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Smartphone comparison

Poco F9 Ultra vs Xiaomi 15

Compare cameras, battery, screen and everyday features.

Compared products
01Selected
Poco F9 Ultra

Poco F9 Ultra

  • 235 g.
  • About 185 Hz display refresh rate.
  • About 6.9 inch screen.
  • Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm) processor.
  • 12 GB RAM in this version.
KSh 106,000Out of Stock
02
Xiaomi 15

Xiaomi 15

  • About 120 Hz display refresh rate.
  • About 6.36 inch screen.
  • Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) processor.
  • Storage: UFS 4.0.
  • 90 W rated wired charging power.
KSh 104,000In Stock
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POCO F8 UltraKSh 106,000
POCO F7 UltraKSh 78,000
Honor 600 Pro 5GKSh 100,000
OnePlus 15 5GKSh 111,000
Google Pixel 9 Pro XLKSh 109,000
Google Pixel 11 256GBKSh 101,000
Samsung Galaxy S26 PlusKSh 116,000
2 of 4 products

Our quick verdict

The Poco F9 Ultra has a much bigger battery (8,050 mAh) and a larger 6.9-inch, brighter screen, scrolls more smoothly (185 Hz) and runs newer Android 16, while the Xiaomi 15 has a sharper screen and is lighter (192 g).

Refresh

Poco F9 Ultra
About 185 Hz display refresh rate
Xiaomi 15
About 120 Hz display refresh rate

Display

Poco F9 Ultra
About 6.9 inch screen
Xiaomi 15
About 6.36 inch screen

Performance

Poco F9 Ultra
Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm) processor
Xiaomi 15
Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) processor

Storage

Poco F9 Ultra
UFS 4.1
Xiaomi 15
UFS 4.0

Charging

Poco F9 Ultra
100 W rated wired charging power
Xiaomi 15
90 W rated wired charging power

Key differences

The main differences to help you choose.

Poco F9 Ultra

  • Bigger battery: 8,050 mAh (vs 5,240 mAh).
  • Smoother 185 Hz display (vs 120 Hz).
  • Higher-resolution main camera: 200 MP (vs 50 MP).
  • Larger 6.9-inch screen (vs 6.36-inch).
  • Newer Android 16 (vs Android 15).
  • Brighter display: up to 4,500 nits (vs 3,200).

Xiaomi 15

  • Sharper screen: 460 ppi (vs 416 ppi).
  • Lighter: 192 g (vs 235 g).

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
PriorityPoco F9 UltraXiaomi 15
Display6.9-inch OLED display, 185 Hz, 416 ppi6.36-inch OLED display, 120 Hz, 460 ppi
Camera200 MP main camera with OIS, plus a 5x telephoto camera50 MP main camera with OIS, plus a 2.6x telephoto camera
PerformanceQualcomm Snapdragon 8 Elite Gen 5 processorQualcomm Snapdragon 8 Elite processor
Storage256 GB storageUp to 1 TB storage
Battery capacity8,050 mAh battery5,240 mAh battery
Charging100 W wired, 50 W wireless charging90 W wired, 50 W wireless charging

Detailed comparison

Explore the full specifications, section by section.

General

General specifications comparison
SpecificationPoco F9 UltraXiaomi 15
BrandPOCOXiaomi
ModelF9 Ultra15
Announced2026, September 012024, October 29
Release statusAvailable. Released 2026, September 01Available. Released 2024, October 29
Model numbers26077PC53G24129PN74G, 24129PN74I, 24129PN74C

Design

Design specifications comparison
SpecificationPoco F9 UltraXiaomi 15
Dimensions163.5 x 77.9 x 8.7 mm (6.44 x 3.07 x 0.34 in)152.3 x 71.2 x 8.1 / 8.4 / 8.5 mm
Weight235 g (8.29 oz)189 / 191 / 192 g (6.67 oz)
Build materialsGlass front (Gorilla Glass 7i), aluminum frame, glass-fiber reinforced plastic backGlass front (Xiaomi Shield Glass), aluminum frame (6M42)

