Home Phone comparison Nothing Phone (3a) Pro and Xiaomi Redmi 15 5G - Which is better?

Nothing Phone (3a) Pro vs Xiaomi Redmi 15 5G

70 out 100
Nothing Phone (3a) Pro
VS
61 out 100
Xiaomi Redmi 15 5G
Nothing Phone (3a) Pro
Xiaomi Redmi 15 5G

Compared 2 smartphones : Nothing Phone (3a) Pro Manufactured in March, 2025, with display 6.77 with chipsetQualcomm Snapdragon 7s Gen 3, vs Xiaomi Redmi 15 5G, Manufactured in August, 2025with 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 Nothing Phone (3a) Pro
  • Higher pixel density: 387ppi
  • Lighter design: 211g vs 224g
  • Newer Bluetooth version: 5.4 vs 5.1
  • Built-in eSIM
Reasons to choose Xiaomi Redmi 15 5G
  • Larger display: 6.9in
  • Higher refresh rate: 144Hz
  • Higher battery capacity: 7000mAh vs 5000mAh
  • Infrared port
  • Includes charger

Versions

Available versions and configurations
Memory Options - 8/128 GB
- 8/256 GB
- 12/256 GB		 - 4/128 GB
- 6/128 GB
- 8/256 GB

Review

Key Specs Nothing Phone (3a) Pro 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
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Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Nothing Phone (3a) Pro
vs
Xiaomi Redmi 15 5G

Display

Display quality comparison
Type AMOLED IPS LCD
Size 6.77 in 6.9 in
Resolution 1080x2392 pixels 1080x2340 pixels
Aspect ratio n/a 19.5:9
Pixel density 387 ppi 374 ppi
Refresh rate 120 Hz 144 Hz
Adaptive refresh rate Yes (60-120 Hz) Yes
Max brightness 1300 nits n/a
HDR support Yes HDR10+ No
Screen-to-body ratio 88 % 83.1 %
Features - DCI-P3
- Always-On Display
- DC dimming		 n/a
Display test
Peak brightness (auto)
Nothing Phone (3a) Pro
1300 nits
Xiaomi Redmi 15 5G
n/a

Design & Build

Design and ergonomics comparison
Height 163.52 mm (6.44 in) 171.1 mm (6.74 in)
Width 77.5 mm (3.05 in) 82.1 mm (3.23 in)
Thickness 8.39 mm (0.33 in) 8.6 mm (0.34 in)
Weight 211 g (7.44 oz) 224 g (7.9 oz)
Water resistance IP64 IP64
Cooling system Vapor chamber n/a
Back panel n/a Plastic
Frame n/a Plastic
Colors - Black
- Gray		 - Black
- Gray
- Green
Fingerprint sensor Yes In-Display Yes, In-Button
Screen-to-body ratio
Nothing Phone (3a) Pro
88 %
Xiaomi Redmi 15 5G
83.1 %

Performance

Testing Nothing Phone (3a) Pro and Xiaomi Redmi 15 5G In benchmarks
Processor
Chipset Qualcomm Snapdragon 7s Gen 3 Qualcomm Snapdragon 6s Gen 3
Max Frequency 2500 MHz 2300 MHz
CPU Cores 8 (1 + 3 + 4) 8 (2 + 6)
Architecture - 4/1.8 (Kryo Silver (Cortex-A520))
- 3/2.4 (Kryo Gold (Cortex-A720))
- 1/2.5 (Kryo Prime (Cortex-A720))		 - 6/2 (Cortex-A55)
- 2/2.3 (Cortex-A78)
Process TSMC TSMC
Transistor Size 4 nm 6 nm
Neural Processor Yes Hexagon
Graphics Adreno 810 Adreno 619
GPU Cores 256 256
GPU Frequency 1050 MHz 900 MHz
FLOPS 537.6 GFLOPS 460.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Nothing Phone (3a) Pro
1182
Xiaomi Redmi 15 5G
935
Geekbench 6 (Multi-Core)
Nothing Phone (3a) Pro
3357
Xiaomi Redmi 15 5G
2109
Geekbench 6 (Single-Core)1182935
Geekbench 6 (Multi-Core)33572109
Geekbench Compute (GPU)4459n/a
Sources: Geekbench v6 [Nothing Phone (3a) Pro]
AnTuTu 10
AnTuTu 10
Nothing Phone (3a) Pro
750673
Xiaomi Redmi 15 5G
473154
CPU273000153170
GPU19208991687
Memory13507599792
UX150509128505
NanoReview Score750673473154

