Samsung Galaxy S21+ 5G vs Xiaomi Redmi K40S

Samsung Galaxy S21+ 5G

Xiaomi Redmi K40S

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800, 1900 & TD-SCDMA

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

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

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

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71

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

5G band SA/NSA/Sub6/mmWave

5G band 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA
HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
LTE speed

LTE-A (CA)

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Gorilla Glass Victus), glass back (Gorilla Glass), aluminum frame

Glass front (Gorilla Glass 5), plastic back
SIM

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

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

161.5 mm

163.2 mm
Width

75.6 mm

76 mm
Thickness

7.8 mm

7.7 mm
Weight

200 (Sub6) / 202 (mmWave) g

195 g
Payment

Samsung Pay (Visa, MasterCard certified)

-
Waterproof

IP68 (1.5m and 30 mins)

-
Splash resistant

-

Yes
Dust proof

IP68

-
Colors

Black, Gold, Pink, Red, Silver, Violet

Black, Blue, Gray, Green

Display
Display type

Dynamic AMOLED 2X

AMOLED
Physical size

6.7 inches

6.67 inches
Resolution

1080 x 2400 pixels

1080 x 2400 pixels
Pixel density

394 ppi

395 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, Corning Gorilla Glass Victus

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

120Hz, HDR10+, 1300 nits (peak), Infinity-O display, Always-On display

120Hz, HDR10+, 1300 nits (peak)

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 12 MP, f/1.8 , 26 mm, 1/1.76" , 1.8 µm

(wide) , 48 MP, f/1.8 , 1/2" , 0.8 µm
(telephoto) , 64 MP, f/2.0 , 1/1.72" , 0.8 µm, 1.1x optical zoom , 3x hybrid zoom

(ultrawide) , 8 MP, 119˚
120˚ , (ultrawide) , 12 MP, f/2.2 , 1/2.55" , 1.4 µm

(macro) , 2 MP, f/2.4
Primary camera resolution

4032 x 3024 pixels

8000 x 6000 pixels
Primary camera video

8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS

4K@30fps, 1080p@30/60/120fps, 720p@960fps; gyro-EIS
Primary camera flash

LED flash

dual-LED dual-tone flash
Camera features

Autofocus, continuous shooting, digital zoom, optical zoom, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-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
DxOMark photo

123

-
DxOMark zoom

77

-
DxOMark video

93

-
DxOMark camera score

116

-

Selfie camera
Selfie camera type

-

Single
Selfie camera

(wide) , 10 MP, f/2.2 , 80˚ , 26 mm, 1/3.24" , 1.22 µm

(wide) , 20 MP
Selfie camera resolution

3648 x 2736 pixels

-
Selfie camera features

Autofocus, HDR, phase detection autofocus

Face unlock, HDR
Selfie camera video

4K@30/60fps, 1080p@30fps

1080p@30/120fps

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax, 6E

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 3.2

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v5.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
NFC

Yes

Yes
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, fingerprint, gyroscope, proximity

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