Display

Display specifications comparison
SpecificationPoco F9 UltraXiaomi 15
Display6.9 inches, 116.6 cm2 (~91.6% screen-to-body ratio); AMOLED, 68B colors, 185Hz, Dolby Vision, HDR10+, 850 nits (typ), 2200 nits (HBM), 4500 nits (peak)6.36 inches, 97.6 cm2 (~90.0% screen-to-body ratio); LTPO AMOLED, 68B colors, 1920Hz PWM, 120Hz, Dolby Vision, HDR10+, 3200 nits (peak)
Screen resolution1200 x 2608 pixels, 19.5:9 ratio (~416 ppi density)1200 x 2670 pixels, 20:9 ratio (~460 ppi density)
Display protectionCorning Gorilla Glass 7iXiaomi Shield Glass
Display featuresAMOLED, 68B colors, 185Hz, Dolby Vision, HDR10+, 850 nits (typ), 2200 nits (HBM), 4500 nits (peak); 10000 nits (peak) in HDR videos onlyLTPO AMOLED, 68B colors, 1920Hz PWM, 120Hz, Dolby Vision, HDR10+, 3200 nits (peak)

Performance

Performance specifications comparison
SpecificationPoco F9 UltraXiaomi 15
ProcessorQualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm)
CPUOcta-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)Octa-core (2x4.32 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M)
GPUAdreno 840Adreno 830

Memory & Storage

Memory & Storage specifications comparison
SpecificationPoco F9 UltraXiaomi 15
RAM12GB12GB / 16GB
Storage256GB256GB / 512GB / 1TB
Storage technologyUFS 4.1UFS 4.0
Expandable storageNoNo
Memory configurations256GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM

Cameras

Cameras specifications comparison
SpecificationPoco F9 UltraXiaomi 15
Rear camera200 MP, f/1.7, 24mm (wide), 1/1.56", 0.5µm, PDAF, OIS 50 MP, f/3.0, 114mm (periscope telephoto), 1/2.76", 0.64µm, PDAF, OIS, 5x optical zoom 50 MP, f/2.4, 17mm, 102˚ (ultrawide), 1/2.88", 0.61µm50 MP, f/1.6, 23mm (wide), 1/1.31", 1.2µm, dual pixel PDAF, OIS 50 MP, f/2.0, 60mm (telephoto), 1/2.76", 0.64µm, PDAF (10cm - ∞), OIS, 2.6x optical zoom 50 MP, f/2.2, 14mm, 115˚ (ultrawide), 1/2.76", 0.64µm
Front camera32 MP, f/2.2, 22mm (wide), 1/3.4", 0.61µm32 MP, f/2.0, 21mm (wide), 1/3.14", 0.7µm
Rear camera featuresColor spectrum sensor, LED flash, HDR, panoramaLaser AF, color spectrum sensor, Leica lens, Dual-LED dual-tone flash, HDR, panorama
Rear camera video8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960/1920fps, gyro-EIS, HDR10+8K@24/30fps (HDR), 4K@24/30/60fps (HDR10+, 10-bit Dolby Vision HDR, 10-bit LOG), 1080p@30/60/120/240/960fps, 720p@1920fps, gyro-EIS
Front camera featuresHDRHDR, panorama
Front camera video4K@30fps, 1080p@30/60fps4K@30/60fps, 1080p@30/60fps, HDR10+, gyro-EIS

Battery & Charging

Battery & Charging specifications comparison
SpecificationPoco F9 UltraXiaomi 15
BatterySi/C Li-Ion 8050 mAh· Si/C Li-Ion 5240 mAh - Global · Si/C Li-Ion 5400 mAh - China
Charging100W wired, PD3.0, QC3+, 100W PPS, 100% in 50 min 50W wireless, 50% in 37 min 27W reverse wired 22.5W reverse wireless90W wired, PD3.0, QC3+ 50W wireless 10W reverse wireless