Memory

RAM
RAM Size - 8 GB
- 12 GB		 4 GB
Memory Type LPDDR5 LPDDR4X
Memory Frequency 3200 MHz 2133 MHz
Channels 4 2
Storage
Storage Capacity- 128 GB
- 256 GB		128 GB
Storage Typen/aUFS 2.2
Memory CardNoNo

Software

OS Android 15 Android 15
UI Skin Nothing OS 3.1 HyperOS 2.0

Battery

Volume 5000 mAh 7000 mAh
Max Charging Power 50 W 33 W
Battery Type Li-Po n/a
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes (60% in 15 min) Yes
Full Charge Time 1:05 h n/a
Battery Life Test
Battery Life
Nothing Phone (3a) Pro
24:09
Xiaomi Redmi 15 5G
n/a
Web Browsing08:09 hn/a
Video Playback16:21 hn/a
Games05:48 hn/a
Standby Mode120 hn/a

Main camera

Matrix 50 MP 50 MP
Photo resolution 8192x6144 pixels n/a
Zoom Optical, 3x Digital
Flash LED LED
Stabilization Optical Digital
8K Recording No No
4K Recording Yes (Up to 30 fps) No
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 240 fps (720p) n/a
Wide-angle lens 120 ° n/a
Lenses count Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 8 MP		 Standard: 50 MP
Depth
Features - Bokeh effect
- Pro mode		 Bokeh effect
Main lens
Matrix50 MP50 MP
Aperturef/1.9f/1.8
Focal length24 mmn/a
SensorSony LYT-600n/a
Sensor size1/1.56n/a
Pixel size1 μmn/a
AutofocusPhase autofocus (Dual Pixel)Phase autofocus
StabilizationOpticalDigital
Telephoto
Matrix50 MPn/a
Aperturef/2.6n/a
Focal length70 mmn/a
Sensor size1/1.95n/a
Pixel size0.8 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix8 MPn/a
Aperturef/2.2n/a
Focal length15 mmn/a
SensorSony IMX355n/a
Sensor size1/4.0n/a
Pixel size1.12 μmn/a
StabilizationDigitaln/a

Front camera

Matrix 50 MP 8 MP
Photo resolution 8192x6144 pixels n/a
Aperture f/2.2 f/2.0
Focal length 24 mm n/a
Sensor size 1/2.76 n/a
Autofocus n/a No
Stabilization Digital Digital
Video resolution 2160p (4K) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 a/b/g/n/ac/ax) 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 5.4 5.1
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort No n/a
GPS - GPS
- GLONASS
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G BandsGSM 850/900/1800/1900n/a
3G BandsUMTS 1, 2, 4, 5, 6, 8, 19n/a
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B17/B18/B19/B20/B26/B28/B38/B40/B41/B42/B48/B66)n/a
5G SupportYesYes

Sound

Speakers Stereo n/a
3.5 mm Jack No Yes
FM Radio No Yes

Other

Class Mid-range Mid-range
Announced March, 2025 yr August, 2025 yr
Release Date March, 2025 yr August, 2025 yr
Launch Price ($) 459 n/a
MSRP ($) n/a 230
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included No Yes, 33 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

No clear favorite identified yet; updates may follow as new data arrives.

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