Oppo Reno 3 vs vivo V21 5G

Network
2G network

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

GSM 850, 900, 1800, 1900
3G network

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100

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

LTE frequency band 1(2100), 5(850), 7(2600), 8(900), 39(1900), 40(2300), 41(2500)

LTE frequency band 1, 2, 3, 4, 5, 8, 34, 38, 40, 41 - India
5G network

5G band 41(2500), 78(3500); SA, NSA

5G band 78 Sub6 - India
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, 1200 Mbps download, 151 Mbps upload
5G speed

4.7 Gbps download, 2.5 Gbps upload

-
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Aluminium alloy, glass

Glass front, plastic frame, plastic back
SIM

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

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

160.3 mm

159.7 mm
Width

74.3 mm

73.9 mm
Thickness

8 mm

7.3 mm
Weight

181 g

176 g
Colors

Black, Blue, Sunrise, White

Blue, Sunset Dazzle, White

Display
Display type

AMOLED

AMOLED
Physical size

6.4 inches

6.44 inches
Resolution

1080 x 2400 pixels

1080 x 2400 pixels
Pixel density

411 ppi

409 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, Corning Gorilla Glass 5

Scratch resistant, 2.5D curved glass screen
Multitouch

Yes

-
Display features

-

90Hz, HDR10+, 500 nits (typ)

Main camera
Camera type

Quad

Triple
Main camera

64 MP, f/1.8 , 26 mm, 1/1.7" , 0.8 µm

64 MP, f/1.8 , 26 mm, 1/1.72" , 0.8 µm, (wide)
8 MP, f/2.2 , 13 mm, 1/3.2" , 1.4 µm

8 MP, f/2.2 , 16 mm, 1/4.0" , 1.12 µm, (ultrawide) , 120˚
2 MP, f/2.4 , 1/5" , 1.75 µm

2 MP, f/2.4 , (macro)
2 MP, f/2.4 , 1/5" , 1.75 µm
Primary camera resolution

8000 x 6000 pixels

9280 x 6920 pixels
Primary camera video

2160p@30fps, 1080p@30/60fps

4K@30fps (no OIS), 1080p@30/60fps
Primary camera flash

LED flash

LED flash
Camera features

Autofocus, continuous 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

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

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

Yes
WLAN WiFi Direct

Yes

Yes
Wi-Fi display

Yes

-
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 1.0 reversible connector

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v5.1
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
NFC

Yes

No
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, light, proximity, in-display fingerprint sensor

Accelerometer, compass, fingerprint, gyroscope, proximity

Battery
Battery type

Li-Po

Li-Po
Battery capacity

4025 mAh

4000 mAh
Battery removable

Non-removable

Non-removable
Fast battery charging

VOOC Flash Charge 4.0 (50% in 20min)

Yes (63% in 30 min)