Software

Software specifications comparison
SpecificationPoco F9 UltraXiaomi 15
Operating systemAndroid 16, up to 4 major OS updates, HyperOS 3Android 15, up to 4 major OS updates, HyperOS 2

Network

Network specifications comparison
SpecificationPoco F9 UltraXiaomi 15
NetworkGSM / HSPA / LTE / 5GGSM / HSPA / LTE / 5G
SIMNano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)· Nano-SIM + Nano-SIM · Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time)
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 38, 40, 41, 42, 48, 661, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 42, 48, 66 - 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, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 48, 66, 75, 77, 78 SA/NSA - International; 1, 2, 3, 5, 12, 20, 26, 28, 38, 40, 41, 48, 66, 77, 78, 80, 81, 83, 84, 89 SA/NSA - China
Network speedHSPA, LTE, 5GHSPA, LTE, 5G

Connectivity

Connectivity specifications comparison
SpecificationPoco F9 UltraXiaomi 15
NFCYes (market/region dependent)Yes
Bluetooth6.0, A2DP, LE, AptX HD, AptX Adaptive, LHDC 5.0, ASHA, MIHC, Auracast5.4/6.0, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Wi-FiWi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band or tri-band, Wi-Fi Direct
PositioningGPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASSGPS (L1+L5), GLONASS (G1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5)
RadioNoNo
USBUSB Type-C 3.2, OTG, video outputUSB Type-C 3.2, Display Port, OTG
InfraredYesYes

Durability

Durability specifications comparison
SpecificationPoco F9 UltraXiaomi 15
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)

Features

Features specifications comparison
SpecificationPoco F9 UltraXiaomi 15
SensorsFingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compassFingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer
ColorsBlack, Dark CherryBlack, White, Liquid Silver, Green, Lilac

Audio

Audio specifications comparison
SpecificationPoco F9 UltraXiaomi 15
LoudspeakersYes, with stereo speakers (with Dolby Atmos)Yes, with stereo speakers
3.5 mm headphone jackNoNo
Audio featuresTuned by Bose; Bose 2.1 stereo sound system with a woofer; 24-bit/192kHz Hi-Res & Hi-Res wireless audio24-bit/192kHz Hi-Res & Hi-Res wireless audio; Qualcomm XPAN (24-bit/96kHz audio)

Tests

Tests specifications comparison
SpecificationPoco F9 UltraXiaomi 15
Performance benchmarksGeekBench: 10500 (v6)AnTuTu: 2534638 (v10) GeekBench: 9419 (v6) 3DMark: 5980 (Wild Life Extreme)
Measured display brightness1283 nits max brightness (measured)1517 nits max brightness (measured)
Measured loudspeaker loudness-26.1 LUFS (Good)-25.7 LUFS (Very good)
Active use battery scoreActive use score 24:35hActive use score 16:28h

EU label

EU label specifications comparison
SpecificationPoco F9 UltraXiaomi 15
EnergyClass AClass A
Battery80:44h endurance, 1000 cycles63:26h endurance, 1000 cycles
Free fallClass C (90 falls)Class C (90 falls)
RepairabilityClass CClass C

Regulatory

Regulatory specifications comparison
SpecificationPoco F9 UltraXiaomi 15
SAR (EU)—0.99 W/kg (head)     1.00 W/kg (body)

Similarities

  • Both are rated IP68.
  • Both have optical image stabilisation.
  • Both support Wi-Fi 7.
  • Both have NFC.
  • Both have an aluminium frame.
  • Both have stereo speakers.

In summary

For most buyers the Poco F9 Ultra is the better buy; the Xiaomi 15 makes sense if you want a sharper screen.

Back to compared products ↑

In-stock alternatives

POCO F8 UltraFor Poco F9 UltraPOCO F8 UltraView product ↗iPhone 16 PlusFor Poco F9 UltraiPhone 16 PlusView product ↗Honor 600 Pro 5GFor Xiaomi 15Honor 600 Pro 5GView product ↗OnePlus 15 5GFor Xiaomi 15OnePlus 15 5GView product ↗

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