Realme 7i vs vivo V21s

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 2100

HSDPA 850, 900, 1700(AWS), 1900, 2100
4G network

LTE frequency band 1, 3, 5, 8, 38, 40, 41

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 66
5G network

-

5G band 1, 28, 40, 41, 77, 78, 79 SA/NSA
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

EV-DO Rev.A 3.1 Mbps download, 1.8 Mbps upload
LTE speed

LTE-A, Cat12, 603 Mbps download, 102 Mbps upload

LTE-A, Cat12, 1200 Mbps download, 150 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Aluminium alloy, plastic

Plastic
SIM

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

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

164.1 mm

159.7 mm
Width

75.5 mm

73.9 mm
Thickness

8.9 mm

7.3 mm
Weight

188 g

176 / 177 g
Colors

Blue, Green

Blue, Gradient

Display
Display type

IPS LCD

AMOLED
Physical size

6.5 inches

6.44 inches
Resolution

720 x 1600 pixels

1080 x 2404 pixels
Pixel density

270 ppi

409 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass

Scratch resistant
Display features

90Hz

-

Main camera
Camera type

Quad

Triple
Main camera

(wide) , 64 MP, f/1.8 , 26 mm, 1/1.73" , 0.8 µm

(wide) , 64 MP, f/1.8 , 26 mm, 0.7 µm
(ultrawide) , 8 MP, f/2.3 , 119˚ , 1/4.0" , 1.12 µm

(ultrawide) , 8 MP, f/2.2 , 120˚ , 1/4.0" , 1.12 µm, 16 mm
(macro) , 2 MP, f/2.4

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

9280 x 6920 pixels

9280 x 6920 pixels
Primary camera video

1080p@30fps

4K@30fps, 1080p@30/60fps
Primary camera flash

LED flash

LED flash
Camera features

Autofocus, continuous shooting, digital zoom, digital 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

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

Selfie camera
Selfie camera type

Single

Single
Selfie camera

(wide) , 16 MP, f/2.1 , 79˚ , 1/3" , 1.0 µm

(wide) , 44 MP, f/2.0 , 150 mm
Selfie camera resolution

4608 x 3120 pixels

-
Selfie camera features

Digital image stabilization, face unlock, face detection, HDR

Autofocus, face unlock, HDR, optical image stabilization
Selfie camera video

1080p@30fps, gyro-EIS

4K@30fps, 1080p@30fps

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
WLAN WiFi Hotspot

Yes

-
WLAN WiFi Direct

Yes

-
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v5.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
NFC

No

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

-

Yes
BDS

Yes

Yes