Samsung Galaxy S21 5G vs Samsung Galaxy S24 Ultra Comparison and Differences

Smartphone 1

Samsung Galaxy S21 5G

Samsung Galaxy S21 5G

Smartphone 2

Samsung Galaxy S24 Ultra

Samsung Galaxy S24 Ultra

Smartphone 3

Samsung Galaxy S21 5G or Samsung Galaxy S24 Ultra Specs Comparison

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Common specs

Brand and model Samsung Galaxy S21 5G Samsung Galaxy S24 Ultra
Rating (+) (+)
Release date 2021, January 14 2024, January 17
Dimensions (HxWxD) 151.7 x 71.2 x 7.9 mm | 5.97 x 5.97 x 2.8 in 162.3 x 79 x 8.6 mm | 6.39 x 6.39 x 3.11 in
Weight 169 g | 5.96 oz 232 g | 8.18 oz
Body Build Glass front (Gorilla Glass Victus), plastic back, aluminum frame Glass front (Gorilla Glass Armor), glass back (Gorilla Glass), titanium frame
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Colors Phantom Gray, Phantom White, Phantom Violet, Phantom Pink Titanium Black, Titanium Gray, Titanium Violet, Titanium Yellow, Titanium Blue, Titanium Green, Titanium Orange
Battery 4000 mAh, Li-Ion, non-removable 5000 mAh, Li-Ion, non-removable
Approximate price $ 800 1200 EUR
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Screen

Technology Dynamic AMOLED 2X Dynamic LTPO AMOLED 2X
Touchscreen capacitive touchscreen capacitive touchscreen
Display colors 16M 16M
Screen size 6.2" in 6.8" in
Screen area 94.1 cm2 113.5 cm2
Screen format 20:9 (height:width) 19.5:9 (height:width)
Screen to body ratio 87.2% 88.5%
Screen resolution 1080 x 2400 px 1440 x 3120 px
Screen PPI /points per inch/ 421 PPI 505 PPI
Screen protection Corning Gorilla Glass Victus Corning Gorilla Glass Armor
Other specs - Always-on display
-120Hz
-HDR10+
-1300 nits (peak)
- 120Hz, HDR10+, 2600 nits (peak)
-Always-on display
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Camera and Video

Rear camera, main 12 MP, Triple 200 MP, Quad
Camera specs -12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, Dual Pixel PDAF, OIS
-64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom
-12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video
-200 MP, f/1.7, 24mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, Laser AF, OIS
-10 MP, f/2.4, 67mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x optical zoom
-50 MP, f/3.4, 111mm (periscope telephoto), 1/2.52", 0.7µm, PDAF, OIS, 5x optical zoom
-12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video
Functions LED flash, auto-HDR, panorama LED flash, auto-HDR, panorama
Video 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS 8K@24/30fps, 4K@30/60/120fps, 1080p@30/60/240fps, HDR10+, stereo sound rec., gyro-EIS
DxOMark Main Score 116 144
DxOMark Photo 123 144
DxOMark Video 93 137
Front camera, selfie 10 MP, Single 12 MP, Single
Specifications 10 MP, f/2.2, 26mm (wide), 1/3.24'', 1.22µm, Dual Pixel PDAF 12 MP, f/2.2, 26mm (wide), dual pixel PDAF
Functions Dual video call, Auto-HDR Dual video call, Auto-HDR, HDR10+
Video 4K@30/60fps, 1080p@30fps 4K@30/60fps, 1080p@30fps4K@30/60fps, 1080p@30fps
DxOMark Selfie Score 98
DxOMark Photo 100
DxOMark Video 95

