Home Phone comparison Nothing Phone (3a) and Xiaomi Redmi Note 15 4G - Which is better?

Nothing Phone (3a) vs Xiaomi Redmi Note 15 4G

69 out 100
Nothing Phone (3a)
VS
64 out 100
Xiaomi Redmi Note 15 4G
Nothing Phone (3a)
Xiaomi Redmi Note 15 4G

Compared 2 smartphones : Nothing Phone (3a) Manufactured in March, 2025, with display 6.77 with chipsetQualcomm Snapdragon 7s Gen 3, vs Xiaomi Redmi Note 15 4G, Manufactured in December, 2025 with chipsetMediaTek Helio G100 Ultra. 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)
  • Newer Bluetooth version: 5.4 vs 5.3
Reasons to choose Xiaomi Redmi Note 15 4G
  • Higher pixel density: 388ppi
  • Lighter design: 183.7g vs 201g
  • Higher battery capacity: 6000mAh vs 5000mAh

Versions

Available versions and configurations
Memory Options - 8/128 GB
- 8/256 GB
- 12/256 GB		 - 6/128 GB
- 8/128 GB
- 8/256 GB
- 8/512 GB

Review

Key Specs Nothing Phone (3a) and Xiaomi Redmi Note 15 4G
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)
vs
Redmi Note 15 4G

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.77 in 6.77 in
Resolution 1080x2392 pixels 1080x2340 pixels
Pixel density 387 ppi 388 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (60-120 Hz) Yes (60-120 Hz)
Max brightness 1300 nits n/a
HDR support Yes HDR10+ No
Screen-to-body ratio 88 % 89.7 %
Features - DCI-P3
- Always-On Display
- DC dimming		 DCI-P3
Display test
Peak brightness (auto)
Nothing Phone (3a)
1272 nits
Xiaomi Redmi Note 15 4G
n/a

Design & Build

Design and ergonomics comparison
Height 163.52 mm (6.44 in) 164 mm (6.46 in)
Width 77.5 mm (3.05 in) 75.4 mm (2.97 in)
Thickness 8.35 mm (0.33 in) 7.4 mm (0.29 in)
Weight 201 g (7.09 oz) 183.7 g (6.48 oz)
Water resistance IP64 IP64
Cooling system Vapor chamber n/a
Back panel n/a Plastic
Frame n/a Plastic
Colors - White
- Black
- Blue		 - Black
- Blue
- Green
- Purple
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Nothing Phone (3a)
88 %
Xiaomi Redmi Note 15 4G
89.7 %

Performance

Testing Nothing Phone (3a) and Xiaomi Redmi Note 15 4G In benchmarks
Processor
Chipset Qualcomm Snapdragon 7s Gen 3 MediaTek Helio G100 Ultra
Max Frequency 2500 MHz 2200 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)
- 2/2.2 (Cortex-A76)
Process TSMC TSMC
Transistor Size 4 nm 6 nm
Neural Processor Yes Yes
Graphics Adreno 810 Mali-G57 MP2
GPU Cores 256 64
GPU Frequency 1050 MHz 1000 MHz
FLOPS 537.6 GFLOPS 128 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Nothing Phone (3a)
1178
Xiaomi Redmi Note 15 4G
730
Geekbench 6 (Multi-Core)
Nothing Phone (3a)
3214
Xiaomi Redmi Note 15 4G
2025
Geekbench 6 (Single-Core)1178730
Geekbench 6 (Multi-Core)32142025
Geekbench Compute (GPU)4435n/a
Sources: Geekbench v6 [Nothing Phone (3a)]
AnTuTu 10
AnTuTu 10
Nothing Phone (3a)
708353
Xiaomi Redmi Note 15 4G
437184
CPU215621132724
GPU19771572238
Memory145649109980
UX149368122242
NanoReview Score708353437184

Memory

RAM
RAM Size - 8 GB
- 12 GB		 6 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 2133 MHz 2133 MHz
Channels 4 2
Storage
Storage Capacity- 128 GB
- 256 GB		128 GB
Storage TypeUFS 2.2UFS 2.2
Memory CardNoNo

Software

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

Battery

Volume 5000 mAh 6000 mAh
Max Charging Power 50 W 33 W
Battery Type Li-Po Silicon Carbon (Si/C)
Removable No No
Wireless Charging No No
Reverse Charging No Yes
Fast Charging Yes (61% in 30 min) Yes
Full Charge Time 1:06 h n/a
Battery Life Test
Battery Life
Nothing Phone (3a)
25:03
Xiaomi Redmi Note 15 4G
n/a
Web Browsing08:06 hn/a
Video Playback16:25 hn/a
Games05:49 hn/a
Standby Mode131 hn/a

Main camera

Matrix 50 MP 108 MP
Photo resolution 8192x6144 pixels n/a
Zoom Optical, 2x 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: 108 MP
Depth: 2 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
Main lens
Matrix50 MP108 MP
Aperturef/1.9f/1.7
Focal length24 mm24 mm
SensorSony LYT-600n/a
Sensor size1/1.561/1.67 (0.6)
Pixel size1 μm0.64 μm
AutofocusPhase autofocusPhase autofocus
StabilizationOpticalDigital
Telephoto
Matrix50 MPn/a
Aperturef/2.6n/a
Focal length50 mmn/a
Sensor size1/2.74n/a
Pixel size0.64 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 32 MP 20 MP
Aperture f/2.2 f/2.2
Focal length 22 mm n/a
Sensor CMOS Omnivision OV02F
Sensor size 1/3.44 1/5 (0.2)
Pixel size n/a 1.75 μm
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 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 5.3
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 No
GPS - GPS
- GLONASS
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Varies by region
Infrared Port No No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
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 SupportYesNo

Sound

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

Other

Class Mid-range Mid-range
Announced March, 2025 yr December, 2025 yr
Release Date March, 2025 yr December, 2025 yr
Launch Price ($) 329 n/a
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included No n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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