Samsung Galaxy S21 5G vs Samsung Galaxy S24: Comparison

Comparison of features, performance, design, battery, camera and connectivity between the following smartphones: Samsung Galaxy S21 5G vs Samsung Galaxy S24. The complete information of specifications to decide which to buy.

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Technical data sheets

Basics

Samsung Galaxy S21 5G
Samsung Galaxy S21 5G
Global · 8GB · 128GB · SM-G991B
View datasheet
vs
Samsung Galaxy S24
Samsung Galaxy S24
Global · 8GB · 128GB · SM-S921B
View datasheet
vs

Score

Ki Cost-effective
Score
8.5 Ki Cost-effective
Score
9.0 Ki Cost-effective
Score
Design and Screen score 7.7Design & Materials 8.7Design & Materials
Performance and Hardware score 7.4Performance & Hardware 8.5Performance & Hardware
Camera score 8.0Camera 8.4Camera
Connectivity score 8.5 Connectivity 8.7 Connectivity
Battery score 5.5 Battery 5.5 Battery

User reviews

User score
8.6
62 reviews
9.8
9 reviews

Technical specifications of the Samsung Galaxy S21 5G vs Samsung Galaxy S24

Specs stores to buy Samsung Galaxy S21 5G Samsung Galaxy S21 5G
Global · 8GB · 128GB · SM-G991B
Samsung Galaxy S24 prices Samsung Galaxy S24
Global · 8GB · 128GB · SM-S921B
Inches 6.2" 6.2"
Resolution FHD+ FHD+
Usable surface 88% useful 90% useful
Aspect Ratio 20:9 19.5:9
Dimensions 71.2 mm
151.7 mm
7.9 mm
70.6 mm
147.0 mm
7.6 mm
Weight 169 g 167 g
Micro Exynos 2100
Octa-Core
Exynos 2400
Deca-Core
RAM 8 GB RAM 8 GB RAM
Storage 128 GB 128 GB
AnTuTu 749.100
v10
1.639.695
v10
Battery 4000 mAh 4000 mAh
Main Camera 1
12 Mpx · ƒ/1.8
IMX555
2 3
1
50 Mpx · ƒ/1.8
GN3
2 3
Selfie Camera SELF 10 Mpx · ƒ/2.2 SELF 12 Mpx · ƒ/2.2
Bands
OS Android 14 Upside-down cake Android 14 Upside-down cake


About this comparison

Samsung Galaxy S21 5G vs Samsung Galaxy S24: A Comparison of Two High-End Smartphones

In the ever-evolving world of smartphones, Samsung has always been at the forefront, consistently providing users with cutting-edge technology and innovative features. With the release of the Samsung Galaxy S21 5G in January 2021 and the Samsung Galaxy S24 in January 2024, the brand continues to impress with its high-end offerings. Let's delve into the details of these two smartphones and compare their design, hardware, camera capabilities, connectivity, and battery life.

Design & Materials:

Starting with the design and materials, both the Samsung Galaxy S21 5G and the Samsung Galaxy S24 offer a sleek and modern aesthetic. The Samsung Galaxy S21 5G features a 6.2-inch AMOLED display with a resolution of 1080x2400 (FHD+). It boasts a refresh rate of 120 Hz, which ensures smooth scrolling and enhanced user experience. The peak brightness of 1300 cd/m² allows for excellent visibility even in bright sunlight. The phone is protected by Corning Gorilla Glass Victus, which provides durability against accidental drops.

On the other hand, the Samsung Galaxy S24 takes the display quality to the next level with a 6.2-inch AMOLED screen boasting a resolution of 1080x2340 (FHD+). It offers an impressive peak brightness of 2600 cd/m², ensuring crystal-clear visibility in any lighting condition. The Corning Gorilla Glass Victus 2 protection adds an extra layer of security against scratches and cracks.

