm
Thickness unfolded

-

5.3 mm
Weight

227 (Sub6) / 229 (mmWave) g

255/259 g
Payment

Samsung Pay (Visa, MasterCard certified)

-
Waterproof

IP68 (1.5m and 30 mins)

-
Dust proof

IP68

-
Colors

Black, Brown, Silver, Navy, Titanium

Black, Gold

Display
Display type

Dynamic AMOLED 2X

Foldable LTPO OLED+
Physical size

6.8 inches

8.03 inches
Resolution

1440 x 3200 pixels

1916 x 2160 pixels
Pixel density

515 ppi

360 ppi
Display colors

16777216

1073741824
Protection

Scratch resistant, Corning Gorilla Glass Victus

UTG glass, Corning Gorilla Glass Victus 2
Display features

120Hz, HDR10+, 1500 nits (peak), Infinity-O display, Always-On display

120Hz, HDR10+, Dolby Vision, 1300 nits (peak)
Cover display

-

AMOLED
Cover display physical size

-

6.56 inches
Cover display resolution

-

1080 x 2520 pixels
Cover display features

-

120Hz, HDR10+, Dolby Vision, 2600 nits (peak)
DxOMark display score

91

-

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 2.9 GHz Cortex-X1

Single-core 3.36 GHz Cortex-X3
CPU(second)

Triple-core 2.80 GHz Cortex-A78

dual-core 2.8 GHz Cortex-A715
CPU(third)

Quad-core 2.2 GHz Cortex-A55

Dual-core 2.8 GHz Cortex-A710
CPU(fourth)

Triple-core 2.0 GHz Cortex-A510
Chipset

Exynos 2100

Qualcomm SM8550-AC Snapdragon 8 Gen 2
GPU

Mali-G78 MP14

Adreno 740
Memory RAM

12, 16 GB

12, 16 GB
Internal storage

128, 256, 512 GB

256, 512, 1024 GB
Memory card

No

No
Storage

UFS 3.1

UFS 4.0

OS
OS

Android 11, One UI 3.1

Android 13, MIUI Fold 14

Main camera
Camera type

Quad

Quad
Main camera

(wide) , 108 MP, f/1.8 , 26 mm, 1/1.33" , 0.8 µm

(wide) , 50 MP, f/1.8 , 23 mm, 1/1.49" , 1.0 µm
(periscope telephoto) , 10 MP, f/4.9 , 1/3.24" , 1.22 µm, 10x optical zoom

(telephoto) , 10 MP, f/2.0 , 3.2x optical zoom , 75 mm
(telephoto) , 10 MP, f/2.4 , 70 mm, 1/3.24" , 1.22 µm, 3x optical zoom

(telephoto) , 10 MP, f/2.9 , 115 mm, 5x optical zoom
(ultrawide) , 12 MP, f/2.2 , 13 mm, 1/2.55" , 1.4 µm

(ultrawide) , 12 MP, f/2.2 , 15 mm, 120˚
Primary camera resolution

12000 x 9000 pixels

8190 x 6120 pixels
Primary camera video

8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS

8K@24fps, 4K@24/30/60fps, 1080p@30/60/120/240/960/1920fps, Dolby Vision HDR
Primary camera flash

LED flash

LED flash
Camera features

Autofocus, continuous shooting, digital zoom, optical zoom, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, laser autofocus

Autofocus, continuous autofocus, digital zoom, optical zoom, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, face unlock, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus, Dolby Vision, Leica Native Dual Quality, super night 2.0
DxOMark photo

128

-
DxOMark zoom

76

-
DxOMark video

98

-
DxOMark camera score

121

-

Selfie camera
Selfie camera type

-

Single
Selfie camera

(wide) , 40 MP, f/2.2 , 80˚ , 26 mm, 1/2.8" , 0.7 µm

(wide) , 20 MP, f/2.3 , 23 mm
Selfie camera resolution

7968 x 5480 pixels

-
Selfie camera features

Autofocus, HDR, phase detection autofocus

Face unlock, HDR, Dolby Vision
Selfie camera video

4K@30/60fps, 1080p@30fps

1080p@30/60fps
DxOMark photo

105

-
DxOMark video

93

-
DxOMark camera score

100

-

Sound
3.5mm jack

No

No
Loudspeaker

Yes, with stereo speakers

Yes, with stereo speakers
Earpiece

Yes

Yes

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax, 6E

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax, 802.11be
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 3.2

Type-C 3.2
USB On-The-Go

Yes

-
Bluetooth

v5.2

v5.3
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Infrared

-

Yes
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

-

Yes
NavIC

-

Yes

Features
Sensors

Accelerometer, barometer, compass, fingerprint, gyroscope, proximity

Accelerometer, barometer, compass, color spectrum, fingerprint, gyroscope, proximity