88points

Samsung Galaxy S21

85points

Samsung Galaxy S9 Plus

vs
vs

151 facts in comparison

Samsung Galaxy S21 vs Samsung Galaxy S9 Plus

Samsung Galaxy S21
Samsung Galaxy S9 Plus

Why is Samsung Galaxy S21 better than Samsung Galaxy S9 Plus?

  • 14.29% more battery power
    ?

    4000mAhvs3500mAh
  • 2GB more RAM memory
    ?

    8GBvs6GB
  • 14.2% faster CPU speed
    ?

    1 x 2.9GHz & 3 x 2.8GHz & 4 x 2.2GHzvs4 x 2.7 & 4 x 1.7GHz
  • 3.67x more megapixels (main camera)
    ?

    64MP & 12MP & 12MPvs12 & 12MP
  • 25% more megapixels (front camera)
    ?

    10MPvs8MP
  • 2.5x faster downloads
    ?

    3000MBits/svs1200MBits/s
  • Has a dual-tone LED flash
    ?
  • 0.1 newer Bluetooth version
    ?

    5.1vs5

Why is Samsung Galaxy S9 Plus better than Samsung Galaxy S21?

  • 25.65% higher pixel density
    ?

    529ppivs421ppi
  • 1.64x higher resolution
    ?

    1440 x 2960pxvs1080 x 2400px
  • Has an external memory slot
    ?
  • 33.33% better video recording quality (main camera)
    ?

    2160 x 60fpsvs3240 x 30fps
  • Has a socket for a 3.5 mm audio jack
    ?
  • Has a radio
    ?
  • Is DLNA-certified
    ?
  • Has a heart rate monitor
    ?

Price comparison

Samsung Galaxy S21

ProductStorePrice
Samsung Galaxy S21 AmazonSamsung Galaxy S20 Ultra, 128GB, Cosmic ...Samsung Galaxy S20 Ultra, 128GB, Cosmic Gray - Fully Unlocked (Renewed)
Amazon logo
$729.99
Samsung Galaxy S21 AmazonSamsung Galaxy S20 5G, 128GB, Cosmic Gra...Samsung Galaxy S20 5G, 128GB, Cosmic Gray - Unlocked (Renewed)
Amazon logo
$489.00

Samsung Galaxy S9 Plus

Buy used:

$104.99

ProductStorePrice
Samsung Galaxy S9 Plus AmazonSamsung Galaxy S20 5G, 128GB, Cosmic Gra...Samsung Galaxy S20 5G, 128GB, Cosmic Gray - Unlocked (Renewed)
Amazon logo
$539.99
Samsung Galaxy S9 Plus AmazonSamsung Galaxy S8, 5.8" 64GB (Verizon Wi...Samsung Galaxy S8, 5.8" 64GB (Verizon Wireless) - Midnight Black (Renewed)
Amazon logo
$180.00
Samsung Galaxy S9 Plus dealextreme10W Qi Wireless Charger Car Air Vent Mou...10W Qi Wireless Charger Car Air Vent Mount Magnetic Phone Stand For Samsung For iPhone XR Samsung S9 S8 Note 9
dealextreme logo
$28.99
Samsung Galaxy S9 Plus dealextremeWireless Charger For iPhone 11 Pro 8 X S...Wireless Charger For iPhone 11 Pro 8 X Samsung S10 Fast Wireless Charger Stand For iWatch 5 4 For Samsung Watch For Galaxy Buds
dealextreme logo
$41.49
Samsung Galaxy S9 Plus dealextremeBASEUS 2-in-1 Wireless Charger 15W Qi Ch...BASEUS 2-in-1 Wireless Charger 15W Qi Charging Stand Pad For Airpods IPhone Huawei Samsung Galaxy And More
dealextreme logo
$30.49

User reviews

Overall Rating

Samsung Galaxy S21
10.0
3 User reviews
Samsung Galaxy S21
10.0/10
3 User reviews
Samsung Galaxy S9 Plus
8.8
8 User reviews
Samsung Galaxy S9 Plus
8.8/10
8 User reviews

Features

Build quality

10.0/10
3 votes
8.9/10
8 votes

Display quality

10.0/10
3 votes
9.9/10
8 votes

Battery life

9.3/10
3 votes
7.4/10
8 votes

Photography

9.7/10
3 votes
9.1/10
8 votes

Performance

10.0/10
3 votes
9.6/10
8 votes

Comments

Саид

Саид

2 months ago

10 / 10

Просто пушка

Саид

Саид

2 months ago

10 / 10

0 users found this helpful
Isaac

Isaac

1 month ago

10 / 10

un celular super completo.

