Home Phone comparison Xiaomi Mi 9 and Xiaomi Redmi 15 5G - Which is better?

Xiaomi Mi 9 vs Xiaomi Redmi 15 5G

50 out 100
Xiaomi Mi 9
VS
61 out 100
Xiaomi Redmi 15 5G
Xiaomi Mi 9
Xiaomi Redmi 15 5G

Compared 2 smartphones : Xiaomi Mi 9 Manufactured in April, 2019, with display 6.39 with chipsetQualcomm Snapdragon 855, vs Xiaomi Redmi 15 5G, Manufactured in August, 2025 with chipsetQualcomm Snapdragon 6s Gen 3. 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 Mi 9
  • Higher pixel density: 403ppi
  • Lighter design: 173g vs 224g
Reasons to choose Xiaomi Redmi 15 5G
  • Larger display: 6.9in
  • Higher refresh rate: 144Hz
  • Higher battery capacity: 7000mAh vs 3300mAh
  • Newer Bluetooth version: 5.1 vs 5
  • Includes charger

Versions

Available versions and configurations
Memory Options - 6/64 GB
- 6/128 GB
- 8/64 GB
- 8/128 GB
- 8/256 GB		 - 4/128 GB
- 6/128 GB
- 8/256 GB

Review

Key Specs Xiaomi Mi 9 and Xiaomi Redmi 15 5G
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 Mi 9
vs
Xiaomi Redmi 15 5G

Display

Display quality comparison
Type AMOLED IPS LCD
Size 6.39 in 6.9 in
Resolution 1080x2340 pixels 1080x2340 pixels
Aspect ratio 19.5:9 19.5:9
Pixel density 403 ppi 374 ppi
Refresh rate 60 Hz 144 Hz
Adaptive refresh rate No Yes
Max brightness 600 nits n/a
HDR support Yes HDR10 No
Screen-to-body ratio 85.3 % 83.1 %
Features - Always-On Display
- DC dimming		 n/a
Display test
Peak brightness (auto)
Xiaomi Mi 9
619 nits
Xiaomi Redmi 15 5G
n/a
sRGB gamut95.4 %n/a
PWM (Flicker)245 Hzn/a
Response time4.2 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Xiaomi Mi 9]

Design & Build

Design and ergonomics comparison
Height 157.5 mm (6.2 in) 171.1 mm (6.74 in)
Width 74.6 mm (2.94 in) 82.1 mm (3.23 in)
Thickness 7.6 mm (0.3 in) 8.6 mm (0.34 in)
Weight 173 g (6.1 oz) 224 g (7.9 oz)
Water resistance No IP64
Back panel Glass Plastic
Frame Metal Plastic
Colors - Black
- Blue
- Purple		 - Black
- Gray
- Green
Fingerprint sensor Yes In-Display Yes, In-Button
Screen-to-body ratio
Xiaomi Mi 9
85.3 %
Xiaomi Redmi 15 5G
83.1 %

Performance

Testing Xiaomi Mi 9 and Xiaomi Redmi 15 5G In benchmarks
Processor
Chipset Qualcomm Snapdragon 855 Qualcomm Snapdragon 6s Gen 3
Max Frequency 2840 MHz 2300 MHz
CPU Cores 8 (1 + 3 + 4) 8 (2 + 6)
Architecture - 4/1.8 (Cortex-A55 (Kryo 485 Silver))
- 3/2.42 (Cortex-A76 (Kryo 485 Gold))
- 1/2.84 (Cortex-A76 (Kryo 485 Gold))		 - 6/2 (Cortex-A55)
- 2/2.3 (Cortex-A78)
Process TSMC TSMC
Transistor Size 7 nm 6 nm
Neural Processor Hexagon 690 Hexagon
Graphics Adreno 640 Adreno 619
GPU Cores 768 256
GPU Frequency 585 MHz 900 MHz
FLOPS 898.5 GFLOPS 460.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi Mi 9
898
Xiaomi Redmi 15 5G
935
Geekbench 6 (Multi-Core)
Xiaomi Mi 9
2206
Xiaomi Redmi 15 5G
2109
Geekbench 6 (Single-Core)898935
Geekbench 6 (Multi-Core)22062109
AnTuTu 10
AnTuTu 10
Xiaomi Mi 9
651041
Xiaomi Redmi 15 5G
473154
CPU209300153170
GPU19174791687
Memory11380999792
UX136185128505
NanoReview Score651041473154
3DMark Wild Life
3DMark Wild Life
Xiaomi Mi 9
3100
Xiaomi Redmi 15 5G
n/a
Max Surface Temp.35.6 °Cn/a
Stability91 %n/a
Graphics Test18 fpsn/a
Graphics Score3100n/a
Sources: 3DMark [Xiaomi Mi 9]
PCMark 3.0
PCMark 3.0
Xiaomi Mi 9
10649
Xiaomi Redmi 15 5G
n/a
Writing score14618n/a
Web score7084n/a
Video editing6715n/a
Data manipulation7931n/a
NanoReview Score10649n/a