In terms of materials, both smartphones feature a combination of aluminium and glass. However, the Samsung Galaxy S24 goes a step further by incorporating Corning Gorilla Glass Armor, further enhancing its durability. Additionally, the Samsung Galaxy S24 offers a larger usable surface of 90.5%, providing users with more screen real estate for their activities.

Hardware:

When it comes to hardware performance, the Samsung Galaxy S21 5G is powered by a Samsung Exynos 2100 (5nm) processor, ensuring fast and efficient performance. It is equipped with 8GB of RAM (LPDDR5), allowing for smooth multitasking and lag-free operation. Users can choose between 128GB and 256GB of storage (UFS Storage 3.1), providing ample space for apps, photos, and videos. The phone scores an impressive 749100 on AnTuTu benchmark, showcasing its powerful capabilities. Additionally, the fingerprint display adds an extra layer of security for users.

On the other hand, the Samsung Galaxy S24 takes the hardware performance up a notch with the Samsung Exynos 2400 (4nm) processor. This upgraded chipset offers faster processing speeds and improved power efficiency. The phone is equipped with 8GB of RAM (LPDDR5X), delivering seamless multitasking and enhanced overall performance. Users can choose between 128GB and 256GB of storage (UFS Storage 4.0), providing ample space for all their digital content. With a staggering AnTuTu benchmark score of 1639695, the Samsung Galaxy S24 proves to be a powerhouse in terms of performance. Moreover, the smartphone features ultrasonic fingerprint display technology, further enhancing data security.

Camera:

Photography enthusiasts will be delighted with the camera capabilities of both the Samsung Galaxy S21 5G and the Samsung Galaxy S24. The Samsung Galaxy S21 5G features a triple camera setup, including a 12.0Mpx standard camera (Sony IMX555) with an f/1.8 aperture, a 12.2Mpx wide-angle + macro camera (Sony IMX563) with an f/2.2 aperture, and a 64.0Mpx telephoto + portrait camera (Samsung Bright S5KGW2) with an f/2.0 aperture. These cameras are equipped with advanced features such as optical stabilization (OIS), allowing for crisp and clear photos even in challenging lighting conditions. The phone also supports 4K and 8K video recording, ensuring that users can capture their memories with exceptional detail. Additionally, the ultra-wide-angle lens (120º) and the dual pixel autofocus further enhance the photography experience.

The Samsung Galaxy S24 boasts a similarly impressive camera setup, featuring a 50.0Mpx standard camera (Samsung GN5) with an f/1.8 aperture, a 12.2Mpx wide-angle lens with an f/2.2 aperture, and a 10.0Mpx telephoto lens with an f/2.4 aperture. The phone also offers a 12.0Mpx selfie camera (CMOS) with an f/2.2 aperture for high-quality self-portraits. The optical stabilization (OIS) feature ensures shake-free photos and videos, while the ability to record 4K and 8K videos allows for stunning visual content creation. Additionally, the Samsung Galaxy S24 incorporates optical zoom capabilities, enabling users to capture distant subjects with precision. The digital zoom functionality provides flexibility by allowing up to 30x zoom.

Connectivity:

Both smartphones offer various connectivity options to ensure seamless integration with other devices and networks. Bluetooth 5.0 allows for fast and stable wireless connections, making it easy to connect to wireless headphones, speakers, and other accessories. Dual SIM support enables users to stay connected on multiple networks or have separate personal and work lines. NFC capabilities enable convenient contactless payments and data exchange. WiFi 6 (802.11ax) provides faster and more reliable internet connections for streaming, browsing, and downloading. GPS (L1+L5) ensures accurate positioning for navigation and location-based services.

In addition to the aforementioned features, the Samsung Galaxy S24 sets itself apart by introducing eSIM support. This allows users to activate cellular service without the need for a physical SIM card, offering more flexibility and convenience.

