Oppo F21 Pro vs vivo S18 Pro

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800
3G network

HSDPA 850, 900, 2100

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

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

LTE frequency band 1, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41
5G network

-

5G band 1, 3, 5, 8, 28, 38, 40, 41, 77, 78 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, 391 Mbps download, 150 Mbps upload

LTE-A
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Aluminium alloy, glass

Glass front, plastic frame
SIM

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

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

159.9 mm

164.4 mm
Width

73.2 mm

75.1 mm
Thickness

7.5 mm

7.5 mm
Weight

175 g

188 g
Waterproof

IPX4

IP54
Dust proof

IPX4

IP54
Build features

RGB ring light around the camera (notifications, charging progress)

-
Colors

Black, Orange

Black, Blue, Silver

Display
Display type

AMOLED

AMOLED
Physical size

6.43 inches

6.78 inches
Resolution

1080 x 2400 pixels

1260 x 2800 pixels
Pixel density

409 ppi

453 ppi
Display colors

16777216

1073741824
Protection

Corning Gorilla Glass 5

Scratch resistant, 3D curved glass screen
Display features

90Hz, 430 nits (typ), 600 nits (HBM), 800 nits (peak)

120Hz, 2800 nits (peak)

Main camera
Camera type

Triple

Triple
Main camera

(wide) , 64 MP, f/1.7 , 79˚ , 26 mm, 1/2.0" , 0.7 µm

(wide) , 50 MP, f/1.9 , 1/1.49" , 20x digital zoom
(microscope) , 2 MP, f/3.3 , 65˚

(telephoto) , 12 MP, f/2.0 , 2x optical zoom
89˚ , (depth) , 2 MP, f/2.4 , 1.75 µm

(ultrawide) , 50 MP, f/2.0 , 1/2.76"
Primary camera resolution

9280 x 6920 pixels

8120 x 6180 pixels
Primary camera video

1080p@30fps, gyro-EIS

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

LED flash

Ring-LED flash
Camera features

Autofocus, continuous 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, contrast detection autofocus

Autofocus, continuous shooting, digital zoom, optical 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) , 32 MP, f/2.4 , 24 mm, 1/2.74" , 0.7 µm

(wide) , 50 MP, f/2.0 , 22 mm
Selfie camera resolution

-

8192 x 6144 pixels
Selfie camera features

Face unlock, HDR

Face unlock, HDR, face detection, autofocus
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, 802.11ax, 802.11be
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 2.0

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.1

v5.3
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX HD

aptX HD
NFC

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
BDS

Yes

Yes
QZSS

Yes

Yes
NavIC

-

Yes