score
Largest Gadget Discovery Site in India

Samsung Galaxy S9 Plus vs vivo X21

Summary
Performance

Samsung Exynos 9 Octa 9810

6 GB RAM

Snapdragon 660

6 GB RAM

Snapdragon 6 Gen 1

8 GB RAM

Display

6.2" (15.75 cm)

1440x2960 px (QHD+)

6.28" (15.95 cm)

1080x2280 px (FHD+)

6.78" (17.22 cm)

1080x2400 px (FHD+)

Rear Camera

12 MP + 12 MP

Dual Camera

12 MP + 5 MP

Dual Camera

50 MP + 8 MP

Dual Camera

Front Camera

8 MP

Single Camera

12 MP

Single Camera

50 MP

Single Camera

Battery

3500 mAh

25 h talktime (3G)

3200 mAh

5500 mAh

Storage

64 GB

400 GB (Expandable)

128 GB

256 GB (Expandable)

128 GB

1 TB (Expandable)

Expert Rating

4.5/5

Read Expert Review

3.5/5

Read Expert Review

7.5/10

Read Expert Review

User Ratings

★★★★★
★★★★★

4.5/5 based on 39,344 ratings

★★★★★
★★★★★

4.2/5 based on 2,009 ratings

Benchmarks

N/A

Compare Prices
Rs. 26,290 @Amazon Buy
Not available in any other store
Rs. 19,790 @Flipkart Buy
Not available in any other store
Rs. 27,999 @Vivo Buy
Not available in any other store
General
Launch Date

March 16, 2018 (Official)

May 29, 2018 (Official)

May 2, 2024 (Official)

Operating System

Android v8.0 (Oreo)

Android v8.1 (Oreo)

Android v14

Custom UI

Funtouch OS

Funtouch OS

Performance
Good
Good
Very Good
Chipset

Samsung Exynos 9 Octa 9810

Qualcomm Snapdragon 660

Qualcomm Snapdragon 6 Gen 1

CPU

Octa core (2.7 GHz, Quad core, M2 Mongoose + 1.7 GHz, Quad core, Cortex A53)

Octa core (2.2 GHz, Quad core, Kryo 260 + 1.84 GHz, Quad core, Kryo 260)

Octa core (2.2 GHz, Quad core, Cortex A78 + 1.8 GHz, Quad core, Cortex A55)

Architecture

64 bit

64 bit

64 bit

Graphics

Mali-G72 MP18

Adreno 512

Adreno 710

RAM

6 GB

6 GB

8 GB

RAM Type

LPDDR4X

LPDDR4X

Display
Excellent
Very Good
Very Good
Display Type

Super AMOLED

Super AMOLED

Screen Size

6.2 " (15.75 cm)

6.28 " (15.95 cm)

6.78 " (17.22 cm)

Resolution

1440x2960 px (QHD+)

1080x2280 px (FHD+)

1080x2400 px (FHD+)

Aspect Ratio

18.5:9

19:9

20:9

Pixel Density

531 ppi

402 ppi

388 ppi

Screen to Body Ratio (calculated)

83.99 %

84.93 %

90.33 %

Screen Protection

Corning Gorilla Glass v5

Corning Gorilla Glass v3

Bezel-less display

Touch Screen

, Capacitive Touchscreen, Multi-touch

, Capacitive Touchscreen, Multi-touch

, Capacitive Touchscreen, Multi-touch

Peak Brightness

1300 nits

Refresh Rate

120 Hz

Screen to Body Ratio (claimed by the brand)

93.3 %

Design
Size Compare
Size Compare
Size Compare
Dimensions

Height: 158.1 mm
Width: 73.8 mm
Thickness: 8.5 mm

Height: 154.4 mm
Width: 74.7 mm
Thickness: 7.3 mm

Height: 164.36 mm
Width: 74.75 mm
Thickness: 7.75 mm

Weight

189 grams

156.2 grams

188 grams

Build Material

Case: Aluminium
Back: Gorilla Glass

Back: Mineral Glass

Colours

Midnight Black, Coral Blue, Lilac Purple, Burgundy Red, Polaris Blue

Black

Velvet Red, Silk Blue

Waterproof

, Water resistant (up to 30 minutes in a depth of 1.5 meter), IP68

, Splash proof, IP64

Ruggedness

Dust proof

Dust proof

Camera
Main Camera
Camera Setup

Dual

Dual

Dual

Resolution

12 MP f/1.5, Wide Angle, Primary Camera(26 mm focal length, 2.55" sensor size, 1.4µm pixel size)12 MP f/2.4, Telephoto Camera(52 mm focal length, 3.6" sensor size, 1µm pixel size)

