Ulefone Armor 21 vs Xiaomi Redmi K50i

Ulefone Armor 21

Xiaomi Redmi K50i

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

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

HSDPA 850, 900, 1700(AWS), 1900, 2100
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, 20, 28, 38, 40, 41
5G network

-

5G band 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 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

Display
Display type

IPS LCD

FFS LCD
Physical size

6.58 inches

6.6 inches
Resolution

1080 x 2408 pixels

1080 x 2460 pixels
Pixel density

401 ppi

407 ppi
Display colors

16777216

16777216
Protection

Scratch resistant

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5
Display features

-

144Hz, HDR10, Dolby Vision, 500 nits (typ), 650 nits (HBM)

Main camera
Camera type

Dual

Triple
Main camera

(wide) , 64 MP, f/1.9 , 0.8 µm

(wide) , 64 MP, f/1.9 , 0.8 µm, 1/1.72"
(night vision) , 24 MP, f/1.8

(ultrawide) , 8 MP, f/2.2 , 120˚
(macro) , 2 MP, f/2.4
Primary camera resolution

9280 x 6180 pixels

9280 x 6920 pixels
Primary camera video

-

4K@30fps, 1080p@30/60fps
Primary camera flash

LED flash

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

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 16 MP, f/2.2 , 1.0 µm

(wide) , 16 MP
Selfie camera resolution

4608 x 3456 pixels

9280 x 6920 pixels
Selfie camera features

Face unlock, HDR, face detection

Face unlock, HDR, face detection
Selfie camera video

1080p@30fps

1080p@30fps

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 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.2

v5.3
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Infrared

Yes

Yes
NFC

Yes

No
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

-

Yes

Features
Sensors

Accelerometer, barometer, compass, fingerprint, gyroscope, proximity

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