Device comparison

Two devices. One clear decision.

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Device A

8

ASUS ROG Phone · Phones

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Device B

Xiaomi · Phones

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Complete comparison

Every available group and stored value, aligned by field.

Differences only

LAUNCH DATE3 fields

NETWORK6 fields

Specification	8	18 Pro Max
2G Bands	GSM 850 / 900 / 1800 / 1900	GSM B2 / B3 / B5 / B8
3G Bands	WCDMA 800 / 850 / 900 / 1700 / 1900 / 2100	WCDMA B1 / B2 / B4 / B5 / B6 / B8 / B19
4G LTE	FDD: 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 32, 66; TDD: 34, 38, 39, 40, 41, 42, 43, 48 (WW version)	FDD-LTE B1/B2/B3/B4/B5/B7/B8/B12/B13/B14/B17/B18/B19/B20/B25/B26/B28/B29/B66/B71; TD-LTE B34/B38/B39/B40/B41/B42/B43/B48
5G	SA/NSA n1, n2, n3, n5, n7, n8, n12, n18, n20, n25, n26, n28, n38, n40, n41, n48, n66, n77, n78, n79 (WW version)	n1, n2, n3, n5, n7, n8, n12, n13, n14, n18, n20, n25, n26, n28, n29, n38, n40, n41, n48, n66, n70, n71, n77, n78, n79, n80, n81, n83, n84, n89
Speed	HSPA, LTE, 5G	—
Technology	GSM / HSPA / LTE / 5G	5G / 4G LTE / 3G / 2G

BODY6 fields

Specification	8	18 Pro Max
Build	Glass front (Gorilla Glass Victus 2)	Glass back (Star River Blue / Transparent) or fibreglass back (Black / White / Ice Peach Pink), metal frame, Xiaomi Dragon Crystal Glass 3.0 front
Colors	—	Classic Black, Classic White, Ice Peach Pink, Star River Blue, Red Transparent Special Edition
Dimensions	163.8 x 76.8 x 8.9 mm	163.39 x 77.6 x 8.39 mm (Black / White / Ice Peach Pink); 8.47 mm thick (Star River Blue / Transparent)
IP Rating	IP68	IP66 / IP68 / IP69
SIM	Nano-SIM + Nano-SIM (dual standby)	Dual Nano-SIM
Weight	225 g	235 g (Black / White / Ice Peach Pink); 240 g (Star River Blue / Transparent)

DISPLAY7 fields

Specification	8	18 Pro Max
Brightness	2500 nits (peak); 1600 nits (HBM)	4000 nits (peak), main and rear displays
Features	HDR10; 107.37% DCI-P3 / 145.65% sRGB; 720Hz touch sampling rate	—
Protection	Corning Gorilla Glass Victus 2	Xiaomi Dragon Crystal Glass 3.0
Refresh Rate	LTPO 1-120Hz; up to 165Hz	1-120Hz adaptive (LTPO), 300Hz touch sampling; rear display 120Hz
Resolution	1080 x 2400 pixels (FHD+) (~388 ppi density)	2624 x 1208 pixels (main); 976 x 596 pixels (rear display)
Size	6.78 inches	6.9 inches (main); 2.9 inches (rear display)
Type	Samsung Flexible AMOLED, LTPO, 165Hz, HDR10	LTPO OLED (Super Pixel Screen 2.0, M11 light-emitting materials), BT.2020 colour gamut, HDR10+, Dolby Vision, DC dimming, hardware-level privacy display; secondary 2.9-inch OLED rear display

PLATFORM4 fields

Specification	8	18 Pro Max
CPU	Octa-core (1x3.3 GHz Cortex-X4 + 3x3.2 GHz Cortex-A720 + 2x3.0 GHz Cortex-A720 + 2x2.3 GHz Cortex-A520)	Octa-core, Qualcomm 4th-gen Oryon, up to 5 GHz
Chipset	Qualcomm Snapdragon 8 Gen 3 (SM8650) (4 nm)	Qualcomm Snapdragon 8 Elite Extreme Gen 6 (2 nm)
GPU	Adreno 750	Qualcomm Adreno
OS	Android 14, ROG UI	Android 17, Xiaomi HyperOS 4

MEMORY5 fields

MAIN CAMERA3 fields

Specification	8	18 Pro Max
Features	LED flash, gimbal OIS, AI Object Sense	Leica optics, Legendary Moment imaging (on-device + cloud processing), up to 12.8x lossless zoom, 12cm telephoto macro, LED flash
MAIN CAMERA	50 MP, f/1.9, 23.8mm (wide), 1/1.56", Sony IMX890, gimbal OIS \| 32 MP (telephoto), 3x optical zoom, OIS \| 13 MP, 12.7mm, 120° (ultrawide) [MY/PH spec pages list a 5 MP macro as third camera]	200 MP, f/1.67, 23mm (wide), 1/1.28-inch Light Hunter 960L, LOFIC, OIS; 200 MP, f/2.4, 75mm (periscope telephoto), 1/1.56-inch Samsung HP5, 3.2x optical zoom; 50 MP, f/2.4, 17mm (ultrawide), 1/2.88-inch OmniVision OV51D40
Video	8K@24fps, 4K@30/60fps, 1080p@30/60fps, HDR10+ (4K); slow motion 4K@120fps, 1080p@120/240fps, 720p@120/240/480fps	8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240/960fps