Battery:

Both smartphones are equipped with a 4000mAh battery capacity, ensuring sufficient power to last through a day of heavy usage. The fast-charging technology enables users to quickly recharge their devices, with a 25.0W charging speed. Wireless charging capabilities provide added convenience, allowing users to simply place their smartphones on a compatible charging pad without the need for any cables. Reverse charging functionality allows the smartphones to act as power banks, enabling users to share their battery life with other compatible devices.

Conclusion:

In conclusion, both the Samsung Galaxy S21 5G and the Samsung Galaxy S24 offer exceptional features and performance, making them top contenders in the high-end smartphone market. The Samsung Galaxy S21 5G, released in January 2021, impresses with its powerful Exynos 2100 processor, advanced camera capabilities, and sleek design. On the other hand, the Samsung Galaxy S24, released in January 2024, takes things up a notch with the upgraded Exynos 2400 processor, improved camera system, and enhanced durability. With these flagship smartphones, Samsung continues to push the boundaries of innovation, providing users with an outstanding mobile experience.

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Brand

Brand Samsung Samsung
Aliases SM-G991B SM-S921B

Release Date

Release date January 2021,
3 years ago
January 2024,
3 months ago
State On Sale On Sale
Market Global Global

Design & Materials

Structure

Samsung Galaxy S21 5G
Samsung Galaxy S24
Samsung Galaxy S21 5G
Samsung Galaxy S24
Size
71.2 mm 151.7 mm 7.9 mm
Print 3D Model
70.6 mm 147.0 mm 7.6 mm
Print 3D Model
Weight 169 g 167 g
Usable surface 88 % 90 %
Materials Plastic, Aluminium Glass, Aluminium, Corning Gorilla Glass Armor
Resistance IP68 IP68
Colors
White

Pink

Gray

Violet
Black

Yellow

Gray

Purple

Green

Orange

Cyan

Screen

Diagonal 6.2" 6.2"
Type AMOLED Dynamic Amoled 2X AMOLED
Aspect Ratio 20:9 19.5:9
Resolution FHD+
1080 x 2400 px
FHD+
1080 x 2340 px
Density 424 Pixels per inch 416 Pixels per inch

Others

Others
  • Hole-punch Notch
  • Refresh rate 120 Hz
  • Peak brightness - 1300 cd/m²
  • Always-On Display
  • HDR10+
  • Scratch resistant
  • Corning Gorilla Glass Victus
  • Capacitive
  • Multi-touch
  • Frameless
  • Hole-punch Notch
  • 1-120 Hz refresh rate
  • Refresh rate 120 Hz
  • Variable Refresh Rate (VRR)
  • Peak brightness - 2600 cd/m²
  • Always-On Display
  • HDR10+
  • DCI-P3
  • DC dimming
  • Scratch resistant
  • Corning Gorilla Glass Victus 2
  • Capacitive
  • Multi-touch
  • Frameless
  • LTPO (Low Temperature PolySilicon oxide)

User reviews

Is it a drop-resistant and scratch-resistant smartphone?
8.2
9.7
Do you think it's a nice phone?
9.4
10
Is it comfortable?
9.5
9.9
Can you see it well in the sunlight?
9.0
9.7
Number of reviews
62 reviews
9 reviews

Performance & Hardware

Processor

Model Samsung Exynos 2100 Samsung Exynos 2400
CPU 1x Cortex-X1 2,91 GHz + 3x Cortex-A78 2,81 GHz + 4x Cortex-A55 2,21 GHz. 1x3.21GHz ARM Cortex-X4 +2x2.9GHz ARM Cortex-A720 +3x2.59GHz ARM Cortex-A720+4x1.96GHz ARM Cortex-A520
Type Octa-Core Deca-Core
Manufacturing 5 nm 4 nm
64 Bits Yes Yes

