Nokia XR21 vs Xiaomi Mix 4

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, 13, 17, 20, 25, 26, 28, 32, 38, 39, 40, 41, 42, 43, 48, 66, 71

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, 2, 3, 5, 7, 20, 25, 28, 40, 41, 66, 71, 77, 78, 79 SA/NSA

5G band 1, 3, 5, 8, 28, 41, 77, 78, 79 SA/NSA/Sub6
HSDPA speed

45.4 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, 750 Mbps download, 211 Mbps upload

LTE-A, 1174 Mbps download, 210 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Class 8

Design
Build

Glass front (Gorilla Glass Victus), plastic back, plastic frame

Glass front (Gorilla Glass Victus), ceramic back, aluminum frame
SIM

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

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

168 mm

162.6 mm
Width

78.6 mm

75.4 mm
Thickness

10.6 mm

8 mm
Weight

231 g

225 g
Waterproof

IP68/IP69K (1.5m and 60 mins)

-
Splash resistant

-

IP53
Dust proof

IP68/IP69K

IP53
MIL-STD-810H

Yes

-
Colors

Black, Green

Black, Gray, White

Display
Display type

IPS LCD

AMOLED
Physical size

6.49 inches

6.67 inches
Resolution

1080 x 2400 pixels

1080 x 2400 pixels
Pixel density

406 ppi

395 ppi
Display colors

16777216

1073741824
Protection

2D curved glass screen, Corning Gorilla Glass Victus

Scratch resistant, 3D curved glass screen, Corning Gorilla Glass Victus
Display features

-

120Hz, HDR10+, Dolby Vision, 800 nits (HBM), Wide color gamut, True-tone

Main camera
Camera type

Dual

Triple
Main camera

(wide) , 64 MP, f/1.8 , 1/2"

(wide) , 108 MP, f/1.9 , 1/1.33" , 24 mm, 0.8 µm
(ultrawide) , 8 MP, f/2.2 , 1/4.0" , 1.12 µm

(periscope telephoto) , 8 MP, f/4.1 , 120 mm, 5x optical zoom
123˚ , (ultrawide) , 13 MP, f/2.2 , 12 mm, 1/3.06" , 1.12 µm
Primary camera resolution

9280 x 6920 pixels

-
Primary camera video

4K@30fps, 1080p@30fps

8K@24fps, 4K@30/60fps, 1080p@30/60/120/480fps; gyro-EIS, HDR10+
Primary camera flash

dual-LED dual-tone flash

dual-LED flash
Camera features

Autofocus, geotagging, panorama, HDR, touch focus, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, speedwarp

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, laser autofocus, AI 2.0, night mode 2.0, stagger HDR

Connectivity
WLAN

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

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

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

Yes

-
Bluetooth

v5.1

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX Adaptive

aptX HD
Infrared

-

Yes
NFC

Yes (market dependent)

Yes
GPS

Yes, with dual-band A-GPS

Yes, with dual-band A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

-
BDS

Yes

Yes
QZSS

Yes

Yes
NavIC

Yes

Yes

Features
Sensors

Accelerometer, barometer, compass, fingerprint, gyroscope, proximity

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

Battery
Battery type

Li-Po

Li-Po
Battery capacity

4800 mAh

4500 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

USB Power Delivery 2.0, 33W

Quick Charge 4 (100% in 15 min)
Fast wireless charging

-

Yes (100% in 28 min)