12 MP f/1.8, Primary Camera(2.55" sensor size, 1.4µm pixel size)5 MP f/2.4, Depth Camera

50 MP f/1.79, Wide Angle (79° field-of-view), Primary Camera(1.95" sensor size, 0.8µm pixel size)8 MP f/2.2, Ultra-Wide Angle Camera(4.0" sensor size, 1.12µm pixel size)

Sensor

S5K2L3, CMOS image sensor, ISOCELL Plus

S5K2L9, ISO-CELL

IMX882, CMOS image sensor, Exmor-RS CMOS Sensor

Autofocus

, Phase Detection autofocus, Dual Pixel autofocus

OIS

Flash

, LED Flash

, LED Flash

, Smart Aura Light

Image Resolution

4000 x 3000 Pixels

4000 x 3000 Pixels

8150 x 6150 Pixels

Settings

Exposure compensation

Exposure compensation, ISO control

Exposure compensation

Shooting Modes

Continuous Shooting
High Dynamic Range mode (HDR)

Continuous Shooting
High Dynamic Range mode (HDR)

Continuous Shooting
High Dynamic Range mode (HDR)
SuperMoon

Camera Features

Auto Flash
Face detection
Simultaneous HD video and image recording
Touch to focus

Digital Zoom
Auto Flash
Face detection
Touch to focus

Digital Zoom
Auto Flash
Face detection
Touch to focus

Video Recording

3840x2160 @ 60 fps
1920x1080 @ 60 fps
1280x720 @ 30 fps

3840x2160 @ 30 fps

3840x2160 @ 30 fps
1920x1080 @ 30 fps
1280x720 fps

Video Recording Features

Dual Video Recording

Front Camera
Very Good
Very Good
Very Good
Camera Setup

Single

Single

Single

Resolution

8 MP f/1.7, Wide Angle, Primary Camera(25 mm focal length, 3.6" sensor size, 1.22µm pixel size)

12 MP f/2.0, Primary Camera

50 MP f/2.45, Wide Angle, Primary Camera(25 mm focal length)

Sensor

CMOS

Autofocus

Flash

, Screen flash

Camera Features

Wide Angle Selfie

Video Recording

3840x2160 @ 30 fps
1920x1080 @ 30 fps

Battery
Good
Average
Very Good
Capacity

3500 mAh

3200 mAh

5500 mAh

Type

Li-ion

Li-ion

Removable

No

No

No

TalkTime

Up to 25 Hours(3G)

Wireless Charging

Quick Charging

, Fast

, Fast

, Fast, 44W

USB Type-C

No

Storage
Best in Class
Best in Class
Best in Class
Internal Memory

64 GB

128 GB

128 GB

Expandable Memory

, Up to 400 GB

, Up to 256 GB

, Up to 1 TB

User Available Storage

Up to 56 GB

Up to 107 GB

USB OTG

Network & Connectivity
SIM Slot(s)

Dual SIM, GSM+GSM, Dual VoLTE

Dual SIM, GSM+GSM

Dual SIM, GSM+GSM

SIM Size

SIM1: Nano
SIM2: Nano (Hybrid)

SIM1: Nano
SIM2: Nano (Hybrid)

SIM1: Nano
SIM2: Nano (Hybrid)

Network Support

5G Not Supported in India, 4G Supported in India, 3G, 2G

5G Not Supported in India, 4G Supported in India, 3G, 2G

5G Supported in India, 4G Supported in India, 3G, 2G

VoLTE

SIM 1

4G Bands:
TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 1900(band 39)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 850(band 5) / 700(band 13) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 1900(band 25) / 850(band 26)
3G Bands:
UMTS 1900 / 2100 / 850 / 900 MHz
2G Bands:
GSM 1800 / 1900 / 850 / 900 MHz
4G Speed:
200 Mbit/s ↑ 1200 Mbit/s ↓ (LTE category 18)
3G Speed:
HSDPA 42.2 Mbit/s ↓, HSUPA 5.76 Mbit/s ↑
GPRS:
Available
EDGE:
Available
Read More..

