Xiaomi Mix Fold 3 vs vivo V21

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800, 1900

GSM 850, 900, 1800, 1900
3G network

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

HSDPA 850, 900, 1700(AWS), 1900, 2100
4G network

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

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 39, 40, 41
5G network

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
EV-DO speed

-

EV-DO Rev.A 3.1 Mbps download, 1.8 Mbps upload
LTE speed

LTE-A (CA)

LTE-A, 1200 Mbps download, 150 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

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

Glass front, plastic frame, plastic back
SIM

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

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

161.2 mm

159.7 mm
Width

73.5 mm

73.9 mm
Thickness

10.9 mm

7.3 mm
Height unfolded

161.2 mm

-
Width unfolded

143.3 mm

-
Thickness unfolded

5.3 mm

-
Weight

255/259 g

176 g
Colors

Black, Gold

Blue, Sunset Dazzle

Display
Display type

Foldable LTPO OLED+

AMOLED
Physical size

8.03 inches

6.44 inches
Resolution

1916 x 2160 pixels

1080 x 2400 pixels
Pixel density

360 ppi

409 ppi
Display colors

1073741824

16777216
Protection

UTG glass, Corning Gorilla Glass Victus 2

Scratch resistant, 2.5D curved glass screen
Display features

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)

-

Hardware
CPU

Octa-core

Octa-core
CPU

Single-core 3.36 GHz Cortex-X3

Dual-core 2.4 GHz Cortex-A76
CPU(second)

dual-core 2.8 GHz Cortex-A715

Hexa-core 2.0 GHz Cortex-A55
CPU(third)

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

Triple-core 2.0 GHz Cortex-A510
Chipset

Qualcomm SM8550-AC Snapdragon 8 Gen 2

MediaTek MT6853 Dimensity 800U 5G
GPU

Adreno 740

Mali-G57 MC3
Memory RAM

12, 16 GB

8 GB
Internal storage

256, 512, 1024 GB

128 GB
Memory card

No

microSD, microSDHC, microSDXC
Memory card max

-

1 TB
Storage

UFS 4.0

UFS 2.2

Main camera
Camera type

Quad

Triple
Main camera

(wide) , 50 MP, f/1.8 , 23 mm, 1/1.49" , 1.0 µm

(wide) , 64 MP, f/1.8 , 26 mm, 1/1.72" , 0.8 µm
(telephoto) , 10 MP, f/2.0 , 75 mm, 3.2x optical zoom

(ultrawide) , 8 MP, f/2.2 , 16 mm, 120˚ , 1/4.0" , 1.12 µm
(telephoto) , 10 MP, f/2.9 , 115 mm, 5x optical zoom

(macro) , 2 MP, f/2.4
(ultrawide) , 12 MP, f/2.2 , 120˚ , 15 mm
Primary camera resolution

8190 x 6120 pixels

9280 x 6920 pixels
Primary camera video

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

4K@30fps (no OIS), 1080p@30/60fps
Primary camera flash

LED flash

LED flash
Camera features

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

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

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 20 MP, f/2.3 , 23 mm

(wide) , 44 MP, f/2.0
Selfie camera features

Face unlock, HDR, Dolby Vision

Autofocus, face unlock, HDR
Selfie camera video

1080p@30/60fps

4K@30fps (no OIS), 1080p@30fps

Connectivity
WLAN

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

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 3.2

Type-C 2.0
USB On-The-Go

-

Yes
Bluetooth

v5.3

v5.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Infrared

Yes

-
NFC

Yes

No
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, color spectrum, fingerprint, gyroscope, proximity

Accelerometer, compass, fingerprint, gyroscope, proximity

Battery
Battery type

Li-Po

Li-Po
Battery capacity

4800 mAh

4000 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

Quick Charge 4, 67W (100% in 40 min)

Yes (63% in 30 min)
Fast wireless charging

Yes, 50W (100% in 55 min)

-