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Smartphone comparison

OnePlus 15 5G vs Xiaomi 18 Pro Max

Compare cameras, battery, screen and everyday features.

Compared products
01Selected
OnePlus 15 5G

OnePlus 15 5G

  • About 165 Hz display refresh rate.
  • About 6.78 inch screen.
  • Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm) processor.
  • Storage: UFS 4.1.
  • 7,300 mAh battery capacity.
KSh 114,000In Stock
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02
Xiaomi 18 Pro Max

Xiaomi 18 Pro Max

  • About 120 Hz display refresh rate.
  • About 6.9 inch screen.
  • Qualcomm SM8975 Snapdragon 8 Elite Extreme Gen 6 (2 nm) processor.
  • Storage: UFS 4.1.
  • 8,500 mAh battery capacity.
KSh 170,000Out of Stock

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Samsung Galaxy S25 UltraKSh 113,000
OnePlus Ace 5 ProKSh 120,500
Samsung Galaxy S26 UltraKSh 124,000
POCO F8 UltraKSh 106,000
Xiaomi 17 Pro MaxKSh 130,000
Google Pixel 9 Pro XLKSh 109,000
Xiaomi 15KSh 104,000
2 of 4 products

Our quick verdict

The Xiaomi 18 Pro Max has a bigger battery (8,500 mAh), runs newer Android 17 and has a higher-resolution main camera (200 MP) and sharper selfies (50 MP), while the OnePlus 15 5G scrolls more smoothly (165 Hz), charges faster (120 W) and is lighter (211 g).

Refresh

OnePlus 15 5G
About 165 Hz display refresh rate
Xiaomi 18 Pro Max
About 120 Hz display refresh rate

Display

OnePlus 15 5G
About 6.78 inch screen
Xiaomi 18 Pro Max
About 6.9 inch screen

Performance

OnePlus 15 5G
Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm) processor
Xiaomi 18 Pro Max
Qualcomm SM8975 Snapdragon 8 Elite Extreme Gen 6 (2 nm) processor

Battery capacity

OnePlus 15 5G
7,300 mAh battery capacity
Xiaomi 18 Pro Max
8,500 mAh battery capacity

Software

OnePlus 15 5G
Runs Android 16, OxygenOS 16 (Global), ColorOS 16 (China)
Xiaomi 18 Pro Max
Runs Android 17, HyperOS 4

Key differences

The main differences to help you choose.

OnePlus 15 5G

  • Faster rated wired charging: 120 W (vs 100 W).
  • Smoother 165 Hz display (vs 120 Hz).
  • Lighter: 211 g (vs 235 g).

Xiaomi 18 Pro Max

  • Bigger battery: 8,500 mAh (vs 7,300 mAh).
  • Higher rated immersion depth: 6 m (vs 2 m), both IP68.
  • Higher-resolution main camera: 200 MP (vs 50 MP).
  • Newer Android 17 (vs Android 16).
  • Brighter display: up to 4,000 nits (vs 1,800).
  • Higher-resolution selfie camera: 50 MP (vs 32 MP).

What matters most to you?

Choose any priorities

How each product answers the questions buyers ask most. Tick a topic to add it, untick one to hide it.

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6 priorities selected.
How each product answers the selected priorities
PriorityOnePlus 15 5GXiaomi 18 Pro Max
Display6.78-inch OLED display, 165 Hz, 450 ppi6.9-inch OLED display, 120 Hz, 418 ppi
Camera50 MP main camera with OIS, plus a 3.5x telephoto camera200 MP main camera with OIS, plus a 3.2x telephoto camera
PerformanceQualcomm Snapdragon 8 Elite Gen 5 processorQualcomm Snapdragon 8 Elite Extreme Gen 6 processor
Battery capacity7,300 mAh battery8,500 mAh battery
Charging120 W wired, 50 W wireless charging100 W wired, 50 W wireless charging
Weight211 g235 g

Detailed comparison

Explore the full specifications, section by section.

