Xiaomi Poco X3 Pro vs Samsung Galaxy S21 Ultra 5G Comparison and Differences

Smartphone 1

Xiaomi Poco X3 Pro

Xiaomi Poco X3 Pro

Smartphone 2

Samsung Galaxy S21 Ultra 5G

Samsung Galaxy S21 Ultra 5G

Smartphone 3

Xiaomi Poco X3 Pro or Samsung Galaxy S21 Ultra 5G Specs Comparison

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Common specs

Brand and model Xiaomi Poco X3 Pro Samsung Galaxy S21 Ultra 5G
Rating (+0) (+1)
Release date 2021, March 22 2021, January 14
Dimensions (HxWxD) 165.3 x 76.8 x 9.4 mm | 6.51 x 6.51 x 3.02 in 165.1 x 75.6 x 8.9 mm | 6.5 x 6.5 x 2.98 in
Weight 215 g | 7.58 oz 227 g | 8.01 oz
Body Build Glass front (Gorilla Glass 6), plastic back Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
Colors Phantom Black, Frost Blue, Metal Bronze Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown
Battery 5160 mAh, Li-Po, non-removable 5000 mAh, Li-Ion, non-removable
Approximate price $ 230 $ 960

Screen

Technology IPS LCD Dynamic AMOLED 2X
Touchscreen capacitive touchscreen capacitive touchscreen
Display colors 16M 16M
Screen size 6.67" inc 6.8" inc
Screen area 107.4 cm2 112.1 cm2
Screen format 20:9 (height:width) 20:9 (height:width)
Screen to body ratio 84.6% 89.8%
Screen resolution 1080 x 2400 px 1440 x 3200 px
Screen PPI /points per inch/ 395 PPI 515 PPI
Screen protection Corning Gorilla Glass 6 Corning Gorilla Glass Victus
Other specs - 120Hz
-HDR10
-450 nits (typ)
- Always-on display
-120Hz
-HDR10+
-1500 nits (peak)

Camera and Video

Rear camera, main 48 MP, Quad 108 MP, Quad
Camera specs -48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF
-8 MP, f/2.2, 119˚ (ultrawide), 1.0µm
-2 MP, f/2.4, (macro)
-2 MP, f/2.4, (depth)
-108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, Laser AF, OIS
-10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom
-10 MP, f/2.4, 70mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom
-12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video
Functions Dual-LED flash, HDR, panorama LED flash, auto-HDR, panorama
Video 4K@30fps, 1080p@30/60/120/240fps, 1080p@960fps, gyro-EIS 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS
DxOMark Main Score 121
DxOMark Photo 128
DxOMark Video 98
Front camera, selfie 20 MP, Single 40 MP, Single
Specifications 20 MP, f/2.2, (wide), 1/3.4'', 0.8µm 40 MP, f/2.2, 26mm (wide), 1/2.8'', 0.7µm, PDAF
Functions HDR, panorama Dual video call, Auto-HDR
Video 1080p@30fps 4K@30/60fps, 1080p@30fps
DxOMark Selfie Score 101
DxOMark Photo 104
DxOMark Video 95

Performance

Operating system - OS Android 11 Android 11, One UI 3.1
Chipset - Qualcomm Snapdragon 860 (7 nm) - Exynos 2100 (5 nm)
- Qualcomm SM8350 Snapdragon 888 (5 nm) - USA/China
Processor CPU - Octa-core (1x2.96 GHz Kryo 485 Gold & 3x2.42 GHz Kryo 485 Gold & 4x1.78 GHz Kryo 485 Silver) - 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
Graphics processor GPU Adreno 640 Mali-G78 MP14 - International
Adreno 660 - USA/China
External memory microSDXC (uses shared SIM slot) No
Internal memory 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM 128GB 12GB RAM, 256GB 12GB RAM, 512GB 16GB RAM

Benchmark

Antutu 10 Total 627869 744835
Antutu 10 CPU 182217 199654
Antutu 10 GPU 156601 229735
Antutu 10 Mem 134217 150252
Antutu 10 UX 182217 199654
Antutu 9 Total 561112
Antutu 8 Total 638987
GeekBench 6 Single Core 969
GeekBench 6 Multi Core 2435
GeekBench 6 OpenCL 2747
GeekBench 6 Vulkan 2441
GeekBench 5 Single Core 738 960
GeekBench 5 Multi-Core 2413 3177

Communication and Connectivity

SIM card Hybrid Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM and/or eSIM)Dual SIM (Nano-SIM and/or eSIM, dual stand-by)
Network GSM / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE / 5G
Bands -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
-3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
-4G - 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41
-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
Speed HSPA 42.2/5.76 Mbps, LTE-A HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G
GPRS Yes Yes
Edge Yes Yes
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot
GPS Yes, with A-GPS, GLONASS, GALILEO, BDS Yes, with A-GPS, GLONASS, BDS, GALILEO
NFC Yes (market/region dependent) Yes
USB USB Type-C 2.0, USB On-The-Go USB Type-C 3.2, USB On-The-Go
Bluetooth 5.0, A2DP, LE 5.2, A2DP, LE
Harmful irradiation SAR - 0.99 W/kg (head) 0.67 W/kg (body)
SAR EU - 0.99 W/kg (head) 0.67 W/kg (body)
SAR - 0.77 W/kg (head) 1.02 W/kg (body)
SAR EU - 0.77 W/kg (head) 1.02 W/kg (body)

Music and Audio

Radio FM radio, recording FM radio (Snapdragon only)
Headphone jack Yes No
Others - 24-bit/192kHz audio - 32-bit/384kHz audio
-Tuned by AKG

Other features

Sensors - Fingerprint (side-mounted), accelerometer, gyro, proximity, compass , Infrared port - Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Other extras
- Fast charging 33W, 59% in 30 min, 100% in 59 min
- IP53, dust and splash protection

- 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)
-Ultra Wideband (UWB) support
-IP68 dust/water resistant (up to 1.5m for 30 mins)
-Stylus support
Versions
- Versions: SM-G998B, SM-G998B/DS (International); SM-G998U (USA); SM-G998U1 (USA unlocked); SM-G998W (Canada); SM-G998N (Korea); SM-G9980 (China)

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