Oppo Reno 3 5G vs vivo V21

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; CDMA2000 1xEV-DO

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

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 18(800), 19(800), 20(800), 26(850), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 39, 40, 41
5G network

5G band 1(2100), 41(2500), 78(3500), 79(4700); 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
LTE speed

LTE-A

LTE-A, 1200 Mbps download, 150 Mbps upload
5G speed

4.7 Gbps download, 2.5 Gbps upload

-
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame

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

Display
Display type

AMOLED

AMOLED
Physical size

6.4 inches

6.44 inches
Resolution

1080 x 2400 pixels

1080 x 2400 pixels
Pixel density

408 ppi

409 ppi
Display colors

16777216

16777216
Protection

Scratch resistant, 3D curved glass screen, Corning Gorilla Glass 5

Scratch resistant, 2.5D curved glass screen
Multitouch

Yes

-
Display features

430 nits max brightness

-

Main camera
Camera type

Quad

Triple
Main camera

8 MP, f/1.8 , 26 mm, 1/1.72" , 0.8 µm

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

8 MP, f/2.2 , 1/4.0" , 1.12 µm, (ultrawide) , 120˚ , 16 mm
2 MP, f/2.4 , 1/5.0" , 1.75 µm

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

-

9280 x 6920 pixels
Primary camera video

2160p@30fps, 1080p@30/60/120fps; gyro-EIS, OIS

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, contrast 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
QZSS

Yes

-

Features
Sensors

Accelerometer, compass, fingerprint, gyroscope, light, proximity

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)