SELFIE CAMERA3 fields

Specification	8	18 Pro Max
Features	Pixel binning	Portrait blur, AI beauty, face fill light, dynamic photos, time-lapse, slow motion
Selfie camera	32 MP RGBW, 22mm, 1.4µm (binned)	50 MP, f/2.2, 1/2.88-inch
Video	1080p@30fps	4K@30/60fps, 1080p@30/60fps

SOUND2 fields

Specification	8	18 Pro Max
3.5mm jack	Yes; Hi-Res Audio up to 384 kHz / 32-bit; dual mics with noise reduction	No
Loudspeaker	Yes, with stereo speakers (multi-magnet dual)	Yes, triple-speaker stereo setup

COMMUNICATION6 fields

Specification	8	18 Pro Max
Bluetooth	5.4	6.0
NFC	Yes	Yes (plus UWB and IR blaster)
Positioning	GPS (L1+L5), GLONASS (L1), Galileo (E1+E5a), BeiDou (B1i/B1c/B2a), QZSS (L1+L5), NavIC	Dual-frequency GPS, tri-frequency BeiDou, GLONASS
Radio	—	No
USB	2x USB Type-C (bottom USB 3.2 Gen 2 + side port), per ROG Phone 8 Pro review (same chassis)	USB Type-C 3.2 Gen 1 (5Gbps)
WLAN	Wi-Fi 802.11 a/b/g/n/ac/ax/be (Wi-Fi 7)	Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be), 2x2 MIMO

FEATURES3 fields

Specification	8	18 Pro Max
Ai	X Sense 2.0, X Capture, AI Object Sense, AI Grabber	—
Other features	AirTriggers; optional AeroActive Cooler X	—
Sensors	In-display fingerprint, face recognition, accelerometer, e-compass, gyroscope, proximity, ambient light, AirTrigger	Ultrasonic under-display fingerprint, accelerometer, gyroscope, compass, proximity, ambient light, barometer, Hall sensor, IR blaster

BATTERY3 fields

Specification	8	18 Pro Max
Capacity	5500 mAh	8500 mAh
Charging Type	65W wired (QC 5.0 / PD 3.0 / PPS), 0-100% in 39 min; 15W wireless (Qi 1.3); 10W reverse wired	100W wired, 50W wireless, 27W reverse wired
Type	Li-Po 5500 mAh (typical)	Silicon-carbon (Jinsha River battery), single cell

ADDITIONAL INFORMATION7 fields

Specification	8	18 Pro Max
Colors	Phantom Black; Rebel Grey	Classic Black, Classic White, Ice Peach Pink, Star River Blue, Red Transparent Special Edition
Compatibility	Band lists differ between WW/US/CN versions; dual Nano-SIM, no eSIM listed; regional spec pages (MY/PH) list 12GB/256GB with 5MP macro camera	China launch model (sold in China from 23 Sep 2026, HyperOS 4). Xiaomi has confirmed a global launch but has not given dates or prices. Reports based on HyperOS code say the global 18 Pro Max will have a smaller battery (7,050 mAh vs 8,500 mAh in China) with similar charging speed (90/100W).
Cooling	ROG GameCool 8: 360° SoC Cooling System Gen 2, rapid-cooling conductor, vapor chamber, graphite sheet, boron nitride; optional AeroActive Cooler X	New-generation circular cold-pump cooling system with a 5,513 mm² heat-dissipation area; OFFSET PoP high-thermal-conductivity chip packaging
Launch Price	EUR 1,099.99 (Europe)	CNY 6,999 (12GB+256GB), CNY 7,999 (12GB+512GB), CNY 8,999 (16GB+512GB), CNY 9,999 (16GB+1TB), CNY 10,999 (Transparent Edition 16GB+1TB) — China launch, 2026-09-23
Launch Price (USD)	$1,099.99 (12GB/256GB)	—
Models and regions	WW, US and CN versions with different band lists	—
Price in Nigeria	₦1,540,000 (estimate, converted from US launch price)	₦1,463,000 – ₦2,299,200 (estimate, converted from China launch price)

TESTS3 fields

Specification	8	18 Pro Max
Battery Endurance	At least 3.4 h heavy gaming, 23 h video streaming (ASUS manufacturer figures)	15-hour endurance test: 48% battery left (iPhone 18 Pro Max: 31%) (Xiaomi launch figure); keeps at least 80% capacity after 2,000 cycles (Xiaomi). AnTuTu review: 3 h of continuous gaming used 36% (64% left); 6 h of mixed use used 48% (52% left)
Graphics	—	AnTuTu v12.0.1 GPU: 1,629,180; Honor of Kings (max settings, 30 min): avg 120.14 fps; Genshin Impact (max settings): avg 59.96 fps (AnTuTu review)
Performance	—	AnTuTu v12.0.1: 4,443,544 (CPU 1,159,810; memory 684,064; UX 970,490) (AnTuTu review)

SECURITY1 field

Specification	8	18 Pro Max
Security	In-display fingerprint, face recognition	3D ultrasonic under-display fingerprint, face unlock