Isaac

Isaac

1 month ago

10 / 10

0 users found this helpful
Fabio

Fabio

1 month ago

10 / 10

Não justifica pagar 3x por um iPhone,se é inferior

Fabio

Fabio

1 month ago

10 / 10

Não justifica pagar 3x mais por um iPhone12, se tecnicamente é inferior ao GalaxyS21. A não ser para mostrar um padrão social. O marketing da Apple é muito forte, se transforma em "desejo", mas tecnicamente os números mostram que o S21 é um excelente aparelho, com câmeras muito superiores, bateria e processadores superiores e na medida certa. São 2 aparelhos muito bons. Quer comprar o melhor, use a razão e compre o GalaxyS21. Quer mostrar um "padrão social", use a emoção, gaste 3x mais e compre um iPhone.

0 users found this helpful

Design

1.is dustproof and water-resistant
Samsung Galaxy S21
Samsung Galaxy S9 Plus
The device is dustproof and water-resistant. Water-resistant devices can resist the penetration of water, such as powerful water jets, but not being submerged into water.
2.weather-sealed (splashproof)
Samsung Galaxy S21
Samsung Galaxy S9 Plus
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
3.weight

171g

189g

We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
4.thickness

7.9mm

8.5mm

We consider a thinner chassis better because it makes the product more compact and portable. Thinness is a feature highlighted by many manufacturers of mobile devices, but it is essential for a wide range of products.
5.width

71.2mm

73.8mm

The width represents the horizontal dimension of the product. We consider a smaller width better because it assures easy maneuverability.
6.height

151.7mm

158.1mm

The height represents the vertical dimension of the product. We consider a smaller height better because it assures easy maneuverability.
The waterproof depth rating indicates how well the device is protected against water ingress and water pressure. Devices which can withstand more water pressure are better for swimming or diving.
8.volume

85.33cm³

99.18cm³

Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.
9.has a physical QWERTY keyboard
Samsung Galaxy S21
Samsung Galaxy S9 Plus
Text messaging is much faster due to a hardware keyboard.

Display

1.pixel density

421ppi

529ppi

Pixel density is a measurement of a screen's resolution, expressed as the number of pixels per inch (PPI) on the screen. A higher pixel density translates into more clarity and sharpness for the images rendered on the screen, thus improving the quality of the viewing experience.
2.resolution

1080 x 2400px

1440 x 2960px

Resolution is an essential indicator of a screen's image quality, representing the maximum amount of pixels that can be shown on the screen. The resolution is given as a compound value, comprised of horizontal and vertical pixels.
The bigger the screen size is, the better the user experience.
4.has branded damage-resistant glass
Samsung Galaxy S21
Samsung Galaxy S9 Plus
Damage-resistant glass (such as Corning Gorilla Glass or Asahi Dragontrail Glass) is thin, lightweight, and can withstand high levels of force.
5.has an IPS screen
Samsung Galaxy S21
Samsung Galaxy S9 Plus
IPS (In-Plane Switching) is a technology used for LCDs. It was designed to overcome the main limitations of conventional twisted nematic TFT displays: limited viewing angles and low-quality color reproduction. PLS (Plane-to-Line Switching) is a type of IPS screen developed by Samsung, with increased brightness and lower production costs.
6.Has an OLED or AMOLED display
Samsung Galaxy S21
Samsung Galaxy S9 Plus
OLED (Organic Light-Emitting Diode) displays are formed of organic materials that emit light. They have higher contrast ratios and wider viewing angles compared to LCDs. AMOLED and POLED are types of OLED displays.
7.has a touch screen
Samsung Galaxy S21
Samsung Galaxy S9 Plus
You can operate the device easily, by pressing the screen with your fingers.
8.has an HDR10-enabled display
Samsung Galaxy S21
Samsung Galaxy S9 Plus
The display supports HDR10, which is an HDR (high dynamic range) video technology. Compared to standard dynamic range (SDR) video, HDR10 video has greater contrast and color depth, resulting in more realistic images.
9.Always-On Display
Samsung Galaxy S21
Samsung Galaxy S9 Plus
The user can see information such as date, time, and notifications even when the screen is off. The functionality can be enabled or disabled.