Graphics

GPU ARM Mali-G78 MC14 Xclipse 940

RAM

RAM 8 GB 8 GB
Type RAM LPDDR5 RAM LPDDR5X

Antutu

Score
749.100
Antutu v10
Overall performance better than 85% of devices
1.639.695
Antutu v10
Overall performance better than 98% of devices

Storage

Capacity 128 GB 128 GB
Type UFS Storage 3.1 UFS Storage 3.1
SD Slot No No

Security

Fingerprint Yes, in screen Yes, in screen

Sensors

Sensors
  • Fingerprint
  • Proximity
  • Light sensor
  • Accelerometer
  • Compass
  • Gyroscope
  • Barometer
  • Hall
  • Geomagnetic
  • Proximity
  • Light sensor
  • Accelerometer
  • Compass
  • Gyroscope
  • Barometer
  • Hall
  • Geomagnetic
  • Utrasonic Fingerprint

Audio

Audio
  • Dolby Atmos
  • Noise cancellation microphone
  • Stereo Speakers
  • Noise cancellation microphone
  • Stereo Speakers

Others

Notifications LED -- --
Cooling system No No
Gaming buttons No No

User reviews

Does it have good sound?
8.9
9.9
Does it work smoothly in everyday use?
9.1
10
What's your experience been with demanding games?
8.2
9.9
Number of reviews
62 reviews
9 reviews

Camera

Main

No. of cameras Triple rear camera Triple rear camera
1
Camera type

Standard

Standard
Resolution 12 Mpx 50 Mpx
Sensor Sony IMX555 Samsung GN3
Type CMOS ISOCELL
Aperture ƒ/ 1.8 ƒ/ 1.8
ISO -- --
Pixel size 1.80 µm 1.00 µm
Pixel Binning -- 1-4 (2x2)
Sensor size 1/1.76" 1/1.57"
2
Camera type

Wide Angle + Macro

Wide Angle lens
Resolution
12.2 Mpx
12.2 Mpx
Sensor
Sony IMX563
Sony IMX564
Type
CMOS
CMOS
Aperture
ƒ/ 2.2
ƒ/ 2.2
Pixel size
1.40 µm
1.40 µm
Pixel Binning
--
--
Sensor size
1/2.55"
1/2.55"
3
Camera type

Telephoto + portrait

Telephoto lens
Resolution
64 Mpx
10 Mpx
Sensor
Samsung Bright S5KGW2
Samsung S5K3K1
Type
ISOCELL
ISOCELL
Aperture
ƒ/ 2.0
ƒ/ 2.4
Pixel size
0.80 µm
1.00 µm
Pixel Binning
--
--
Sensor size
1/1.72"
1/3.9"

Features

Flash LED LED
Optical Stabilisation Yes Yes
Slow Motion Video Yes,
960 fps
Yes,
240 fps
Others
  • 4K Video
  • 8K Video
  • Digital zoom
  • Optical zoom
  • Triple camera
  • Digital image stabilization
  • Optical Stabilization (OIS)
  • Autofocus
  • Touch focus
  • Continuous autofocus
  • Manual focus
  • Phase detection autofocus (PDAF)
  • Continuous shooting
  • Geotagging
  • Panorama
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer
  • RAW
  • Night Mode
  • Night Mode 2.0
  • 4K Video
  • 8K Video
  • Digital zoom
  • Optical zoom
  • Triple camera
  • Digital image stabilization
  • Optical Stabilization (OIS)
  • Autofocus
  • Touch focus
  • Phase detection autofocus (PDAF)
  • Continuous shooting
  • Geotagging
  • Panorama
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer
  • RAW

Selfie

SELF
Camera type

Dedicated

Dedicated
Resolution 10 Mpx 12 Mpx
Sensor Sony IMX374 Samsung S5K3LU
Type CMOS CMOS
Aperture ƒ/ 2.2 ƒ/ 2.2
Pixel size 1.22 µm --
Pixel Binning -- --
Sensor size 1/3.2" --
Others
--
--

