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Smartphone comparison

Xiaomi 15 Ultra vs Samsung Galaxy S27 Ultra

Compare cameras, battery, screen and everyday features.

Compared products
01Selected
Xiaomi 15 Ultra

Xiaomi 15 Ultra

  • About 120 Hz display refresh rate.
  • About 6.73 inch screen.
  • Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) processor.
  • Storage: UFS 4.1.
  • 90 W rated wired charging power.
KSh 142,000In Stock
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02
Samsung Galaxy S27 Ultra

Samsung Galaxy S27 Ultra

  • 6.9-inch OLED display, 120 Hz, 500 ppi.
  • Qualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 processor.
  • Up to 16 GB RAM.
  • Up to 1 TB storage.
  • 5,000 mAh battery.
KSh 123,000Out of Stock

Add to comparison

2 spaces available

Xiaomi 17 Pro MaxKSh 130,000
Xiaomi 17 UltraKSh 164,000
Google Pixel 10 Pro XLKSh 129,500
Samsung Galaxy S26 UltraKSh 124,000
Google Pixel 11 Pro XL 256GBKSh 133,000
Vivo X300 Pro 5GKSh 149,000
iPhone 17 ProKSh 155,000
2 of 4 products

Our quick verdict

The Xiaomi 15 Ultra has a bigger battery (5,410 mAh), charges faster (90 W), charges faster wirelessly (80 W) and has a brighter screen for outdoor use, while the Samsung Galaxy S27 Ultra runs newer Android 16 and has 7 promised OS upgrades, a larger 6.9-inch screen and a higher-resolution main camera (200 MP).

Display

Xiaomi 15 Ultra
6.73-inch OLED display, 120 Hz, 522 ppi
Samsung Galaxy S27 Ultra
6.9-inch OLED display, 120 Hz, 500 ppi

Performance

Xiaomi 15 Ultra
Qualcomm Snapdragon 8 Elite processor
Samsung Galaxy S27 Ultra
Qualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 processor

Battery capacity

Xiaomi 15 Ultra
5,410 mAh battery
Samsung Galaxy S27 Ultra
5,000 mAh battery

Charging

Xiaomi 15 Ultra
90 W wired, 80 W wireless charging
Samsung Galaxy S27 Ultra
60 W wired, 25 W wireless charging

Weight

Xiaomi 15 Ultra
226 g
Samsung Galaxy S27 Ultra
214 g

Key differences

The main differences to help you choose.

Xiaomi 15 Ultra

  • Bigger battery: 5,410 mAh (vs 5,000 mAh).
  • Faster rated wired charging: 90 W (vs 60 W).
  • Faster wireless charging: 80 W (vs 25 W).
  • Brighter display: up to 3,200 nits (vs 2,600).
  • Higher-resolution selfie camera: 32 MP (vs 12 MP).

Samsung Galaxy S27 Ultra

  • Higher-resolution main camera: 200 MP (vs 50 MP).
  • Larger 6.9-inch screen (vs 6.73-inch).
  • Newer Android 16 (vs Android 15).
  • More promised OS upgrades: 7 (vs 4).
  • Lighter: 214 g (vs 226 g).
  • Slimmer: 7.9 mm thick (vs 9.4 mm).

What matters most to you?

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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
PriorityXiaomi 15 UltraSamsung Galaxy S27 Ultra
Display6.73-inch OLED display, 120 Hz, 522 ppi6.9-inch OLED display, 120 Hz, 500 ppi
Camera50 MP main camera with OIS, plus a 3x telephoto camera200 MP main camera with OIS, plus a 3x telephoto camera
PerformanceQualcomm Snapdragon 8 Elite processorQualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 processor
Battery capacity5,410 mAh battery5,000 mAh battery
Charging90 W wired, 80 W wireless charging60 W wired, 25 W wireless charging
Weight226 g214 g

Detailed comparison

Explore the full specifications, section by section.

