Home Phone comparison Xiaomi 15 Ultra and Xiaomi Redmi 12C - Which is better?

Xiaomi 15 Ultra vs Xiaomi Redmi 12C

95 out 100
Xiaomi 15 Ultra
VS
40 out 100
Xiaomi Redmi 12C
Xiaomi 15 Ultra
Xiaomi Redmi 12C

Compared 2 smartphones : Xiaomi 15 Ultra Manufactured in February, 2025, with display 6.73 with chipsetQualcomm Snapdragon 8 Elite, vs Xiaomi Redmi 12C, Manufactured in January, 2023 with chipsetMediaTek Helio G85. 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 5.1
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Supports Dolby Atmos
  • Infrared port
  • Built-in eSIM
Reasons to choose Xiaomi Redmi 12C
  • Lighter design: 192g vs 226g

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 16/512 GB
- 16/1024 GB		 - 2/32 GB
- 3/32 GB
- 3/64 GB
- 3/128 GB
- 4/32 GB
- 4/64 GB
- 4/128 GB
- 6/128 GB

Review

Key Specs Xiaomi 15 Ultra and Xiaomi Redmi 12C
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 12C

Display

Display quality comparison
Type AMOLED IPS LCD
Size 6.73 in 6.71 in
Resolution 1440x3200 pixels 720x1650 pixels
Aspect ratio 20:9 20.6:9
Pixel density 522 ppi 268 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 % 82.6 %
Features - DCI-P3
- Always-On Display
- DC dimming		 n/a
Display test
Peak brightness (auto)
Xiaomi 15 Ultra
1599 nits
Xiaomi Redmi 12C
396 nits
sRGB gamut99.7 %96.1 %
PWM (Flicker)120 Hzn/a
Response time1 ms30 ms
Contrast∞ Infinite1191:1
Sources: NotebookCheck [Xiaomi 15 Ultra], [Xiaomi Redmi 12C]

Design & Build

Design and ergonomics comparison
Height 161.3 mm (6.35 in) 168.76 mm (6.64 in)
Width 75.3 mm (2.96 in) 76.41 mm (3.01 in)
Thickness 9.35 mm (0.37 in) 8.77 mm (0.35 in)
Weight 226 g (7.97 oz) 192 g (6.77 oz)
Water resistance IP68 No
Cooling system Vapor chamber n/a
Back panel Glass Plastic
Frame Metal Plastic
Colors - White
- Black
- Silver
- Green		 - Black
- Blue
- Green
- Purple
Fingerprint sensor Yes In-Display Yes rear
Screen-to-body ratio
Xiaomi 15 Ultra
90 %
Xiaomi Redmi 12C
82.6 %

Performance

Testing Xiaomi 15 Ultra and Xiaomi Redmi 12C In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite MediaTek Helio G85
Max Frequency 4320 MHz 2000 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))		 - 6/1.8 (Cortex-A55)
- 2/2 (Cortex-A75)
Process TSMC TSMC
Transistor Size 3 nm 12 nm
Neural Processor Hexagon Yes
Graphics Adreno 830 Mali-G52 MP2
GPU Cores 1536 48
GPU Frequency 1100 MHz 1000 MHz
FLOPS 3379.2 GFLOPS 96 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi 15 Ultra
3008
Xiaomi Redmi 12C
407
Geekbench 6 (Multi-Core)
Xiaomi 15 Ultra
9065
Xiaomi Redmi 12C
1269
Geekbench 6 (Single-Core)3008407
Geekbench 6 (Multi-Core)90651269
Sources: Geekbench v6 [Xiaomi 15 Ultra]
AnTuTu 10
AnTuTu 10
Xiaomi 15 Ultra
2544373
Xiaomi Redmi 12C
267015
CPU55858682825
GPU104016142471
Memory52030070316
UX42532671403
NanoReview Score2544373267015
3DMark Wild Life
3DMark Wild Life
Xiaomi 15 Ultra
n/a
Xiaomi Redmi 12C
725
Max Surface Temp.n/a45.8 °C
Stabilityn/a97 %
Graphics Testn/a4 fps
Graphics Scoren/a725
Sources: 3DMark [Xiaomi Redmi 12C]
PCMark 3.0
PCMark 3.0
Xiaomi 15 Ultra
n/a
Xiaomi Redmi 12C
8529
Writing scoren/a9971
Web scoren/a7250
Video editingn/a6271
Data manipulationn/a5540
NanoReview Scoren/a8529

Memory

RAM
RAM Size 12 GB - 3 GB
- 4 GB
- 6 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 12
OS Size 23.9 GB 13 GB
UI Skin HyperOS 2.0 MIUI 13

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 2:05 h
Battery Life Test
Battery Life
Xiaomi 15 Ultra
30:03
Xiaomi Redmi 12C
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 50 MP
Photo resolution 8192x6144 pixels 8150x6150 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) n/a
Wide-angle lens 115 ° n/a
Lenses count Standard: 50 MP
Telephoto: 200 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Depth		 Standard: 50 MP
Depth: 0.1 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
Main lens
Matrix50 MP50 MP
Aperturef/1.63f/1.8
Focal length23 mmn/a
SensorSony LYT-900n/a
Sensor size1/1.01/2.76
Pixel size1.6 μmn/a
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 12C
n/a
Video quality
Xiaomi 15 Ultra
134
Xiaomi Redmi 12C
n/a
Overall camera score
Xiaomi 15 Ultra
153
Xiaomi Redmi 12C
n/a
Bokeh80n/a
Preview89n/a
Sources: DxOMark [Xiaomi 15 Ultra]

Front camera

Matrix 32 MP 5 MP
Photo resolution 6528x4896 pixels 2592x1944 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 n/a
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 5 (802.11 a/b/g/n/ac)
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 5.1
Bluetooth features LE LE
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 Varies by region
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 B1/5/8
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/B3/B5/B8/B34/B38/B39/B40/B41)
LTE categoryn/a7
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 12C
79.7 dB

Other

Class Flagship Budget
Announced February, 2025 yr December, 2022 yr
Release Date February, 2025 yr January, 2023 yr
Launch Price ($) n/a 150
MSRP ($) 1099 n/a
Sensors - Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Accelerometer
- Fingerprint sensor
Charger Included Yes 90 W Yes 10 W

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.

Survey

Which smartphone would you pick?
0 (0%)
0 (0%)
Total Votes: 0

User comments

Share your opinion or ask questions below