DxOMark Score

DxOMark Score
111
Mobile
118
Photo
90
Video
132
Selfie
125
Photo
145
Video
--

User reviews

Quality of daytime photos
9.5
10
Quality of nighttime photos
8.6
9.7
Quality of selfies
8.9
9.7
Does it have a powerful flash?
9.0
9.7
Number of reviews
62 reviews
9 reviews

Connectivity

Network compatibility

5G
  • n1 (2100)
  • n3 (1800)
  • n5 (850)
  • n7 (2600)
  • n8 (900)
  • n20 (800)
  • n28b (700)
  • n28a (700)
  • n38 (2600)
  • n40 (2300)
  • n41 (2500)
  • n66 (1700)
  • n77 (3700)
  • n78 (3500)
  • n1 (2100)
  • n3 (1800)
  • n5 (850)
  • n7 (2600)
  • n8 (900)
  • n12 (700)
  • n20 (800)
  • n25 (1900)
  • n26 (850)
  • n28b (700)
  • n28a (700)
  • n38 (2600)
  • n40 (2300)
  • n41 (2500)
  • n66 (1700)
  • n75 (1500)
  • n77 (3700)
  • n78 (3500)
4G LTE
  • B1 (2100)
  • B2 (1900)
  • B3 (1800)
  • B4 (1700/2100 AWS 1)
  • B5 (850)
  • B7 (2600)
  • B8 (900)
  • B12 (700)
  • B13 (700)
  • B17 (700)
  • B18 (800)
  • B19 (800)
  • B20 (800)
  • B25 (1900+)
  • B26 (850)
  • B28b (700)
  • B28a (700)
  • B32 (1500)
  • B38 (TDD 2600)
  • B39 (TDD 1900)
  • B40 (TDD 2300)
  • B41 (TDD 2500)
  • B66 (1700/2100)
  • B1 (2100)
  • B2 (1900)
  • B3 (1800)
  • B4 (1700/2100 AWS 1)
  • B5 (850)
  • B7 (2600)
  • B8 (900)
  • B12 (700)
  • B13 (700)
  • B17 (700)
  • B18 (800)
  • B19 (800)
  • B20 (800)
  • B25 (1900+)
  • B26 (850)
  • B28b (700)
  • B28a (700)
  • B32 (1500)
  • B38 (TDD 2600)
  • B39 (TDD 1900)
  • B40 (TDD 2300)
  • B41 (TDD 2500)
  • B66 (1700/2100)
3G
  • B1 (2100)
  • B2 (1900)
  • B4 (1700/2100 AWS A-F)
  • B5 (850)
  • B8 (900)
  • B1 (2100)
  • B2 (1900)
  • B4 (1700/2100 AWS A-F)
  • B5 (850)
  • B8 (900)
2G
  • B2 (1900)
  • B3 (1800)
  • B5 (850)
  • B8 (900)
  • B2 (1900)
  • B3 (1800)
  • B5 (850)
  • B8 (900)

SIM card

Dual SIM Dual Sim Dual Standby Dual Sim Dual Standby
Type
  • Nano SIM
  • Nano SIM
  • Nano SIM / eSIM
  • Nano SIM / eSIM

Wi-Fi

Wi-Fi
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11n 5GHz
  • 802.11ac
  • WiFi 6 (802.11ax)
  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11n
  • 802.11n 5GHz
  • 802.11ac
  • WiFi 6 (802.11ax)
  • WiFi 6E
Others
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Wi-Fi Display
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Wi-Fi Display
  • Wi-Fi MiMO

