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Samsung Galaxy S24 Ultra vs S21 Plus

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Samsung Galaxy S24 Ultra vs S21 Plus

91 out of 100
Samsung Galaxy S24 Ultra
VS
68 out of 100
Samsung Galaxy S21 Plus
Samsung Galaxy S24 Ultra
Samsung Galaxy S21 Plus

Here we compared two flagship smartphones: the 6.8-inch Samsung Galaxy S24 Ultra (with Qualcomm Snapdragon 8 Gen 3 (for Galaxy)) that was released on January 17, 2024, against the Samsung Galaxy S21 Plus, which is powered by Exynos 2100 and came out 3 years and 1 month before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery life
  6. Camera
  7. Comments

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Samsung Galaxy S24 Ultra
  • The rear camera has a 5x optical zoom
  • 2.1x better performance in AnTuTu Benchmark (1952K versus 919K)
  • Shows 27% longer battery life (26:30 vs 20:53 hours)
  • Delivers 64% higher peak brightness (1456 against 887 nits)
  • Better camera quality (According to DxOMark rating)
  • 27% higher pixel density (501 vs 394 PPI)
  • Has 50% more RAM: 12GB versus 8GB
  • Newer Bluetooth version (v5.3)
  • The phone is 3 years and 1 month newer
  • Compatible with the latest Wi-Fi 7 wireless networks
  • Supports higher wattage charging (45W versus 25W)
Reasons to consider the Samsung Galaxy S21 Plus
  • Slow-motion recording at 960FPS
  • Has 2 SIM card slots
  • Weighs 32 grams less

Review

Evaluation of Samsung Galaxy S24 Ultra and S21 Plus crucial features
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
NanoReview Score
Final comparison evaluation
Choose the importance of each parameter to more accurately identify the smartphone that best meets your particular needs.

Tests and specifications

Comparison table of technical specifications and tests
Phone:
Galaxy S24 Ultra
vs
Galaxy S21 Plus

Display

TypeDynamic AMOLEDDynamic AMOLED
Size6.8 inches6.7 inches
Resolution1440 x 3088 pixels1080 x 2400 pixels
Aspect ratio19.5:920:9
PPI501 ppi394 ppi
Refresh rate120 Hz120 Hz
Adaptive refresh rateYes (1-120 Hz)Yes (48-120 Hz)
Max rated brightness2600 nits1300 nits
HDR supportYes, HDR10+Yes, HDR10+
Touch sampling rate240 Hz -
Screen protectionGorilla Glass ArmorGorilla Glass Victus
Screen-to-body ratio88.5%88.7%
Display features - DCI-P3
- Always-On Display
- DC Dimming		 - DCI-P3
- Always-On Display
Display tests
RGB color space99.5%98.9%
PWM480 Hz240 Hz
Response time1 ms6.2 ms
Contrast∞ Infinity∞ Infinity
Peak brightness test (auto)
Galaxy S24 Ultra+64%
1456 nits
Galaxy S21 Plus
887 nits

Design and build

Height162.3 mm (6.39 inches)161.5 mm (6.36 inches)
Width79 mm (3.11 inches)75.6 mm (2.98 inches)
Thickness8.6 mm (0.34 inches)7.8 mm (0.31 inches)
Weight232 g (8.18 oz)200 g (7.05 oz)
WaterproofIP68IP68
Advanced coolingVapor chamber -
Rear materialGlassGlass
Frame materialMetalMetal
ColorsBlack, Gray, Blue, Green, Orange, Purple, YellowBlack, Silver, Gold, Red, Purple
Fingerprint scannerYes, in-displayYes, in-display
Screen-to-body ratio

Performance

Tests of Samsung Galaxy S24 Ultra and Samsung Galaxy S21 Plus in the benchmarks
SoC
ChipsetQualcomm Snapdragon 8 Gen 3 (for Galaxy)Samsung Exynos 2100
Max clock3390 MHz2840 MHz
CPU cores8 (1 + 3 + 2 + 2)8 (1 + 3 + 4)
Architecture- 2 cores at 2.27 GHz: Cortex-A520
- 2 cores at 2.96 GHz: Cortex-A720
- 3 cores at 3.15 GHz: Cortex-A720
- 1 core at 3.3 GHz: Cortex-X4		- 4 cores at 2.2 GHz: Cortex-A55
- 3 cores at 2.81 GHz: Cortex-A78
- 1 core at 2.91 GHz: Cortex-X1
L3 cache12 MB -
ManufacturingTSMCSamsung
Lithography process4 nanometers5 nanometers
Neural processor (NPU)HexagonYes
GraphicsAdreno 750Mali-G78 MP14
GPU shading units1536896
GPU clock1000 MHz854 MHz
FLOPS~2774 GFLOPS~1530.4 GFLOPS

Benchmarks

Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
AnTuTu Benchmark 10
CPU474941262973
GPU764723294382
Memory400984147307
UX312032214686
Total score1952680919348
Samples[29 tests][17 tests]
3DMark Wild Life Performance
Max surface temperature46.8 °C41.5 °C
Stability53%67%
Graphics test95 FPS33 FPS
Graphics score160265538
PCMark 3.0
Web score18245 -
Video editing8000 -
Photo editing36519 -
Data manipulation15998 -
Writing score22603 -