Performance

1.RAM

8GB

6GB

Random-access memory (RAM) is a form of volatile memory used to store working data and machine code currently in use. It is a quick-access, temporary virtual storage that can be read and changed in any order, thus enabling fast data processing.
2.CPU speed

1 x 2.9GHz & 3 x 2.8GHz & 4 x 2.2GHz (Samsung Exynos 2100)

4 x 2.7GHz & 4 x 1.7GHz

The CPU speed indicates how many processing cycles per second can be executed by a CPU, considering all of its cores (processing units). It is calculated by adding the clock rates of each core or, in the case of multi-core processors employing different microarchitectures, of each group of cores.
3.has an external memory slot
Samsung Galaxy S21
Samsung Galaxy S9 Plus
The device has a standard memory slot (such as an SD or micro SD card slot) that enables you to extend the built-in internal storage with affordable memory modules, or easily retrieve data, such as photographs, from the memory card.
The internal storage refers to the built-in storage space available in a device for system data, apps, and user-generated data. With a large amount of internal storage, you can save more files and apps on your device.
5.Has integrated LTE
Samsung Galaxy S21 (Samsung Exynos 2100)
Samsung Galaxy S9 Plus (Samsung Exynos 9810)
The system on a chip (SoC) has an integrated LTE cellular chip. LTE is capable of downloading at faster speeds than older, 3G technology.
Small semiconductors provide better performance and reduced power consumption. Chipsets with a higher number of transistors, semiconductor components of electronic devices, offer more computational power. A small form factor allows more transistors to fit on a chip, therefore increasing its performance.
It can support faster memory, which will give quicker system performance.
8.Supports 64-bit
Samsung Galaxy S21 (Samsung Exynos 2100)
Samsung Galaxy S9 Plus (Samsung Exynos 9810)
A 32-bit operating system can only support up to 4GB of RAM. 64-bit allows more than 4GB, giving increased performance. It also allows you to run 64-bit apps.
9.Has integrated graphics
Samsung Galaxy S21 (Samsung Exynos 2100)
Samsung Galaxy S9 Plus (Samsung Exynos 9810)
With integrated graphics you don’t need to buy a separate graphics card.

Cameras

1.megapixels (main camera)

64MP & 12MP & 12MP

12MP & 12MP

The number of megapixels determines the resolution of the images captured with the main camera. A higher megapixel count means that the camera is capable of capturing more details. However, the megapixel count is not the only important element determining the quality of an image.
The number of megapixels determines the resolution of the images captured with the front camera. A higher megapixel count means that the front camera is capable of capturing more details, an essential factor for taking high-resolution selfies.
3.has built-in optical image stabilization
Samsung Galaxy S21
Samsung Galaxy S9 Plus
Optical image stabilization uses gyroscopic sensors to detect the vibrations of the camera. The lens adjusts the optical path accordingly, ensuring that any type of motion blur is corrected before the sensor captures the image.
4.video recording (main camera)

3240 x 30fps

2160 x 60fps

The maximum resolution available for videos shot with the main camera. Although it may be possible to choose among other frame rates, those recordings usually have lower resolutions.
5.Has a dual-tone LED flash
Samsung Galaxy S21
Samsung Galaxy S9 Plus
A dual-tone flash has LED lights with different color temperatures, delivering a better color balance to photos and videos.
6.has a BSI sensor
Samsung Galaxy S21
Samsung Galaxy S9 Plus
A BSI (backside illuminated) sensor is a camera image sensor which captures better quality images in poor lighting conditions, and offers better overall sharpness and image quality.
7.has continuous autofocus when recording movies
Samsung Galaxy S21
Samsung Galaxy S9 Plus
When recording movies they stay focussed and sharp.
8.Has phase-detection autofocus for photos
Samsung Galaxy S21
Samsung Galaxy S9 Plus
Phase-detection autofocus is much faster than a contrast detection autofocus, allowing for sharper images.
9.supports slow-motion video recording
Samsung Galaxy S21
Samsung Galaxy S9 Plus
Slow-motion is an artistic video effect that makes time seem to go slower. It is achieved by recording a video at a higher frame-rate than the standard playback rate of 24fps or 30fps. Depending on camera capabilities, frame rates for slow-motion videos vary between 60fps and 960fps.

Audio

1.has stereo speakers
Samsung Galaxy S21
Samsung Galaxy S9 Plus
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
2.has a socket for a 3.5 mm audio jack
Samsung Galaxy S21
Samsung Galaxy S9 Plus
With a standard mini jack socket, you can use the device with most headphones.
3.Has a radio
Samsung Galaxy S21
Samsung Galaxy S9 Plus
A built-in FM radio tuner allows you to listen to most of the live-broadcasted FM radio stations without using the internet.
More microphones result in better sound quality and enable the device to filter out background noise.
5.Has dedicated media keys
Samsung Galaxy S21
Samsung Galaxy S9 Plus
Phones with physical keyboards have dedicated media keys, such as: play, stop, next, previous, volume up/down, etc.

