Realme 11 vs Samsung Galaxy S21 5G

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

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

HSDPA 850, 900, 2100; CDMA2000 1x

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

LTE frequency band 1, 3, 5, 7, 8, 28, 34, 38, 39, 40, 41

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 1, 5, 8, 28, 41, 77, 78 SA/NSA

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

42.2 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

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

Yes

Yes
EDGE

Yes

Yes

Design
Build

Plastic, glass, faux leather

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

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

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

159.8 mm

151.7 mm
Width

72.9 mm

71.2 mm
Thickness

7.9 mm

7.9 mm
Weight

182 g

169 (Sub6) / 171 (mmWave) g
Payment

-

Samsung Pay (Visa, MasterCard certified)
Waterproof

-

IP68 (1.5m and 30 mins)
Dust proof

-

IP68
Colors

Black, Orange

Gray, Pink, Violet, White

Display
Display type

Super AMOLED

Dynamic AMOLED 2X
Physical size

6.43 inches

6.2 inches
Resolution

1080 x 2400 pixels

1080 x 2400 pixels
Pixel density

409 ppi

421 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 2.5D curved glass screen

Scratch resistant, Corning Gorilla Glass Victus
Display features

90Hz, 1000 nits (peak)

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

Main camera
Camera type

Dual

Triple
Main camera

(wide) , 64 MP, f/1.8 , 80˚ , 25 mm, 1/2.0" , 0.7 µm

(wide) , 12 MP, f/1.8 , 26 mm, 1/1.76" , 1.8 µm
(depth) , 2 MP, f/2.4 , 88˚ , 1/5" , 1.75 µm

(telephoto) , 64 MP, f/2.0 , 1/1.72" , 0.8 µm, 29 mm, 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

9280 x 6920 pixels

4032 x 3024 pixels
Primary camera video

1080p@30fps

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, digital image stabilization, optical image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus, proLight, smart ISO Pro, street mode 3.0

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 type

Single

-
Selfie camera

(wide) , 8 MP, f/2.1 , 83˚ , 1/4" , 1.12 µm

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

3264 x 2448 pixels

3648 x 2736 pixels
Selfie camera features

Face unlock, HDR, face detection

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, 802.11ax

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

-

Yes
WLAN WiFi Direct

-

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C 3.2
USB On-The-Go

-

Yes
Bluetooth

v5.1

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
NFC

Yes (market dependent)

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

-