Ulefone Armor 21 vs Xiaomi Mi Mix Fold

Ulefone Armor 21

Xiaomi Mi Mix Fold

Network
2G network

GSM 850, 900, 1800, 1900

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

HSDPA 850, 900, 1700(AWS), 1900, 2100

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

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 19, 20, 28, 34, 38, 39, 40, 41, 66

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42
5G network

-

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

-

42.2 Mbps
HSUPA speed

-

5.76 Mbps
EV-DO speed

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

-
LTE speed

LTE

LTE-A (CA)
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Polycarbonate, TPU, metal

Glass front (folded), plastic front (unfolded), glass back (Gorilla Glass 5) or ceramic back, aluminum frame
SIM

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

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

176 mm

173.3 mm
Width

81.6 mm

69.8 mm
Thickness

18.1 mm

9 mm
Height unfolded

-

173.3 mm
Width unfolded

-

133.4 mm
Thickness unfolded

-

17.2 mm
Weight

400 g

317 (glass) / 332 (ceramic) g
Waterproof

IP68/IP69K (1.5m and 30 mins)

-
Dust proof

IP68/IP69K

-
MIL-STD-810H

Yes

-
Colors

Black

Black, Ceramic

Display
Display type

IPS LCD

Foldable AMOLED
Physical size

6.58 inches

8.01 inches
Resolution

1080 x 2408 pixels

1860 x 2480 pixels
Pixel density

401 ppi

387 ppi
Display colors

16777216

1073741824
Protection

Scratch resistant

Scratch resistant
Display features

-

HDR10+, Dolby Vision, 600 nits (typ), 900 nits (peak)
Cover display

-

AMOLED
Cover display physical size

-

6.52 inches
Cover display resolution

-

840 x 2520 pixels
Cover display features

-

90Hz, HDR10+, Dolby Vision, 650 nits (typ), 900 nits (peak)

Main camera
Camera type

Dual

Triple
Main camera

(wide) , 64 MP, f/1.9 , 0.8 µm

(wide) , 108 MP, f/1.8 , 0.7 µm, 80 mm, 1/1.52"
(night vision) , 24 MP, f/1.8

(telephoto/macro) , 8 MP, 3x optical zoom
123 , (ultrawide) , 13 MP, f/2.4 , 1.12 µm
Primary camera resolution

9280 x 6180 pixels

-
Primary camera video

-

8K@24/30fps, 4K@30/60fps, 1080p@30/60fps, gyro-EIS
Primary camera flash

LED flash

dual LED flash
Camera features

Autofocus, continuous shooting, digital zoom, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection 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, laser autofocus, stagger HDR, AI 2.0, night mode 2.0

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 16 MP, f/2.2 , 1.0 µm

(wide) , 20 MP, f/2.4 , 0.8 µm, 80˚ , 27 mm, 1/3.4"
Selfie camera resolution

4608 x 3456 pixels

5184 x 3880 pixels
Selfie camera features

Face unlock, HDR, face detection

Face unlock, HDR, panorama
Selfie camera video

1080p@30fps

1080p@30/60fps, 720p@120fps

Connectivity
WLAN

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

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

Yes

Yes
WLAN WiFi Direct

-

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C
USB On-The-Go

Yes

-
Bluetooth

v5.2

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Infrared

Yes

Yes
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with dual-band 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