Home > Smartphone comparison > Redmi 15a 5G vs Spark 40 – which one to choose?

Xiaomi Redmi 15a 5G vs Tecno Spark 40

57 out of 100
Xiaomi Redmi 15a 5G
VS
51 out of 100
Tecno Spark 40
Xiaomi Redmi 15a 5G
Tecno Spark 40

Here we compared two budget smartphones: the 6.9-inch Xiaomi Redmi 15a 5G (with Unisoc T8300) that was released on March 27, 2026, against the Tecno Spark 40, which is powered by MediaTek Helio G81 and came out 9 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

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Memory
  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery life
  6. Camera
  7. Comments

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Xiaomi Redmi 15a 5G
  • Comes with 1100 mAh larger battery capacity: 6300 vs 5200 mAh
  • Newer Bluetooth version (v5.4)
  • More energy-efficient CPU – Unisoc T8300
  • More recent OS version: Android 16 versus 15
  • Faster storage type - UFS 2.2 versus eMMC 5.1
  • Reverse charging feature
  • 74% faster in single-core GeekBench 6 test: 872 and 501 points
  • The phone is 9 months newer
Reasons to consider the Tecno Spark 40
  • Water-resistant body (IP64 classification)
  • Supports higher wattage charging (45W versus 15W)
  • Stereo speakers
  • Supports Dolby Atmos sound technology
  • Weighs 21.93 grams less
  • Has a built-in infrared port

Review

Evaluation of Xiaomi Redmi 15a 5G and Tecno Spark 40 crucial features
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
Scores with a red asterisk (*) are approximate and may change in the future as we gather more data.
NanoReview Score
Final comparison evaluation
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Value for money (Beta)

To get an accurate value-for-money index, update the default prices with actual prices from your country’s retailers (for the selected memory configs) and press the "Calculate" button.
Currency
4 / 64 GB
VS
4 / 128 GB
185.3
(Excellent)
Value Index
105.6
(Excellent)

Tests and specifications

Comparison table of technical specifications and tests
Phone:
Redmi 15a 5G
vs
Spark 40

Display

Type IPS LCD IPS LCD
Size 6.9 inches 6.67 inches
Resolution 720 x 1600 pixels 720 x 1600 pixels
Aspect ratio 20:9 20:9
PPI 254 ppi 263 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (60-120 Hz) Yes (60-120 Hz)
Max rated brightness 800 nits -
HDR support No No
Screen protection Tempered glass Tempered glass
Screen-to-body ratio 84.2% 84.2%
Screen space comparison
Redmi 15a 5G
6.9″ (20:9 ratio) = 17.8 in2
Spark 40
6.67″ (20:9 ratio) = 16.6 in2
~7% more screen space

Design and build

Height 171.6 mm (6.76 inches) 165.6 mm (6.52 inches)
Width 79.5 mm (3.13 inches) 77 mm (3.03 inches)
Thickness 8.2 mm (0.32 inches) 7.7 mm (0.3 inches)
Weight 209.93 g (7.4 oz) 188 g (6.63 oz)
Waterproof No IP64
Rear material Plastic -
Frame material Plastic Plastic
Colors Black, Blue, Purple White, Black, Gray, Blue
Fingerprint scanner Yes, in-button Yes, in-button
Screen-to-body ratio
Redmi 15a 5G
84.2%
Spark 40
84.2%

Performance

Chipset specifications of Xiaomi Redmi 15a 5G and Tecno Spark 40
SoC
Chipset Unisoc T8300 MediaTek Helio G81
Max clock 2200 MHz 2000 MHz
CPU cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6 cores at 2 GHz: Cortex-A55
- 2 cores at 2.2 GHz: Cortex-A78		 - 6 cores at 1.7 GHz: Cortex-A55
- 2 cores at 2 GHz: Cortex-A75
Manufacturing TSMC TSMC
Lithography process 6 nanometers 12 nanometers
Neural processor (NPU) Yes Yes
GPU
Graphics Mali-G57 MP2 Mali-G52 MP2
GPU shading units 64 48
GPU clock 950 MHz 820 MHz
FLOPS ~121.6 GFLOPS ~78.7 GFLOPS

Benchmarks

Benchmark comparison of Xiaomi Redmi 15a 5G and Tecno Spark 40
Geekbench 6 (Single-Core)
Redmi 15a 5G +74%
872
Spark 40
501
Geekbench 6 (Multi-Core)
Redmi 15a 5G +47%
2074
Spark 40
1410
Single-core score 872 501
Multi-core score 2074 1410
AnTuTu Benchmark 11
Redmi 15a 5G
n/a
Spark 40
388287
CPU - 144990
GPU - 24069
Memory - 108375
UX - 110853
Total score - 388287
Samples Less than 3 Less than 3
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Recent User Tests

The latest benchmark tests that have been submitted by users
Xiaomi Redmi 15a 5G
No benchmark results yet
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Tecno Spark 40
DateBenchmarkResult
📘 2026-05-25 (Shuvo)AnTuTu 11388287
Add View all (1)

Memory

RAM
RAM size 4 GB 4 GB
Memory type LPDDR4X LPDDR4X
Memory clock 2133 MHz 1800 MHz
Channels 2 2
Storage
Storage size 64 GB 128 GB
Storage type UFS 2.2 eMMC 5.1
Memory card MicroSD MicroSD
Memory card max size Up to 1024 GB Up to 1024 GB

Software

Operating system Android 16 Android 15
ROM HyperOS 3 HIOS 15

Battery

Capacity 6300 mAh 5200 mAh
Max charge power 15 W 45 W
Battery type Li-Po Li-Po
Replaceable No No
Wireless charging No No
Reverse charging Yes No
Bypass charging No -
Fast charging Yes Yes (50% in 21 min)
Full charging time - 0:56 hr
Add your battery life

Main camera

Matrix 32 megapixels 50 megapixels
Zoom Digital Digital
Flash LED Dual LED
Stabilization Digital Digital
8K video recording No No
4K video recording No No
1080p video recording Up to 30FPS Up to 30FPS
Slow motion No -
Lenses 1) Standard: 32 MP
2) Depth
1) Standard: 50 MP
2) Depth
Camera features - Bokeh mode
- Pro mode		 - Bokeh mode
- Pro mode
Standard lens
Image resolution 32 MP 50 MP
Aperture f/2.0 -
Pixel size 1.12 micron -
Autofocus Phase autofocus Phase autofocus
Stabilization Digital Digital

Selfie camera

Megapixels 8 megapixels 8 megapixels
Aperture f/2.0 -
Sensor CMOS CMOS
Sensor size 1/4.0" (≈ 0.25 inch) -
Pixel size 1.12 micron -
Autofocus No No
Stabilization No No
Video resolution 1080p (Full HD) at 30 FPS 1080p (Full HD) at 30 FPS
Depth sensor (TOF 3D) No No

Connectivity

Wi-Fi standard 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, QZSS GPS, GLONASS, Galileo
NFC* No Depends on the region
Infrared port No Yes
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* No No
Hybrid slot No No
5G support Yes No

Sound

Speakers Mono Stereo
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos No Yes

Other

Category Budget Budget
Announced March 2026 July 2025
Release date March 2026 July 2025
Launch price (MSRP) $140 $130
Successor - - Tecno Spark 50 5G
Sensors - Accelerometer
- Ambient light sensor
- Compass
- Fingerprint		 - Proximity sensor
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
Bundled charger Yes, 15 W Yes, 45 W
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

After analyzing all the data, we think that the Xiaomi Redmi 15a 5G is definitely a better buy.

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