Samsung Galaxy S23 Ultra vs Xiaomi Poco X8 Pro Max Specs Comparison

Availability

Officially announced
Feb 01, 2023	Mar 17, 2026
Prices (MSRP)
8GB/256GB - $1200 | €1300 12GB/512GB - $1450 | €1589 12GB/1024GB - $1649 | €1749	12GB/256GB - $469

Design

Dimensions
6.43 x 3.07 x 0.35 inches (~0.42 inches with camera bump) 163.3 x 78 x 8.9 mm (~10.68 mm with camera bump)	6.41 x 3.07 x 0.32 inches 162.9 x 77.9 x 8.2 mm
Weight
8.25 oz / 234.0 g	7.69 oz / 218.0 g
Materials
Back: Glass (Corning Gorilla Glass Victus 2) Frame: Aluminum	Back: Glass Frame: Aluminum
Resistance
Water, Splash, Dust; IP68	Water, Dust; IP68
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint	Ultrasonic in-screen fingerprint
Features
Stylus
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Phantom Black, Cream, Green, Lavender

Display

Size
6.8-inch, 89.87% screen-to-body	6.8-inch, 90.22% screen-to-body
Type
Dynamic AMOLED, 120Hz, HDR, 1750 nits	AMOLED, 120Hz, 3500 nits
Resolution
3088x1440px, 19.3:9 ratio, 501 PPI	2772x1280px, 447 PPI
Protection
Corning Gorilla Glass Victus 2

PhoneArena Display Test

Bright Max (20% APL)
1598 (Good)	3362 (Excellent)
Bright Min
0.8 (Excellent)	1.9 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 8 Gen 2 SM8550 (4 nm)	MediaTek Dimensity 9500 (3 nm)
Processor
Octa-core 1x3.36GHz Kryo Prime 4x2.8GHz Kryo Gold 3x2.0GHz Kryo Silve	Octa-core 1x4.21GHz C1-Ultra 3x3.5GHz C1-Premium 4x2.7 GHz C1-Pro
GPU
Adreno 740	Mali G1-Ultra
Memory
8GB (LPDDR5X)/256GB (UFS 4.0) 12GB/256GB 12GB/512GB 12GB/1024GB	12GB/256GB 12GB/512GB
Storage expansion
not expandable
OS
Android (14, 13)	Android (16)

PhoneArena Performance Test

GeekBench 6 Single
1971	2636
GeekBench 6 Multi
5115	8334
3D Mark High
3828	4194
3D Mark Low
1951	3416

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
5000 mAh, Li - Ion	8500 mAh, Si - Carbon
Charging
Fast charging Qi wireless charging, Reverse wireless charging
Charge speed
Wired: 45.0W Wireless: 15.0W	Wired: 100.0W

PhoneArena Battery Tests

Battery Life Estimate

7h 17min

Browsing

18h 57min

Video

8h 54min

Gaming

10h 59min

Battery Life Estimate

10h 21min

Browsing

26h 6min

Video

15h 26min

Gaming

9h 55min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Quad camera	Dual camera
Main camera
200 MP (OIS, PDAF) Sensor name: Samsung ISOCELL HP2 Aperture size: F1.7 Focal length: 24 mm Sensor size: 1/1.3" Pixel size: 0.6 μm	50 MP (OIS, PDAF) Aperture size: F1.5
Second camera
12 MP (Ultra-wide) Sensor name: Sony IMX564 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) Sensor name: Sony IMX754 Optical zoom: 10.0x Aperture size: F4.9 Focal Length: 230 mm Sensor size: 1/3.52" Pixel size: 1.12 μm
Fourth camera
10 MP (Telephoto, OIS) Sensor name: Sony IMX754 Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 69 mm Sensor size: 1/3.52" Pixel size: 1.12 μm
Flash
LED	LED
Video recording
8K UHD (30 fps), 4K UHD (60 fps), 1080p (960 fps) OIS, HDR	Yes
Front
12 MP (PDAF) Video capture: 4K UHD (60 fps)	20 MP

PhoneArena Camera Tests

147

Overall

150

Photo

144

Video

N/A

Overall

N/A

Photo

N/A

Video

Learn more on our PhoneArena Camera Test Results page

Connectivity & Features

Bluetooth
5.3	Yes
WLAN
Wi-Fi 6,Wi-Fi 6E Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax	Wi-Fi 6,Wi-Fi 7 Wi-Fi Direct, Hotspot
USB
Type-C, USB 3.2	Type-C
Sensors
Accelerometer, Gyroscope, Compass, Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Hearing aid compatible
M3/T4
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, Ultra Wideband (UWB)	NFC

Multimedia

Headphones
No 3.5mm jack	No 3.5mm jack
Speakers
Earpiece, Multiple speakers	Earpiece, Multiple speakers
Screen mirroring
	Wireless screen share
Additional microphone(s)
	Noise cancellation

Cellular

5G Bands
n1, n7, n28, n41, n66, n71, n78, n258, n260, n261, SA, NSA, Sub-6, mmWave International version - n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n75, n77, n78, SA, NSA, Sub-6	5G Ready
LTE Bands
1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71 International version - 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66
TDD Bands
38, 39, 40, 41, 46, 48 International version - 38, 39, 40, 41
3G Bands
1, 2, 4, 5, 8
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s
SIM type
Dual Nano SIM + eSIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Dec 08, 2023 FCC ID value: A3LSMS918U
Measured SAR
Head: 1.12 W/kg Body: 0.92 W/kg Simultaneous Transmission: 1.58 W/kg Wireless Router: 1.16 W/kg

Alternative variants

With 12GB RAM

Memory	12GB

With 12GB RAM and 512GB internal storage

Memory	12GB/512GB
Prices (MSRP)	$1450 | €1589

With 12GB RAM and 1TB internal storage

Memory	12GB/1024GB
Prices (MSRP)	$1649 | €1749

International

5G Bands	n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n75, n77, n78, SA, NSA, Sub-6
LTE Bands	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 66
TDD Bands	38, 39, 40, 41

Discover more

Full Specs Samsung Galaxy S23 Ultra Specs PA Review Samsung Galaxy S23 Ultra Review

Full Specs Xiaomi Poco X8 Pro Max Specs PA Review Xiaomi Poco X8 Pro Max Review