Samsung Galaxy M40 vs Xiaomi Mix 4

Network
2G network

GSM 850, 900, 1800, 1900

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

HSDPA 850, 900, 2100

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

LTE frequency band 1(2100), 3(1800), 5(850), 8(900), 40(2300), 41(2500)

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, 5, 8, 28, 41, 77, 78, 79 SA/NSA/Sub6
HSDPA speed

42 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE Cat12, 603 Mbps download, 102 Mbps upload

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

Yes

Yes
EDGE

Yes

Class 8

Design
Build

Plastic

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

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

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

155.3 mm

162.6 mm
Width

73.9 mm

75.4 mm
Thickness

7.9 mm

8 mm
Weight

168 g

225 g
Splash resistant

-

IP53
Dust proof

-

IP53
Colors

Black, Blue

Black, Gray, White

Display
Display type

PLS capacitive touchscreen

AMOLED
Physical size

6.3 inches

6.67 inches
Resolution

1080 x 2340 pixels

1080 x 2400 pixels
Pixel density

409 ppi

395 ppi
Display colors

16777216

1073741824
Protection

Scratch resistant, Corning Gorilla Glass

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

Yes

-
Display features

-

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

Main camera
Camera type

Triple

Triple
Main camera

32 MP, f/1.7 , 0.8 µm

108 MP, f/1.9 , 0.8 µm, (wide) , 24 mm, 1/1.33"
8 MP, f/2.2 , 12 mm, 1.12 µm

8 MP, f/4.1 , 120 mm, (periscope telephoto) , 5x optical zoom
5 MP, f/2.2

13 MP, f/2.2 , 123˚ , (ultrawide) , 12 mm, 1/3.06" , 1.12 µm
Primary camera resolution

6528 x 4896 pixels

-
Primary camera video

2160p@30fps, 1080p@30fps

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

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

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 reversible connector

Type-C 2.0
USB On-The-Go

Yes

-
Bluetooth

v5.0

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth AVRCP

Yes

-
bluetooth HFP

Yes

-
bluetooth HID

Yes

-
bluetooth OPP

Yes

-
bluetooth PAN

Yes

-
bluetooth LE

-

Yes
bluetooth DIP

Yes

-
bluetooth MAP

Yes

-
bluetooth PBAP

PBAP/PAB

-
bluetooth HOGP

Yes

-
bluetooth HSP

Yes

-
Bluetooth AptX

-

aptX HD
Infrared

-

Yes
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with dual-band A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

-
Beidou

Yes

-
BDS

-

Yes
QZSS

-

Yes
NavIC

-

Yes

Features
Sensors

Accelerometer, compass, gyroscope, hall, proximity, light, fingerprint

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