Realme 3 Pro vs Samsung Galaxy S21 5G

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800, 1900 & TD-SCDMA
3G network

HSDPA 850, 900, 1900, 2100

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

LTE frequency band 1(2100), 3(1800), 5(850), 8(900), 38(2600), 40(2300), 41(2500)

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
5G network

-

5G band SA/NSA/Sub6/mmWave
HSDPA speed

-

42.2 Mbps
HSUPA speed

-

5.76 Mbps
LTE speed

LTE Cat12, 603 Mbps download, 102 Mbps upload

LTE-A (CA), 2000 Mbps download, 200 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Front glass, plastic body

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

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

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

156.8 mm

151.7 mm
Width

74.2 mm

71.2 mm
Thickness

8.3 mm

7.9 mm
Weight

172 g

169 (Sub6) / 171 (mmWave) g
Payment

-

Samsung Pay (Visa, MasterCard certified)
Waterproof

-

IP68 (1.5m and 30 mins)
Dust proof

-

IP68
Colors

Blue, Purple, Gray

Gray, Pink, Violet, White

Display
Display type

IPS capacitive touchscreen

Dynamic AMOLED 2X
Physical size

6.3 inches

6.2 inches
Resolution

1080 x 2340 pixels

1080 x 2400 pixels
Pixel density

409 ppi

421 ppi
Display colors

16777216

16777216
Protection

2.5D curved glass screen, Scratch resistant, Corning Gorilla Glass 5, LTPS (Low Temperature PolySilicon)

Scratch resistant, Corning Gorilla Glass Victus
Multitouch

Yes

-
Display features

-

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

Main camera
Camera type

Dual

Triple
Main camera

16 MP, f/1.7 , 1/2.6" , 1.22 µm

12 MP, f/1.8 , 1/1.76" , 1.8 µm, (wide) , 26 mm
5 MP, f/2.4

64 MP, f/2.0 , (telephoto) , 29 mm, 1/1.72" , 0.8 µm, 1.1x optical zoom , 3x hybrid zoom
120˚ , (ultrawide) , 12 MP, f/2.2 , 13 mm, 1/2.55" , 1.4 µm
Primary camera resolution

4608 x 3456 pixels

4032 x 3024 pixels
Primary camera video

2160p@30fps, 1080p@30/120fps, 720p@960fps

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

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
DxOMark photo

-

123
DxOMark zoom

-

77
DxOMark video

-

93
DxOMark camera score

-

116

Selfie camera
Selfie camera

25 MP, f/2 , 1/2.8" , 1.8 µm

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

5760 x 4312 pixels

3648 x 2736 pixels
Selfie camera features

-

Autofocus, HDR, phase detection autofocus
Selfie camera video

1080p@30fps

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

-

100
DxOMark video

-

95
DxOMark camera score

-

98

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, 6E
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

microUSB 2.0

Type-C 3.2
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth EDR

Yes

-
NFC

-

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

-

Yes
BDS

-

Yes

Features
Sensors

Accelerometer, compass, gyroscope, proximity, light, fingerprint

Accelerometer, barometer, compass, fingerprint, gyroscope, proximity