Home Phone comparison Xiaomi 15 Ultra and Xiaomi Redmi 9C - Which is better?

Xiaomi 15 Ultra vs Xiaomi Redmi 9C

95 out 100
Xiaomi 15 Ultra
VS
35 out 100
Xiaomi Redmi 9C
Xiaomi 15 Ultra
Xiaomi Redmi 9C

Compared 2 smartphones : Xiaomi 15 Ultra Manufactured in February, 2025, with display 6.73 with chipsetQualcomm Snapdragon 8 Elite, vs Xiaomi Redmi 9C, Manufactured in September, 2020 with chipsetMediaTek Helio G35. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Xiaomi 15 Ultra
  • Larger display: 6.73in
  • Higher pixel density: 522ppi
  • Higher refresh rate: 120Hz
  • Higher battery capacity: 5410mAh vs 5000mAh
  • Newer Bluetooth version: 6.0 vs 5
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Supports Dolby Atmos
  • Infrared port
  • Built-in eSIM
  • Includes charger
Reasons to choose Xiaomi Redmi 9C
  • Lighter design: 196g vs 226g

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 16/512 GB
- 16/1024 GB		 - 2/32 GB
- 2/64 GB
- 3/32 GB
- 3/64 GB
- 3/128 GB
- 4/128 GB

Review

Key Specs Xiaomi 15 Ultra and Xiaomi Redmi 9C
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Xiaomi 15 Ultra
vs
Xiaomi Redmi 9C

Display

Display quality comparison
Type AMOLED IPS LCD
Size 6.73 in 6.53 in
Resolution 1440x3200 pixels 720x1600 pixels
Aspect ratio 20:9 20:9
Pixel density 522 ppi 269 ppi
Refresh rate 120 Hz 60 Hz
Adaptive refresh rate Yes (1-120 Hz) No
Max brightness n/a 400 nits
HDR support Yes Dolby Vision No
Touch Sampling Rate 300 Hz n/a
Screen-to-body ratio 90 % 81.1 %
Features - DCI-P3
- Always-On Display
- DC dimming		 n/a
Display test
Peak brightness (auto)
Xiaomi 15 Ultra
1599 nits
Xiaomi Redmi 9C
413 nits
sRGB gamut99.7 %92.9 %
PWM (Flicker)120 Hz17120 Hz
Response time1 ms47 ms
Contrast∞ Infinite881:1
Sources: NotebookCheck [Xiaomi 15 Ultra], [Xiaomi Redmi 9C]

Design & Build

Design and ergonomics comparison
Height 161.3 mm (6.35 in) 164.9 mm (6.49 in)
Width 75.3 mm (2.96 in) 77 mm (3.03 in)
Thickness 9.35 mm (0.37 in) 9 mm (0.35 in)
Weight 226 g (7.97 oz) 196 g (6.91 oz)
Water resistance IP68 No
Cooling system Vapor chamber n/a
Back panel Glass Plastic
Frame Metal Plastic
Colors - White
- Black
- Silver
- Green		 - Gray
- Blue
- Green
- Purple
Fingerprint sensor Yes In-Display Yes rear
Screen-to-body ratio
Xiaomi 15 Ultra
90 %
Xiaomi Redmi 9C
81.1 %

Performance

Testing Xiaomi 15 Ultra and Xiaomi Redmi 9C In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite MediaTek Helio G35
Max Frequency 4320 MHz 2300 MHz
CPU Cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))		 - 4/1.8 (Cortex-A53)
- 4/2.3 (Cortex-A53)
Process TSMC TSMC
Transistor Size 3 nm 12 nm
Neural Processor Hexagon No
Graphics Adreno 830 PowerVR GE8320
GPU Cores 1536 32
GPU Frequency 1100 MHz 680 MHz
FLOPS 3379.2 GFLOPS 43.5 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi 15 Ultra
3008
Xiaomi Redmi 9C
479
Geekbench 6 (Multi-Core)
Xiaomi 15 Ultra
9065
Xiaomi Redmi 9C
1522
Geekbench 6 (Single-Core)3008479
Geekbench 6 (Multi-Core)90651522
Sources: Geekbench v6 [Xiaomi 15 Ultra]
AnTuTu 10
AnTuTu 10
Xiaomi 15 Ultra
2544373
Xiaomi Redmi 9C
141956
CPU55858654580
GPU104016117708
Memory52030037174
UX42532632494
NanoReview Score2544373141956

Memory

RAM
RAM Size 12 GB - 2 GB
- 3 GB
- 4 GB
Memory Type LPDDR5X LPDDR4X
Memory Frequency 5333 MHz n/a
Channels 2 2
Storage
Storage Capacity256 GB- 32 GB
- 64 GB
- 128 GB
Storage TypeUFS 4.1eMMC 5.1
Memory CardNoMicroSD