4G Bands:
TD-LTE 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 850(band 5)
3G Bands:
UMTS 1900 / 2100 / 850 / 900 MHz
2G Bands:
GSM 1800 / 1900 / 850 / 900 MHz
GPRS:
Available
EDGE:
Available
Read More..

5G Bands:
FDD N1 / N3 / N5 / N8 / N28
TDD N40 / N77 / N78
4G Bands:
TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5)
3G Bands:
UMTS 2100 / 850 / 900 MHz
2G Bands:
GSM 1800 / 850 / 900 MHz
GPRS:
Available
EDGE:
Available
Read More..

SIM 2

4G Bands:
TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 1900(band 39)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 850(band 5) / 700(band 13) / 700(band 17) / 850(band 18) / 850(band 19) / 800(band 20) / 1900(band 25) / 850(band 26)
3G Bands:
UMTS 1900 / 2100 / 850 / 900 MHz
2G Bands:
GSM 1800 / 1900 / 850 / 900 MHz
4G Speed:
200 Mbit/s ↑ 1200 Mbit/s ↓ (LTE category 18)
3G Speed:
HSDPA 42.2 Mbit/s ↓
GPRS:
Available
EDGE:
Available
Read More..

4G Bands:
TD-LTE 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 850(band 5)
3G Bands:
UMTS 1900 / 2100 / 850 / 900 MHz
2G Bands:
GSM 1800 / 1900 / 850 / 900 MHz
GPRS:
Available
EDGE:
Available
Read More..

5G Bands:
FDD N1 / N3 / N5 / N8 / N28
TDD N40 / N77 / N78
4G Bands:
TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 900(band 8) / 700(band 28) / 850(band 5)
3G Bands:
UMTS 2100 / 850 / 900 MHz
2G Bands:
GSM 1800 / 850 / 900 MHz
GPRS:
Available
EDGE:
Available
Read More..

SAR Value

Head: 1.180 W/kg, Body: 0.573 W/kg

Wi-Fi

, Wi-Fi 5 (802.11 a/b/g/n/ac) 5GHz, MIMO

, Wi-Fi 5 (802.11 a/b/g/n/ac) 5GHz

, Wi-Fi 5 (802.11 a/b/g/n/ac) 5GHz

Wi-Fi Features

Wi-Fi Direct, Mobile Hotspot

Mobile Hotspot

Mobile Hotspot

Bluetooth

, v5.0

, v5.0

, v5.1

GPS

with A-GPS, Glonass

with A-GPS, Glonass

with Glonass

NFC

No

USB Connectivity

Mass storage device, USB charging

Mass storage device, USB charging, microUSB 2.0

USB 2.0, Mass storage device, USB charging

Multimedia
FM Radio

No

No

Loudspeaker

Audio Jack

3.5 mm

3.5 mm

USB Type-C

Audio Features

Dolby Atmos

Sensors
Fingerprint Sensor

Fingerprint Sensor Position

Rear

On-screen

On-screen

Fingerprint Sensor Type

Optical

Optical

IRIS Scanner

Other Sensors

Light sensor, Proximity sensor, rgbw sensor, Accelerometer, Barometer, Compass, Gyroscope

Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Stylus

Applications

Facebook, WhatsApp, LINE, Google Duo, Gmail, Amazon, Lazada, Flipkart, Maps, Newspoint, WPS Office, UC Browser

Price list

Rs. 26,290
Buy Now
Not Available
Not Available

Not Available
Rs. 19,790
Buy Now
Not Available

Not Available
Not Available
Rs. 27,999
Buy Now