Tecno Spark Slim vs Xiaomi Redmi Note 15 4G

Compared 2 smartphones : Tecno Spark Slim Manufactured in October, 2025, with display 6.78 with chipsetMediaTek Helio G200, vs Xiaomi Redmi Note 15 4G, Manufactured in December, 2025with chipsetMediaTek Helio G100 Ultra. Below are specs, tests, pros and cons for each device

Key Differences

Device key advantages
Reasons to choose Tecno Spark Slim
  • Larger display: 6.78in
  • Higher pixel density: 440ppi
  • Higher refresh rate: 144Hz
  • Lighter design: 156g vs 183.7g
  • Newer Bluetooth version: 5.4 vs 5.3
  • Supports Dolby Atmos
  • Infrared port
  • Includes charger
Reasons to choose Xiaomi Redmi Note 15 4G
  • Higher battery capacity: 6000mAh vs 5160mAh

Versions

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

Review

Key Specs Tecno Spark Slim 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
Adjust each parameter’s importance to find the best match for you.
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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

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.78 in 6.77 in
Resolution 1224x2720 pixels 1080x2340 pixels
Aspect ratio 20:9 n/a
Pixel density 440 ppi 388 ppi
Refresh rate 144 Hz 120 Hz
Adaptive refresh rate Yes Yes (60-120 Hz)
Max brightness 4500 nits n/a
HDR support No No
Screen-to-body ratio 89.1 % 89.7 %
Features - DCI-P3
- DC dimming
DCI-P3

Design & Build

Design and ergonomics comparison
Height 164.2 mm (6.46 in) 164 mm (6.46 in)
Width 75.9 mm (2.99 in) 75.4 mm (2.97 in)
Thickness 5.93 mm (0.23 in) 7.4 mm (0.29 in)
Weight 156 g (5.5 oz) 183.7 g (6.48 oz)
Water resistance IP64 IP64
Back panel n/a Plastic
Frame Plastic Plastic
Colors - White
- Black
- Black
- Blue
- Green
- Purple
Fingerprint sensor Yes, In-Display Yes, In-Display
Screen-to-body ratio
Tecno Spark Slim
89.1 %
Xiaomi Redmi Note 15 4G
89.7 %

Performance

Testing Tecno Spark Slim and Xiaomi Redmi Note 15 4G In benchmarks
Processor
Chipset MediaTek Helio G200 MediaTek Helio G100 Ultra
Max Frequency 2200 MHz 2200 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/2 (Cortex-A55)
- 2/2.2 (Cortex-A76)
- 6/2 (Cortex-A55)
- 2/2.2 (Cortex-A76)
Process TSMC TSMC
Transistor Size 6 nm 6 nm
Neural Processor Yes Yes
Graphics Mali-G57 MP2 Mali-G57 MP2
GPU Cores 64 64
GPU Frequency 1100 MHz 1000 MHz
FLOPS 140.8 GFLOPS 128 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Tecno Spark Slim
718
Xiaomi Redmi Note 15 4G
730
Geekbench 6 (Multi-Core)
Tecno Spark Slim
1985
Xiaomi Redmi Note 15 4G
2025
Geekbench 6 (Single-Core)718730
Geekbench 6 (Multi-Core)19852025
Geekbench Compute (GPU)1480n/a
AnTuTu 10
AnTuTu 10
Tecno Spark Slim
591552
Xiaomi Redmi Note 15 4G
437184
CPU220476132724
GPU4866572238
Memory149900109980
UX172511122242
NanoReview Score591552437184

Memory

RAM
RAM Size 8 GB 6 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 2133 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity256 GB128 GB
Storage TypeUFS 2.2UFS 2.2
Memory CardNoNo

Software

OS Android 15 Android 15
UI Skin HIOS 15 HyperOS 2.0

Battery

Volume 5160 mAh 6000 mAh
Max Charging Power 45 W 33 W
Battery Type Li-Po Silicon Carbon (Si/C)
Removable No No
Wireless Charging No No
Reverse Charging Yes Yes
Fast Charging Yes (52% in 30 min) Yes
Full Charge Time 0:57 h n/a

Main camera

Matrix 50 MP 108 MP
Photo resolution 8160x6144 pixels n/a
Zoom Digital Digital
Flash Dual LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording No No
1080p Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
Lenses count Standard: 50 MP Standard: 108 MP
Depth: 2 MP
Features - Bokeh effect
- Pro mode
- Bokeh effect
- Pro mode
Main lens
Matrix50 MP108 MP
Aperturen/af/1.7
Focal lengthn/a24 mm
Sensor sizen/a1/1.67 (0.6)
Pixel sizen/a0.64 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital

Front camera

Matrix 13 MP 20 MP
Aperture n/a f/2.2
Sensor CMOS Omnivision OV02F
Sensor size n/a 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 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 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
- Beidou
- Galileo
- GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Varies by region
Infrared Port Yes No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
5G SupportNoNo

Sound

3.5 mm Jack No No
FM Radio Yes Yes
Dolby Atmos Yes n/a

Other

Class Mid-range Mid-range
Announced September, 2025 yr December, 2025 yr
Release Date October, 2025 yr December, 2025 yr
MSRP ($) 190 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 Yes, 45 W n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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