Software

OS Android 15 Android 10 (Upgradeable to Android 11)
OS Size 23.9 GB 18 GB
UI Skin HyperOS 2.0 MIUI 12

Battery

Volume 5410 mAh 5000 mAh
Max Charging Power 90 W 10 W
Battery Type Silicon Carbon (Si/C) Li-Po
Removable No No
Wireless Charging Yes (80 W) No
Reverse Charging Yes (Wireless) No
Fast Charging Yes (72% in 30 min) No
Full Charge Time 0:51 h 2:59 h
Battery Life Test
Battery Life
Xiaomi 15 Ultra
30:03
Xiaomi Redmi 9C
n/a
Web Browsing12:19 hn/a
Video Playback18:43 hn/a
Games06:45 hn/a
Standby Mode141 hn/a

Main camera

Matrix 50 MP 13 MP
Photo resolution 8192x6144 pixels 4128x3096 pixels
Zoom Optical, 4.3x Digital
Flash Dual LED LED
Stabilization Optical Digital
8K Recording Yes (Up to 30 fps) No
4K Recording Yes (Up to 120 fps) No
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 1920 fps (1080p) No
Wide-angle lens 115 ° n/a
Lenses count Standard: 50 MP
Telephoto: 200 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Depth		 Standard: 13 MP
Macro: 2 MP
Features - Bokeh effect
- Pro mode
- RAW support		 Bokeh effect
Main lens
Matrix50 MP13 MP
Aperturef/1.63f/1.8
Focal length23 mm28 mm
SensorSony LYT-900n/a
Sensor size1/1.01/3.1
Pixel size1.6 μm1.12 μm
AutofocusLaser autofocusPhase autofocus
StabilizationOpticalDigital
Telephoto
Matrix200 MPn/a
Aperturef/2.6n/a
Focal length100 mmn/a
SensorSamsung ISOCELL S5KHP9n/a
Sensor size1/1.4n/a
Pixel size0.56 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix50 MPn/a
Aperturef/2.2n/a
Focal length14 mmn/a
SensorSamsung S5KJN5n/a
Sensor size1/2.76n/a
Pixel size0.64 μmn/a
StabilizationDigitaln/a
Main camera DxOMark results
Photo quality
Xiaomi 15 Ultra
158
Xiaomi Redmi 9C
n/a
Video quality
Xiaomi 15 Ultra
134
Xiaomi Redmi 9C
n/a
Overall camera score
Xiaomi 15 Ultra
153
Xiaomi Redmi 9C
n/a
Bokeh80n/a
Preview89n/a
Sources: DxOMark [Xiaomi 15 Ultra]

Front camera

Matrix 32 MP 5 MP
Photo resolution 6528x4896 pixels 2560x1960 pixels
Aperture f/2.0 f/2.2
Focal length 22 mm n/a
Sensor Omnivision OV32B CMOS
Sensor size 1/3.14 n/a
Pixel size 0.7 μm 1.12 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) Wi-Fi 4 (802.11 a/b/g/n)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 6.0 5
Bluetooth features LE LE, HID, A2DP
USB type USB Type-C Micro USB
USB version 3.2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort Yes n/a
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
- NAVIC		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port Yes No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G BandsGSM 2/3/5/8GSM B2/3/5/8
3G BandsWCDMA 1/2/4/5/6/8/19WCDMA B1/2/4/5/8
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B17/B18/B19/B20/B26/B28/B34/B38/B39/B40/B41/B42/B48/B66)LTE (B1/B2/B3/B4/B5/B7/B8/B20)
LTE categoryn/a4
5G SupportYesNo

Sound

Speakers n/a Mono
3.5 mm Jack No Yes
FM Radio No Yes
Dolby Atmos Yes No
Speaker Test
Max Volume
Xiaomi 15 Ultra
92.1 dB
Xiaomi Redmi 9C
77.7 dB

Other

Class Flagship Budget
Announced February, 2025 yr June, 2020 yr
Release Date February, 2025 yr September, 2020 yr
Launch Price ($) n/a 110
MSRP ($) 1099 n/a
Sensors - Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Accelerometer
- Ambient Light Sensor
- Fingerprint sensor
Charger Included Yes 90 W n/a

Note

Xiaomi 15 Ultra:

The Chinese version of the Xiaomi 15 Ultra has a 6000 mAh battery, while the international model comes with 5410 mAh, leading to a noticeable difference in battery life.

* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Xiaomi 15 Ultra the clear winner in this comparison.

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