General

General specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
BrandXiaomiSamsung
Model15 Ultra—
Announced2025, February 27—
Release statusAvailable. Released 2025, February 27Pre-launch; official specifications pending
Model numbers25010PN30G—

Design

Design specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
Dimensions161.3 x 75.3 x 9.4 mm (6.35 x 2.96 x 0.37 in)163.6 x 78.1 x 7.9 mm (6.44 x 3.07 x 0.31 in)Unconfirmed pre-launch placeholder
Weight226 g or 229 g (7.97 oz)214 g (7.55 oz)Unconfirmed pre-launch placeholder
Build materialsGlass front, glass-fiber reinforced plastic back or silicone polymer back (eco leather), aluminum frameGlass front (Corning Gorilla Armor 2), glass back (Gorilla Glass Victus 2), aluminum frameUnconfirmed pre-launch placeholder
Additional body featuresAerospace-grade glass fiber—
Stylus support—Built-in stylus (S Pen)Unconfirmed pre-launch placeholder

Display

Display specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
Display6.73 inches, 108.9 cm2 (~89.7% screen-to-body ratio); LTPO AMOLED, 68B colors, 120Hz, 1920Hz PWM, Dolby Vision, HDR10+, HDR Vivid, 3200 nits (peak)6.9 inches; Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak)Unconfirmed pre-launch placeholder
Screen resolution1440 x 3200 pixels, 20:9 ratio (~522 ppi density)1440 x 3120 pixels, 19.5:9 ratio (~500 ppi density)Unconfirmed pre-launch placeholder
Display protectionXiaomi Shield Glass 2.0Corning Gorilla Armor 2, Mohs level 6Unconfirmed pre-launch placeholder
Display featuresLTPO AMOLED, 68B colors, 120Hz, 1920Hz PWM, Dolby Vision, HDR10+, HDR Vivid, 3200 nits (peak)DX anti-reflective coating; Privacy DisplayUnconfirmed pre-launch placeholder

Performance

Performance specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
ProcessorQualcomm SM8750-AB Snapdragon 8 Elite (3 nm)Qualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 (3 nm)Unconfirmed pre-launch placeholder
CPUOcta-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)Octa-core (2x4.74 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)Unconfirmed pre-launch placeholder
GPUAdreno 830Adreno 840 (1.3GHz)Unconfirmed pre-launch placeholder

Memory & Storage

Memory & Storage specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
RAM12GB / 16GB12GB (256GB/512GB); 16GB (1TB)Unconfirmed pre-launch placeholder
Storage256GB / 512GB / 1TB1TB, 256GB, 512GBUnconfirmed pre-launch placeholder
Storage technologyUFS 4.1UFS 4.XUnconfirmed pre-launch placeholder
Expandable storageNoNoUnconfirmed pre-launch placeholder
Memory configurations256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM—

Cameras

Cameras specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
Rear camera50 MP, f/1.6, 23mm (wide), 1.0"-type, 1.6µm, dual pixel PDAF, OIS 50 MP, f/1.8, 70mm (telephoto), 1/2.51", 0.7µm, dual pixel PDAF (10cm - ∞), OIS, 3x optical zoom 200 MP, f/2.6, 100mm (periscope telephoto), 1/1.4", 0.56µm, multi-directional PDAF, OIS, 4.3x optical zoom 50 MP, f/2.2, 14mm, 115˚ (ultrawide), 1/2.76", 0.64µm, dual pixel PDAF TOF 3D, (depth)200 MP, f/1.4, 23mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS 10 MP, f/2.4, 67mm (telephoto), 1/3.94", 1.0µm, PDAF, OIS, 3x optical zoom 50 MP, f/2.9, 111mm (periscope telephoto), 1/2.52", 0.7µm, PDAF, OIS, 5x optical zoom 50 MP, f/1.9, 120˚ (ultrawide), 1/2.5", 0.7µm, dual pixel PDAF, Super Steady videoUnconfirmed pre-launch placeholder
Front camera32 MP, f/2.0, 21mm (wide), 1/3.14", 0.7µm12 MP, f/2.2, 23mm (wide), 1/3.2", 1.12µm, dual pixel PDAFUnconfirmed pre-launch placeholder
Rear camera featuresLaser AF, color spectrum sensor, Leica lenses, Dual-LED flash, HDR, panorama, 67mm filter ring holder (optional)Laser AF, Best Face, Horizon Lock, LED flash, auto-HDR, panoramaUnconfirmed pre-launch placeholder
Rear camera video8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240/480/960/1920fps, gyro-EIS, Dolby Vision HDR 10-bit rec. (4K@60fps, 1080p)8K@24/30fps, 4K@30/60/120fps, 1080p@30/60/120/240fps, 10-bit HDR, HDR10+, stereo sound rec., gyro-EISUnconfirmed pre-launch placeholder
Front camera featuresHDR, panoramaHDR, HDR10+Unconfirmed pre-launch placeholder
Front camera video4K@30/60fps, 1080p@30/60fps, gyro-EIS4K@30/60fps, 1080p@30fpsUnconfirmed pre-launch placeholder