General

General specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
BrandOnePlusXiaomi
ModelOnePlus 15 5G18 Pro Max
Announced2025, October 272026, September 23
Release statusAvailable. Released 2025, October 28Available. Released 2026, September 23
Model numbersCPH2747, CPH2745, PLK110, CPH27492611FPNFAG

Design

Design specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
Dimensions161.4 x 76.7 x 8.1 mm (6.35 x 3.02 x 0.32 in)163.4 x 77.6 x 8.4 mm (6.43 x 3.06 x 0.33 in)
Weight211 g or 215 g (7.44 oz)235 g or 240 g (8.29 oz)
Build materialsGlass front (Gorilla Glass Victus 2), aluminum frame, glass back (Gorilla Glass 7i or Crystal Shield Glass) or glass-fiber reinforced plastic backGlass front (Dragon Crystal Glass 3), aluminum frame

Display

Display specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
Display6.78 inches, 112.4 cm2 (~90.8% screen-to-body ratio); LTPO AMOLED, 1B colors, 165Hz, PWM, Dolby Vision, HDR10+, HDR Vivid, 800 nits (typ), 1800 nits (HBM)6.9 inches, 116.2 cm2 (~91.6% screen-to-body ratio); LTPO AMOLED, 68B colors, 2160Hz PWM, 120Hz, Dolby Vision, HDR Vivid, HDR10+, BT.2020, 4000 nits (peak)
Screen resolution1272 x 2772 pixels, 19.5:9 ratio (~450 ppi density)1208 x 2624 pixels, 19.5:9 ratio (~418 ppi density)
Display protectionCorning Gorilla Glass Victus 2Xiaomi Dragon Crystal Glass 3
Display featuresUltra HDR image supportSecondary display (on the back): LTPO AMOLED, 120Hz, Dolby Vision, HDR Vivid, HDR10+, BT.2020, 4000 nits (peak) 2.9 inches, 596 x 976 pixels

Performance

Performance specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
ProcessorQualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)Qualcomm SM8975 Snapdragon 8 Elite Extreme Gen 6 (2 nm)
CPUOcta-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)Octa-core (2x5.01 GHz Prime + 3x4.03 GHz Performance + 3x3.74 GHz Performance)
GPUAdreno 840Adreno 850

Memory & Storage

Memory & Storage specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
RAM12GB / 16GB12GB / 16GB
Storage256GB / 512GB / 1TB256GB / 512GB / 1TB
Storage technologyUFS 4.1UFS 4.1
Expandable storageNoNo
Memory configurations256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM

Cameras

Cameras specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
Rear camera50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, multi-directional PDAF, OIS 50 MP, f/2.8, 80mm (periscope telephoto), 1/2.76", 0.64µm, 3.5x optical zoom, PDAF, OIS 50 MP, f/2.0, 16mm, 116˚ (ultrawide), 1/2.88", 0.61µm, PDAF200 MP, f/1.7, 23mm (wide), 1/1.28", 0.61µm, dual pixel PDAF, OIS 200 MP, f/2.4, 75mm (periscope telephoto), 1/1.56", PDAF (10cm - ∞), OIS, 3.2x optical zoom 50 MP, f/2.4, 17mm, 102˚ (ultrawide), 1/2.88", 0.61µm, PDAF
Front camera32 MP, f/2.4, 21mm (wide), 1/2.74", 0.64µm, AF50 MP, f/2.2, 21mm (wide), 1/2.88", 0.61µm, PDAF
Rear camera featuresLaser focus, color spectrum sensor, LED flash, HDR, panorama, LUT previewLaser AF, color spectrum sensor, Leica lens, Dual-LED dual-tone flash, HDR, panorama
Rear camera video8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, HDR, gyro-EIS, Dolby Vision, LUT8K@30fps (HDR), 4K@30/60/120fps (HDR10+, 10-bit Dolby Vision HDR, 10-bit LOG), 1080p@30/60/120/240/960fps, 720p@1920fps, gyro-EIS
Front camera featuresHDR, panoramaHDR, panorama
Front camera video4K@30/60fps, 1080p@30/60fps, gyro-EIS, HDR4K@30/60fps, 1080p@30/60fps, HDR10+, gyro-EIS

Battery & Charging

Battery & Charging specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
BatterySi/C Li-Ion 7300 mAhSi/C Li-Ion 8500 mAh
Charging120W wired, 120W UFCS, 55W PPS, 36W PD, 36W QC, 50% in 15 min, 100% in 40 min 50W wireless 10W reverse wireless 5W reverse wired Bypass charging100W wired, PD3.0, QC3+, 100W PPS 50W wireless 27W reverse wireless

Software

Software specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
Operating systemAndroid 16, OxygenOS 16 (Global), ColorOS 16 (China)Android 17, HyperOS 4