Memory

RAM
RAM Size 6 GB 4 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 2133 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity128 GB128 GB
Storage TypeUFS 2.1UFS 2.2
Memory CardNoNo

Software

OS Android 9.0 (Upgradeable to Android 11) Android 15
OS Size 13.5 GB n/a
UI Skin MIUI 12.5 HyperOS 2.0

Battery

Volume 3300 mAh 7000 mAh
Max Charging Power 27 W 33 W
Battery Type Li-Po n/a
Removable No No
Wireless Charging Yes (20 W) No
Reverse Charging No No
Fast Charging Yes Quick Charge 4 (50% in 30 min) Yes
Full Charge Time 1:30 h n/a
Battery Life Test
Battery Life
Xiaomi Mi 9
17:14
Xiaomi Redmi 15 5G
n/a
Web Browsing06:08 hn/a
Video Playback11:37 hn/a
Games04:07 hn/a
Standby Mode83 hn/a

Main camera

Matrix 48 MP 50 MP
Photo resolution 8000x6000 pixels n/a
Zoom Optical, 2x Digital
Flash Dual LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording Yes (Up to 60 fps) No
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 960 fps (1080p) n/a
Wide-angle lens 117 ° n/a
Lenses count Standard: 48 MP
Telephoto: 12 MP
Ultra-wide: 16 MP		 Standard: 50 MP
Depth
Features - Bokeh effect
- Pro mode
- RAW support		 Bokeh effect
Main lens
Matrix48 MP50 MP
Aperturef/1.8f/1.8
Focal length27 mmn/a
SensorSony IMX586n/a
Sensor size1/2n/a
Pixel size0.8 μmn/a
AutofocusLaser autofocusPhase autofocus
StabilizationDigitalDigital
Telephoto
Matrix12 MPn/a
Aperturef/2.2n/a
Focal length54 mmn/a
SensorSamsung S5K3M5n/a
Sensor size1/3.6n/a
Pixel size1 μmn/a
StabilizationDigitaln/a
Ultra-wide lens
Matrix16 MPn/a
Aperturef/2.2n/a
Focal length13 mmn/a
SensorSony IMX481n/a
Sensor size1/3.0n/a
Pixel size1 μmn/a
StabilizationDigitaln/a
Main camera DxOMark results
Photo quality
Xiaomi Mi 9
112
Xiaomi Redmi 15 5G
n/a
Video quality
Xiaomi Mi 9
99
Xiaomi Redmi 15 5G
n/a
Overall camera score
Xiaomi Mi 9
107
Xiaomi Redmi 15 5G
n/a
Sources: DxOMark [Xiaomi Mi 9]

Front camera

Matrix 20 MP 8 MP
Photo resolution 5184x3880 pixels n/a
Aperture f/2.0 f/2.0
Focal length 18 mm n/a
Sensor CMOS n/a
Sensor size 1/3 n/a
Pixel size 0.9 μm n/a
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5.1
Bluetooth features LE, A2DP LE
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- USB-Host mode
- OTG		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM 850, GSM 900, GSM 1800, GSM 1900n/a
3G BandsHSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100n/a
LTE Bands*LTE (B800/B900/B1800/B2100/B2300/B2500/B2600)n/a
LTE category20n/a
5G SupportNoYes

Sound

Speakers Mono n/a
3.5 mm Jack No Yes
FM Radio No Yes
Dolby Atmos No n/a
Speaker Test
Max Volume
Xiaomi Mi 9
87.1 dB
Xiaomi Redmi 15 5G
n/a

Other

Class Flagship Mid-range
Announced February, 2019 yr August, 2025 yr
Release Date April, 2019 yr August, 2025 yr
Launch Price ($) 460 n/a
MSRP ($) n/a 230
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included n/a Yes, 33 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Xiaomi Redmi 15 5G 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