Bluetooth

Version Bluetooth 5.0 LE Low energy consumption Bluetooth 5.3 LE Low energy consumption
Others
  • A2DP (Advanced Audio Distribution Profile)
  • AVRCP (Audio/Visual Remote Control Profile)
  • DIP (Device ID Profile)
  • HFP (Hands-Free Profile)
  • HID (Human Interface Profile)
  • HSP (Headset Profile)
  • LE (Low Energy)
  • MAP (Message Access Profile)
  • PAN (Personal Area Networking Profile)
  • OPP (Object Push Profile)
  • PBAP/PAB (Phone Book Access Profile)
  • ANT+
  • APT-x
  • SBC
  • A2DP (Advanced Audio Distribution Profile)
  • AVRCP (Audio/Visual Remote Control Profile)
  • DIP (Device ID Profile)
  • HFP (Hands-Free Profile)
  • HID (Human Interface Profile)
  • HSP (Headset Profile)
  • LE (Low Energy)
  • MAP (Message Access Profile)
  • PAN (Personal Area Networking Profile)
  • OPP (Object Push Profile)
  • PBAP/PAB (Phone Book Access Profile)
  • ANT+
  • APT-x
  • LDAC
  • SBC

Navigation

Navigation
  • GPS
  • A-GPS
  • GLONASS
  • Beidou
  • Galileo
  • GPS (L1+L5)
  • Galileo (E1+E5a)
  • GPS
  • A-GPS
  • GLONASS
  • Beidou
  • QZSS
  • Galileo
  • GPS (L1+L5)
  • GLONASS (L1)
  • Galileo (E1+E5a)

USB

USB
  • Charging
  • Mass Storage
  • USB On-The-Go (OTG)
  • USB Type C
  • USB Host 3.1
  • Charging
  • Mass Storage
  • USB On-The-Go (OTG)
  • USB Type C
  • USB Host 3.2

SAR

European measurement

The European Union sets a limit of 2 W/kg averaged over 10 grams of tissue.

0.460 W/Kg on head
1.510 W/Kg on body
--
American measurement

The FCC limit is 1.6 W/kg measured in a volume of 1 gram of tissue

-- --

Others

Others
  • NFC
  • Computer sync
  • OTA sync
  • Tethering.
  • VoLTE
  • ANT+
  • NFC
  • Computer sync
  • OTA sync
  • Tethering.
  • VoLTE
  • VoWiFi
  • eSIM

User reviews

Does it have good coverage for calls?
8.9
10
Quality of the GPS
9.1
9.9
And the WiFi?
9.1
9.9
Number of reviews
62 reviews
9 reviews

Battery

Battery

Capacity
4000 mAh
4000 mAh
Type Li-Polymer Li-Ion
Fast charge Yes,
25.0W
Yes,
25.0W
Others
  • Wireless charging
  • Reverse charging
  • Non-removable
  • Bypass Charging
  • Wireless charging
  • Reverse charging
  • Non-removable

User reviews

How long does the battery last?
  • 8%
    Less than half day
  • 40%
    Less than a day
  • 37%
    One day
  • 11%
    More than one day
  • 3%
    Two days or more
  • 0%
    Less than half day
  • 0%
    Less than a day
  • 33%
    One day
  • 56%
    More than one day
  • 11%
    Two days or more
Number of reviews
62 reviews
9 reviews

Software

Software

Operating System
  • Android 14
    Android 14 Upside-down cake, 8 months ago
  • Android 14
    Android 14 Upside-down cake, 8 months ago
Google Services (official) Yes Yes

User reviews

Did it come with preinstalled applications?
  • 2%
    It comes with a clean operating system
  • 87%
    It has preinstalled apps but they don't bother me
  • 12%
    It has preinstalled apps that I can't uninstall
  • 11%
    It comes with a clean operating system
  • 78%
    It has preinstalled apps but they don't bother me
  • 11%
    It has preinstalled apps that I can't uninstall
Do you regularly receive updates?
  • 0%
    Never
  • 2%
    Once a year
  • 33%
    Every six months
  • 66%
    Every two months or less
  • 0%
    Never
  • 0%
    Once a year
  • 25%
    Every six months
  • 75%
    Every two months or less
Number of reviews
62 reviews
9 reviews