Battery & Charging

Battery & Charging specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
BatteryMarket-dependent versions: · Si/C Li-Ion 5410 mAh - Global · Si/C Li-Ion 6000 mAh - ChinaLi-Ion 5000 mAhUnconfirmed pre-launch placeholder
Charging90W wired, PD3.0, QC3+ 80W wireless 10W reverse wireless60W wired, PD3.0, 75% in 30 min 25W wireless (Qi2.2) 4.5W reverse wirelessUnconfirmed pre-launch placeholder

Software

Software specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
Operating systemAndroid 15, up to 4 major OS updates, HyperOS 3Android 16, up to 7 major OS updates, One UI 8.5Unconfirmed pre-launch placeholder

Network

Network specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
NetworkGSM / HSPA / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5GUnconfirmed pre-launch placeholder
SIM· Nano-SIM + Nano-SIM · Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)· Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time) - INT · Nano-SIM + eSIM + eSIM (max 2 at a time) - USA · Nano-SIM + Nano-SIM - CNUnconfirmed pre-launch placeholder
2G bandsGSM 850 / 900 / 1800 / 1900—
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100—
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 42, 48, 66, 71 - International; 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66 - China—
5G bands1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 48, 66, 71, 75, 77, 78, 79 SA/NSA - International; 1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 79, 80, 81, 83, 84, 89 SA/NSA - China—
Network speedHSPA, LTE, 5G—

Connectivity

Connectivity specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
NFCYesYesUnconfirmed pre-launch placeholder
Bluetooth6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 56.0, A2DP, LEUnconfirmed pre-launch placeholder
Wi-FiWi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi DirectUnconfirmed pre-launch placeholder
PositioningGPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASSGPS, GLONASS, BDS, GALILEO, QZSSUnconfirmed pre-launch placeholder
RadioNoNoUnconfirmed pre-launch placeholder
USBUSB Type-C 3.2 Gen 2, DisplayPort, OTGUSB Type-C 3.2, DisplayPort 1.2, OTGUnconfirmed pre-launch placeholder
Satellite featuresTwo-way satellite communication (China model only)—
InfraredYes—
Ultra Wideband (UWB)—Ultra Wideband (UWB) supportUnconfirmed pre-launch placeholder

Durability

Durability specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
Water resistanceIP68 dust tight and water resistant (immersible up to 1.5m for 30 min)IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)Unconfirmed pre-launch placeholder

Features

Features specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
SensorsFingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometerFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometerUnconfirmed pre-launch placeholder
ColorsBlack, White, Silver Chrome, Green—
Additional featuresTwo-way satellite communication (China model only)—
Desktop mode—Samsung DeX and Samsung Wireless DeXUnconfirmed pre-launch placeholder

Audio

Audio specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
LoudspeakersYes, with stereo speakersYes, with stereo speakersUnconfirmed pre-launch placeholder
3.5 mm headphone jackNoNoUnconfirmed pre-launch placeholder
Audio features24-bit/192kHz Hi-Res & Hi-Res Wireless audio; Qualcomm XPAN (24-bit/96kHz audio)High-bitrate audio supportUnconfirmed pre-launch placeholder

Regulatory

Regulatory specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
SAR (EU)1.00 W/kg (head)     1.00 W/kg (body)—

Tests

Tests specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
Measured loudspeaker loudness-24.1 LUFS (Very good)—
Active use battery scoreActive use score 16:13h—

EU label

EU label specifications comparison
SpecificationXiaomi 15 UltraSamsung Galaxy S27 Ultra
EnergyClass A—
Battery58:58h endurance, 1000 cycles—
Free fallClass C (90 falls)—
RepairabilityClass C—

Similarities

  • Both have 120 Hz displays.
  • Both are rated IP68.
  • Both have optical image stabilisation.
  • Both support Wi-Fi 7.
  • Both use Bluetooth 6.0.
  • Both have NFC.

In summary

Get the Xiaomi 15 Ultra if you want a bigger battery and faster charging, or the Samsung Galaxy S27 Ultra if you would rather have newer Android 16 and 7 promised OS upgrades.

Back to compared products ↑

In-stock alternatives

Xiaomi 17 Pro MaxFor Xiaomi 15 UltraXiaomi 17 Pro MaxView product ↗Google Pixel 10 Pro XLFor Xiaomi 15 UltraGoogle Pixel 10 Pro XLView product ↗Samsung Galaxy S26 UltraFor Samsung Galaxy S27 UltraSamsung Galaxy S26 UltraView product ↗Samsung Galaxy S24 UltraFor Samsung Galaxy S27 UltraSamsung Galaxy S24 UltraView product ↗

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