Memory

RAM
RAM size12 GB8 GB
Memory typeLPDDR5XLPDDR5
Memory clock4200 MHz2750 MHz
Channels42
Storage
Storage size256, 512, 1024 GB128, 256 GB
Storage typeUFS 4.0UFS 3.1
Memory cardNoNo

Software

Operating systemAndroid 14 Android 11 (Can be upgraded to Android 14)
ROMOne UI 6.1One UI 6
OS size28 GB27.2 GB

Battery

Capacity5000 mAh4800 mAh
Max charge power45 W25 W
Battery typeLi-IonLi-Ion
ReplaceableNoNo
Wireless chargingYes (15 W)Yes (15 W)
Reverse chargingYes, (wireless)Yes, (wireless)
Fast chargingYes (69% in 30 min)Yes (54% in 30 min)
Full charging time1:05 hr1:12 hr
Battery life tests
Web browsing10:18 hr07:28 hr
Watching video18:00 hr13:15 hr
Gaming05:51 hr05:04 hr
Standby122 hr105 hr
General battery life

Main camera

Matrix200 megapixels12 megapixels
Image resolution16320 x 122404000 x 3000
ZoomOptical, 5xOptical, 1.1x
FlashLEDDual LED
StabilizationOpticalOptical
8K video recordingUp to 30FPSUp to 24FPS
4K video recordingUp to 120FPSUp to 60FPS
1080p video recordingUp to 240FPSUp to 60FPS
Slow motion240 FPS (1080p)960 FPS (720p)
Angle of widest lens120°120°
Lenses1) Standard: 200 MP
2) Telephoto: 50 MP
3) Telephoto: 12 MP
4) Ultrawide: 12 MP
1) Standard: 12 MP
2) Telephoto: 64 MP
3) Ultrawide: 12 MP
Camera features - Bokeh mode
- Pro mode
- RAW support		 - Bokeh mode
- Pro mode
- RAW support
Standard lens
Image resolution200 MP12 MP
Aperturef/1.7f/1.8
Focal length23 mm26 mm
SensorSamsung ISOCELL HP2Sony IMX555
Sensor size1/1.3"1/1.76"
Pixel size0.6 micron1.8 micron
AutofocusLaser autofocusPhase autofocus (Dual Pixel)
StabilizationOpticalOptical
Telephoto lens
Image resolution50 MP64 MP
Aperturef/3.4f/2.0
Focal length111 mm28 mm
SensorSony IMX854Samsung Bright S5KGW2
Sensor size1/2.52"1/1.72"
Pixel size0.7 micron0.8 micron
StabilizationOpticalOptical
Ultra-wide lens
Image resolution12 MP12 MP
Aperturef/2.2f/2.2
Focal length13 mm13 mm
SensorSony IMX564Sony IMX563
Sensor size1/2.55"1/2.55"
Pixel size1.4 micron1.4 micron
StabilizationDigitalDigital

DxOMark main camera tests

Photo quality
Video quality
Generic main camera score
Bokeh7070
Preview8272
Zoom145126
SamplesPhoto samples of Samsung Galaxy S24 Ultra from DxOMarkPhoto samples of Samsung Galaxy S21 Plus from DxOMark

Selfie camera

Megapixels12 megapixels10 megapixels
Image resolution4000 x 30003872 x 2592
Aperturef/2.2f/2.2
Focal length26 mm26 mm
SensorSamsung S5K3LUSony IMX374
Sensor size1/3.2"1/3.24"
Pixel size1.12 micron1.22 micron
AutofocusPhase autofocus (Dual Pixel)Phase autofocus (Dual Pixel)
StabilizationDigitalDigital
Video resolution2160p (4K) at 60 FPS2160p (4K) at 60 FPS
Depth sensor (TOF 3D)NoNo

Connectivity

Wi-Fi standardWi-Fi 7 (802.11 a/b/g/n/ac/ax/be)Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version5.35
Bluetooth featuresLELE, A2DP
USB typeUSB Type-CUSB Type-C
USB version3.23.2
USB features - Charging
- USB-Storage mode
- OTG		 - Charging
- USB-Storage mode
- USB-Host mode
- OTG
DisplayPortYes, DP 1.2 -
GPSGPS, GLONASS, Beidou, Galileo, QZSSGPS, GLONASS, Beidou, Galileo
NFC*YesYes
Infrared portNoNo
Network
Number of SIM*12
Type of SIM cardNanoNano
Multi SIM mode - Standby
eSIM support*YesYes
Hybrid slotNoNo
LTE Cat*2024
5G supportYesYes

Sound

SpeakersStereoStereo
Headphone audio jackNoNo
FM radioNoNo
Dolby AtmosYesYes
Speakers test
Max loudness

Other

CategoryFlagshipFlagship
AnnouncedJanuary 2024January 2021
Release dateJanuary 2024February 2021
Launch price$1299$1000
SAR (head)1.06 W/kg0.54 W/kg
SAR (body)1.3 W/kg1.33 W/kg
Sensors - Hall-effect sensor
- Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint		 - Hall-effect sensor
- Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
Bundled chargerNot included -
Further details
Notes on Galaxy S24 Ultra:
    - There is a model with two physical SIM cards and no eSIM, and another with one physical SIM card and eSIM support.
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
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