Performance

Operating system - OS Android 11, One UI 3.1 Android 14, One UI 6.1
Chipset - Exynos 2100 (5 nm)
- Qualcomm SM8350 Snapdragon 888 (5 nm) - USA/China
- Qualcomm SM8650-AC Snapdragon 8 Gen 3 (4 nm)
CPU - Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
-Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680 - USA/China
- 8-core (1x3.39GHz Cortex-X4 & 3x3.1GHz Cortex-A720 & 2x2.9GHz Cortex-A720 & 2x2.2GHz Cortex-A520)
GPU Mali-G78 MP14 - International
Adreno 660 - USA/China
Adreno 750 (1 GHz)
External memory No No
Internal memory 128GB 8GB RAM, 256GB 8GB RAM 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM

Benchmark

Antutu 10 Total 715197 1523833
Antutu 10 CPU 205401 452123
Antutu 10 GPU 214138 374852
Antutu 10 Mem 131954 386963
Antutu 10 UX 205401 452123
Antutu 9 Total 755368
Antutu 8 Total 601547
GeekBench 6 Single Core 2267
GeekBench 6 Multi Core 7085
GeekBench 5 Single Core 945
GeekBench 5 Multi-Core 3061

Communication and Connectivity

SIM card Single SIM (Nano-SIM and/or eSIM)Dual SIM (Nano-SIM and/or eSIM, dual stand-by) Nano-SIM and eSIM or Dual SIM (2 Nano-SIMs and eSIM, dual stand-by)
Network GSM / CDMA / HSPA / EVDO / LTE / 5G GSM / CDMA / HSPA / EVDO / LTE / 5G
Bands -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only) 
CDMA 800 / 1900 & TD-SCDMA
-3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100  
CDMA2000 1xEV-DO
-4G - LTE
-5G - SA/NSA/Sub6/mmWave
-2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only)
CDMA 800 / 1900 & TD-SCDMA
-3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
CDMA2000 1xEV-DO
-4G - 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International
-5G - 1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International
SA/NSA/Sub6/mmWave - USA
Speed HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G HSPA, LTE-A (up to 7CA), 5G
GPRS Yes Yes
Edge Yes Yes
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
GPS Yes, with A-GPS, GLONASS, BDS, GALILEO GPS, GLONASS, BDS, GALILEO, QZSS
NFC Yes Yes
USB USB Type-C 3.2, USB On-The-Go USB Type-C 3.2, DisplayPort 1.2, OTG
Bluetooth 5.0, A2DP, LE 5.3, A2DP, LE
Harmful irradiation SAR - 0.74 W/kg (head) 1.08 W/kg (body)
SAR EU - 0.46 W/kg (head) 1.51 W/kg (body)
SAR - 1.26 W/kg (head)     0.62 W/kg (body)    
SAR EU - 1.06 W/kg (head)     1.30 W/kg (body)    

Music and Audio

Radio FM radio (Snapdragon only) No
Headphone jack No No
Others - 32-bit/384kHz audio
-Tuned by AKG
- 32-bit/384kHz audio
-Tuned by AKG

Other features

Sensors - Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer - Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Other extras
- Samsung DeX, Samsung Wireless DeX (desktop experience support)
-ANT+
-Bixby natural language commands and dictation
- Fast charging 25W
-USB Power Delivery 3.0
-Fast Qi/PMA wireless charging 15W
-Reverse wireless charging 4.5W
- Samsung Pay (Visa, MasterCard certified)
-IP68 dust/water resistant (up to 1.5m for 30 mins)

- Samsung DeX, Samsung Wireless DeX (desktop experience support)
-Ultra Wideband (UWB) support
- 45W Fast charging, Power Delivery 3.0, 65% in 30 min
-15W Wireless charging (Qi/PMA)
-4.5W Reverse wireless charging
- IP68 dust/water resistant (up to 1.5m for 30 min)
-Stylus (Bluetooth integration, accelerometer, gyro)
Versions
- Versions: SM-G991B, SM-G991B/DS (International); SM-G991U (USA); SM-G991U1 (USA unlocked); SM-G991W (Canada); SM-G991N (Korea); SM-G9910 (China)

Reviews and Opinions on Samsung Galaxy S21 5G and Samsung Galaxy S24 Ultra

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