Samsung Galaxy S21 Ultra vs Xiaomi POCO X4 Pro 5G Specs Comparison

Availability

Officially announced
Jan 14, 2021	Feb 28, 2022
Prices (MSRP)
12GB/128GB - $1200 | €1399 12GB/256GB - $1250 16GB/512GB - $1380

Design

Dimensions
6.50 x 2.98 x 0.35 inches (~0.37 inches with camera bump) 165.1 x 75.6 x 8.9 mm (~9.4 mm with camera bump)	6.46 x 3.00 x 0.32 inches 164.19 x 76.1 x 8.12 mm
Weight
8.04 oz / 229.0 g Europe version - 227 g	7.23 oz / 205.0 g
Materials
Back: Glass (Corning Gorilla Glass Victus) Frame: Aluminum
Resistance
Water, Dust; IP68	Yes; IP53
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint	Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Phantom black, Silver	Laser Black, Laser Blue, POCO Yellow

Display

Size
6.8-inch, 89.33% screen-to-body	6.7-inch, 85.91% screen-to-body
Type
Dynamic AMOLED, 120Hz, HDR, 1500 nits	AMOLED, 120Hz, 1200 nits
Resolution
3200x1440px, 20:9 ratio, 516 PPI	2400x1080px, 20:9 ratio, 395 PPI
Protection
Corning Gorilla Glass Victus	Corning Gorilla Glass 5

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
1.5 (Good)	Untested

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 888 SM8350 (5 nm) Europe version - Exynos 2100 S5E9840	Snapdragon 696 SM6375 (6 nm)
Processor
Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680 Europe version - Octa-core, 1x2.91GHz Cortex-X1, 3x2.81G​Hz Cortex-A78, 4x2.2G​Hz Cortex-A55	Octa-core 2x2.2GHz Kryo 660 6x1.7GHz Kryo 660
GPU
Adreno 660 Europe version - Mali-G78 MP14	Adreno 619
Memory
12GB (LPDDR5)/128GB (UFS 3.1) 12GB/256GB 16GB/512GB	6GB (LPDDR4)/128GB (UFS 2.2)
Storage expansion
not expandable	microSDXC up to 1024 GB
OS
Android (14, 13, 12, 11)	Android (12)

PhoneArena Performance Test

GeekBench 6 Single
1117	Untested
GeekBench 6 Multi
3312	Untested
3D Mark High
1963	Untested
3D Mark Low
1179	Untested

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
5000 mAh, Li - Polymer	5000 mAh
Charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging Qi and Powermat wireless charging, Reverse wireless charging	Fast charging
Charge speed
Wired: 25.0W Wireless: 15.0W	Wired: 67.0W

PhoneArena Battery Tests

Battery Life Estimate

6h 15min

Browsing

14h 43min

Video

8h 52min

Gaming

8h 40min

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Quad camera	Triple camera
Main camera
108 MP (OIS, Laser and PDAF) Aperture size: F1.8 Focal length: 24 mm Sensor size: 1/1.33" Pixel size: 0.8 μm	108 MP (PDAF) Aperture size: F1.9 Sensor size: 1/1.52”
Second camera
12 MP (Ultra-wide, PDAF) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	8 MP (Ultra-wide) Aperture size: F2.2
Third camera
10 MP (Telephoto, OIS, PDAF) Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 70 mm Sensor size: 1/3.2" Pixel size: 1.22 μm	2 MP (Macro)
Fourth camera
10 MP (Telephoto, Periscope, OIS, PDAF) Optical zoom: 10.0x Aperture size: F2.4 Focal Length: 70 mm Sensor size: 1/3.2" Pixel size: 1.22 μm
Flash
LED	LED
Video recording
8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Video light, EIS	Yes
Front
40 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)	16 MP

Connectivity & Features

Bluetooth
5.1	5.1
WLAN
Wi-Fi 6,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax	dual-band Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
Type-C, USB 3.2	Type-C, USB 2.0
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Ambient light sensor, Proximity sensor
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, ANT+	NFC, Infrared

Multimedia

Headphones
No 3.5mm jack	3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Multiple speakers
Features
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus
Screen mirroring
	Wireless screen share
Additional microphone(s)
	Noise cancellation

Cellular

5G Bands
n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave	n1, n3, n5, n7, n8, n20, n28, n38, n40, n41, n77, n78
LTE Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71	1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28
TDD Bands
38, 39, 40, 41, 46, 48	38, 40, 41
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 6, 8, 19
Data Speed
LTE-A Pro Cat 20 (2000/150 Mbit/s)	LTE-A, HSDPA+ (4G) 42.2 Mbit/s
Dual SIM
	Yes
SIM type
Nano SIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Dec 22, 2020 FCC ID value: A3LSMG998U
Measured SAR
Head: 0.77 W/kg Body: 1.02 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.16 W/kg Phablet: 3.15 W/kg

Discover more

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Full Specs Xiaomi POCO X4 Pro 5G Specs