Battery

1.battery power

4000mAh

3500mAh

Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.
2.has wireless charging
Samsung Galaxy S21
Samsung Galaxy S9 Plus
It supports a wireless charging standard such as Qi. To charge the device, you simply put it down on a compatible charging pad.
3.Supports fast charging
Samsung Galaxy S21
Samsung Galaxy S9 Plus
Fast charging technologies, like Qualcomm’s Quick Charge or MediaTek’s Pump Express, are used to reduce the time it takes to charge a device. For example, with Quick Charge 3.0, the battery can be charged to 50% in just 30 minutes.
4.has a removable battery
Samsung Galaxy S21
Samsung Galaxy S9 Plus
The battery is removable and can be replaced by the user if broken.
5.Has an ultra power-saving mode
Samsung Galaxy S21 (Android 11)
Samsung Galaxy S9 Plus (Android 8.0 Oreo)
The ultra power-saving mode, also called low power mode, is an effective way to extend the battery life of the device. Usually, it involves limiting screen brightness and contrast, disabling location services, restricting connectivity, and turning off nonessential apps.
6.has a battery level indicator
Samsung Galaxy S21
Samsung Galaxy S9 Plus
An indicator shows you when the device has low battery.
7.has a rechargeable battery
Samsung Galaxy S21
Samsung Galaxy S9 Plus
The battery can be recharged and used over again.
8.has reverse wireless charging
Samsung Galaxy S21
Samsung Galaxy S9 Plus
The device can be used as a wireless charging station to power other gadgets.

Features

The download speed is a measurement of the internet connection bandwidth, representing the maximum data transfer rate at which a device can access online content.
2.has NFC
Samsung Galaxy S21
Samsung Galaxy S9 Plus
NFC (near-field communication) allows a device to perform simple wireless transactions, such as mobile payments. Note: this feature may not be available in all markets.
3.supports Wi-Fi 5 (802.11ac)
Samsung Galaxy S21
Samsung Galaxy S9 Plus
802.11ac wireless works on the 5GHz frequency range. It offers higher transfer rates, improved reliability, and improved power consumption. It provides advantages for gaming and HD video streaming.
4.Has a fingerprint scanner
Samsung Galaxy S21
Samsung Galaxy S9 Plus
The device has a fingerprint scanner which identifies the user.
5.is DLNA-certified
Samsung Galaxy S21
Samsung Galaxy S9 Plus
All DLNA-certified products are compatible with one another. When different devices are connected to the same network, data can be transferred easily between them.
Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Newer versions provide faster data transfers.
7.supports two physical SIM cards
Samsung Galaxy S21
Samsung Galaxy S9 Plus
A dual-SIM mobile phone can work with two SIM cards at the same time.
8.has 5G support
Samsung Galaxy S21
Samsung Galaxy S9 Plus (Samsung Exynos 9810)
The fifth-generation wireless technology delivers higher speeds and lower latency than the previous, fourth-generation tech.
The upload speed is a measurement of the internet connection bandwidth, representing the maximum data transfer rate at which a device can send information to a server or another device.

Price comparison

Samsung Galaxy S21

ProductStorePrice
Samsung Galaxy S21 AmazonSamsung Galaxy S20 Ultra, 128GB, Cosmic ...Samsung Galaxy S20 Ultra, 128GB, Cosmic Gray - Fully Unlocked (Renewed)
Amazon logo
$729.99
Samsung Galaxy S21 AmazonSamsung Galaxy S20 5G, 128GB, Cosmic Gra...Samsung Galaxy S20 5G, 128GB, Cosmic Gray - Unlocked (Renewed)
Amazon logo
$489.00

Samsung Galaxy S9 Plus

Buy used:

$104.99

ProductStorePrice
Samsung Galaxy S9 Plus AmazonSamsung Galaxy S20 5G, 128GB, Cosmic Gra...Samsung Galaxy S20 5G, 128GB, Cosmic Gray - Unlocked (Renewed)
Amazon logo
$539.99
Samsung Galaxy S9 Plus AmazonSamsung Galaxy S8, 5.8" 64GB (Verizon Wi...Samsung Galaxy S8, 5.8" 64GB (Verizon Wireless) - Midnight Black (Renewed)
Amazon logo
$180.00
Samsung Galaxy S9 Plus dealextreme10W Qi Wireless Charger Car Air Vent Mou...10W Qi Wireless Charger Car Air Vent Mount Magnetic Phone Stand For Samsung For iPhone XR Samsung S9 S8 Note 9
dealextreme logo
$28.99
Samsung Galaxy S9 Plus dealextremeWireless Charger For iPhone 11 Pro 8 X S...Wireless Charger For iPhone 11 Pro 8 X Samsung S10 Fast Wireless Charger Stand For iWatch 5 4 For Samsung Watch For Galaxy Buds
dealextreme logo
$41.49
Samsung Galaxy S9 Plus dealextremeBASEUS 2-in-1 Wireless Charger 15W Qi Ch...BASEUS 2-in-1 Wireless Charger 15W Qi Charging Stand Pad For Airpods IPhone Huawei Samsung Galaxy And More
dealextreme logo
$30.49

Which are the best smartphones?

Show all
This page is currently only available in English.