Network

Network specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
NetworkGSM / HSPA / LTE / 5GGSM / HSPA / LTE / 5G
SIM· Nano-SIM + Nano-SIM + eSIM (max 2 at a time) · Nano-SIM + Nano-SIMNano-SIM + Nano-SIM
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 - International; HSDPA 850 / 900 / 1700(AWS) / 2100 - China; HSDPA 850 / 900 / 1900 / 2100 - IndiaHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 34, 38, 39, 40, 41, 42, 48, 66, 71 - International; 1, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66 - China; 1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66 - India1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 34, 38, 39, 40, 41, 42, 43, 48, 66, 71
5G bands1, 2, 3, 5, 7, 8, 12, 13, 20, 25, 26, 28, 30, 38, 40, 41, 48, 66, 71, 75, 77, 78 SA/NSA/Sub6 - International; 1, 3, 5, 7, 8, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 79, 80, 81, 83, 84, 89 SA/NSA - China; 1, 2, 3, 5, 7, 8, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA - India1, 2, 3, 5, 7, 8, 12, 13, 14, 18, 20, 25, 26, 28, 29, 38, 40, 41, 48, 66, 70, 71, 77, 78, 79, 80, 81, 83, 84, 89 SA/NSA
Network speedHSPA, LTE, 5GHSPA, LTE, 5G

Connectivity

Connectivity specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
NFCYesYes
Bluetooth6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 56.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Wi-FiWi-Fi 802.11 a/b/g/n/ac/6/7, dual or tri-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band, Wi-Fi Direct
PositioningGPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
RadioNoNo
USBUSB Type-C 3.2, OTGUSB Type-C 3.2, Display Port, OTG
InfraredYesYes
Ultra Wideband (UWB)—Ultra Wideband (UWB) support

Durability

Durability specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
Water resistanceIP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 2m for 30 min) Micro-Arc Oxidation frame treatment (Sand Storm color only)IP68 dust tight and water resistant (immersible up to 6m for 30 min)

Features

Features specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
SensorsFingerprint (under display, ultrasonic), accelerometer, proximity, gyro (UAV-grade), compass, barometer (exc. China)Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
ColorsInfinite Black, Ultra Violet, Sand StormBlack, White, Pink, Red, Blue
Additional features—Ultra Wideband (UWB) support

Audio

Audio specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
LoudspeakersYes, with stereo speakersYes, with stereo speakers (3 speakers, with Dolby Atmos)
3.5 mm headphone jackNoNo
Audio features24-bit/192kHz Hi-Res audio24-bit/192kHz Hi-Res & Hi-Res wireless audio; Snapdragon sound

Regulatory

Regulatory specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
SAR (US)1.17 W/kg (head)     1.00 W/kg (body)—

EU label

EU label specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
EnergyClass A—
Battery74:25h endurance, 1100 cycles—
Free fallClass C (90 falls)—
RepairabilityClass B—

Tests

Tests specifications comparison
SpecificationOnePlus 15 5GXiaomi 18 Pro Max
Performance benchmarksAnTuTu: 2790237 (v10), 3688274 (v11) GeekBench: 11062 (v6) 3DMark: 7370 (Wild Life Extreme)—
Measured display brightness1364 nits max brightness (measured)—
Measured loudspeaker loudness-24.8 LUFS (Very good)—
Active use battery scoreActive use score 23:07h—

Similarities

  • Both are rated IP68.
  • Both have optical image stabilisation.
  • Both support Wi-Fi 7.
  • Both use Bluetooth 6.0.
  • Both have NFC.
  • Both have an aluminium frame.

In summary

Get the Xiaomi 18 Pro Max if you want a bigger battery and newer Android 17, or the OnePlus 15 5G if you would rather have smoother scrolling and faster charging.

Back to compared products ↑

In-stock alternatives

Samsung Galaxy S26 PlusFor OnePlus 15 5GSamsung Galaxy S26 PlusView product ↗Samsung Galaxy S25 UltraFor OnePlus 15 5GSamsung Galaxy S25 UltraView product ↗

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POCO F8 UltraXiaomi 18 Pro MaxXiaomi 17 Pro MaxXiaomi 18 Pro MaxXiaomi 15 UltraOnePlus Ace 5 ProXiaomi 15 UltraSamsung Galaxy S26 UltraOnePlus 15 5GSamsung Galaxy Z Fold 8

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