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Lab Benchmark Battle

Xiaomi Mi 11 Ultra vs Oppo K15 5G

Direct side-by-side battle analyzing display brightness, chipset benchmark percentiles, multi-camera arrays, battery capacity, and charging speeds.

Smartphone Battle
Comparing 2 devicesSwipe across ⇄
Xiaomi · 2021

Xiaomi Mi 11 Ultra

Xiaomi Mi 11 Ultra
86/ 100
Launch MSRP$1,199 USD
Oppo

Oppo K15 5G

Oppo K15 5G
86/ 100
Launch MSRPPricing on request
WHO WINS WHERE

WHY IS Xiaomi Mi 11 Ultra BETTER THAN Oppo K15 5G?

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Xiaomi Mi 11 UltraWinner 🏆
Oppo K15 5G

BIGGEST HARDWARE DIFFERENCES

Margin Delta
SPEC FACTORXiaomi MiOppo K15LEADER
Refresh Rate120Hz120Hz120Hz
Battery Capacity5,000 mAh8,000 mAh+8,000 mAh
Wired Fast Charging67WStandard67W Max
Main Camera Sensor50 MP50 MP50 MP
Screen Display Size6.81"6.59"6.81"
Chassis Weight234gN/A234g Lightest
Compare All 177+ Specifications Below↓

Which Phone Should You Buy: Key Reasons & Hardware Advantages

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Reasons to buy Xiaomi Mi 11 Ultra:
  • ✓765g lighter chassis (234g) optimized for one-handed ergonomics
  • ✓$8800 lower launch MSRP ($1199 vs $9999)
  • ✓50MP primary camera sensor with 4K/120fps video recording
Reasons to buy Oppo K15 5G:
  • ✓Larger 8,000 mAh battery capacity (+3,000 mAh more capacity)
  • ✓50MP primary camera sensor with 4K/120fps video recording
  • ✓6.59" display with 120Hz ProMotion refresh rate

How Do the Specifications Compare Side-by-Side?

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SpecificationXiaomi Mi 11 UltraOppo K15 5G
1. Display & Screen🏆 Xiaomi Mi 11 Ultra Wins Display
Screen Type & TechAMOLEDAMOLED
Screen Size6.81"6.59"
Resolution & Density3200x1440 (515 ppi)FHD+ / LTPO AMOLED
Refresh Rate120 Hz ProMotion120 Hz ProMotion
Brightness1,700 nits peakN/A
Screen ProtectionScratch-resistant glassScratch-resistant glass
2. Platform & Performance🏆 Xiaomi Mi 11 Ultra Wins Performance
Chipset / ProcessorHigh performance SoC Dimensity 7360 Super
CPU CoresMulti-core high performanceMulti-core high performance
GPU GraphicsIntegrated GraphicsIntegrated Graphics
Operating SystemAndroid 11Android
3. Memory & Storage
RAM Memory12 GB LPDDR12 GB LPDDR
Internal Storage256GB / 512GB256 GB
Storage SpeedHigh-speed flashHigh-speed flash
Card SlotNoNo
4. Main Camera Optics🏆 Xiaomi Mi 11 Ultra Wins Camera
Primary Camera50 MP, f/2, OIS, Samsung GN250 MP, Triple Camera System
Telephoto Zoom48 MP (5x optical zoom), f/4.1, OISNone (Digital zoom only)
Ultrawide Camera48 MP, f/2.2N/A
LiDAR / DepthNoneNone
5. Video Recording Capabilities
Main Camera Video
4K@60fps1080p@240fpsHDR
4K@60fps1080p@240fpsHDR
Front Video
4K@60fps1080p@60fpsgyro-EIS
4K@60fps1080p@60fpsgyro-EIS
6. Selfie Camera
Selfie Lens20 MP, f/2.212 MP
7. Body & Dimensions🏆 Xiaomi Mi 11 Ultra Lightest Chassis
Dimensions163.18 x 74.6 x 8.38 mmN/A
Weight234 gN/A
Build MaterialsGlass front, metal/glass frameGlass front, metal/glass frame
SIM TypeNano-SIM / eSIM supportNano-SIM / eSIM support
Water ResistanceIP68Not certified
8. Battery & Charging🏆 Oppo K15 5G Wins Battery
Battery Capacity5,000 mAh8,000 mAh
Wired Fast Charging67W wired fast chargingFast charging
Wireless Charging67W wireless chargingNot supported
Reverse ChargingReverse wireless chargingReverse wireless charging
9. Sound & Audio
LoudspeakerStereo speakersStereo speakers
3.5mm Headphone JackNoNo
10. Connectivity & Comms
Wi-Fi StandardWi-Fi 6EWi-Fi 7 / 6E tri-band
Bluetooth5.2Bluetooth 5.3+
USB Port & SpeedUSB-C 3.2USB Type-C
NFCYes (contactless payment)Yes
11. Sensors & Security
SensorsBiometric fingerprint/face, accelerometer, gyro, compassBiometric fingerprint/face, accelerometer, gyro, compass
Satellite FeaturesEmergency SOS via satellite (select markets)Emergency SOS via satellite (select markets)
12. Colors & Overview
ColorsStandard finishesStandard finishes
Launch Price$1199Price on request
Editorial Lab Verdict

Xiaomi Mi 11 Ultra edges ahead with a BeastScore of 86.0/100

After comprehensive hardware benchmark comparisons, Xiaomi Mi 11 Ultra ranks as the overall top pick in this matchup. Key differentiators include its advanced processor architecture and verified 91/100 camera rating.

When to buy Xiaomi Mi 11 Ultra:
Higher overall BeastScore: 86.0 vs top rival 85.9 · Significantly faster wired charging: 67W vs max 0W
When to buy Oppo K15 5G:
Larger battery capacity: 8,000 mAh (+3,000 mAh more)
Quick Answers

Frequently Asked Questions: Xiaomi Mi 11 Ultra vs Oppo K15 5G

Which phone is better: Xiaomi Mi 11 Ultra or Oppo K15 5G?

Xiaomi Mi 11 Ultra leads with an overall BeastScore of 86.0/100 compared to Oppo K15 5G (85.9/100), driven by advantages in Higher overall BeastScore: 86.0 vs top rival 85.9 and Significantly faster wired charging: 67W vs max 0W.

What are the primary battery and display differences between Xiaomi Mi 11 Ultra and Oppo K15 5G?

Xiaomi Mi 11 Ultra is equipped with a 6.81-inch display and 5000 mAh battery, while Oppo K15 5G features a 6.59-inch display and 8000 mAh battery.

How do the camera capabilities compare between Xiaomi Mi 11 Ultra and Oppo K15 5G?

In lab hardware evaluations, Xiaomi Mi 11 Ultra scores 91/100 in camera performance, while Oppo K15 5G scores 80/100.

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