Xiaomi Redmi 15C 4G vs Tecno Spark 40
53
out of 100
VS
51
out of 100
Here we compared two budget smartphones: the 6.9-inch Xiaomi Redmi 15C 4G (with MediaTek Helio G81 Ultra) that was released on August 1, 2025, against the Tecno Spark 40, which is powered by MediaTek Helio G81 and came out 1 month before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.
Select the amount of RAM to evaluate performance and value for money more precisely
Key differences
Reasons to consider the Xiaomi Redmi 15C 4G
- Newer Bluetooth version (v5.4)
- Comes with 800 mAh larger battery capacity: 6000 vs 5200 mAh
Reasons to consider the Tecno Spark 40
- Stereo speakers
- Supports higher wattage charging (45W versus 33W)
- Supports Dolby Atmos sound technology
- 24% faster in single-core GeekBench 6 test: 501 and 403 points
- Weighs 17 grams less
- Has a built-in infrared port
Review
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.
Select your primary usage scenario to get a more accurate NanoReview Score
Value for money (Beta)
Tests and specifications
Comparison table of technical specifications and testsDisplay
| 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 | 810 nits | - |
| HDR support | No | No |
| Touch sampling rate | 240 Hz | - |
| Screen protection | Corning Gorilla Glass 3 | Tempered glass |
| Screen-to-body ratio | 84.3% | 84.2% |
Screen space comparison
Redmi 15C 4G
6.9β³ (20:9 ratio) = 17.8 in2
Spark 40
6.67β³ (20:9 ratio) = 16.6 in2
~7% more screen space
Design and build
| Height | 171.56 mm (6.75 inches) | 165.6 mm (6.52 inches) |
| Width | 79.47 mm (3.13 inches) | 77 mm (3.03 inches) |
| Thickness | 7.99 mm (0.31 inches) | 7.7 mm (0.3 inches) |
| Weight | 205 g (7.23 oz) | 188 g (6.63 oz) |
| Waterproof | IP64 | IP64 |
| Rear material | Eco-leather | - |
| Frame material | Plastic | Plastic |
| Colors | Black, Blue, Green, Orange | White, Black, Gray, Blue |
| Fingerprint scanner | Yes, in-button | Yes, in-button |
| Repairability | Average (2.63/5) | - |
| Drop resistance | Excellent (A) Β· 270 drops | - |
Screen-to-body ratio
Performance
| Chipset | MediaTek Helio G81 Ultra | MediaTek Helio G81 |
| Max clock | 2000 MHz | 2000 MHz |
| CPU cores | 8 (2 + 6) | 8 (2 + 6) |
| Architecture | - 6 cores at 1.7 GHz: Cortex-A55 - 2 cores at 2 GHz: Cortex-A75 |
- 6 cores at 1.7 GHz: Cortex-A55 - 2 cores at 2 GHz: Cortex-A75 |
| Manufacturing | TSMC | TSMC |
| Lithography process | 12 nanometers | 12 nanometers |
| Neural processor (NPU) | Yes | Yes |
| Graphics | Mali-G52 MP2 | Mali-G52 MP2 |
| GPU shading units | 48 | 48 |
| GPU clock | 820 MHz | 820 MHz |
| FLOPS | ~78.7 GFLOPS | ~78.7 GFLOPS |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Compute Score (GPU)
| Compute Score (GPU) | 915 | - |
| Single-core score | 403 | 501 |
| Multi-core score | 1384 | 1410 |
AnTuTu Benchmark 11
| CPU | 131538 | 144990 |
| GPU | 23704 | 24069 |
| Memory | 98010 | 108375 |
| UX | 108676 | 110853 |
| Total score | 361928 | 388287 |
| Samples | [5 tests] | Less than 3 |
PCMark 3.0
| Web score | 9949 | - |
| Video editing | 5889 | - |
| Photo editing | 17453 | - |
| Data manipulation | 5631 | - |
| Writing score | 9299 | - |
Recent User Tests
Xiaomi Redmi 15C 4G
| Date | Benchmark | Result |
|---|---|---|
| π 2026-09-08 (BerQt) | AnTuTu 11 | 348068 |
| π 2026-06-07 (Sg) | AnTuTu 11 | 367297 |
| π 2026-06-07 (Sg) | AnTuTu 11 | 367297 |
| π 2026-06-07 (Chelzie) | AnTuTu 11 | 352100 |
| π 2026-05-11 -> Litooooo | AnTuTu 11 | 361826 |
Tecno Spark 40
| Date | Benchmark | Result |
|---|---|---|
| π 2026-05-25 (Shuvo) | AnTuTu 11 | 388287 |
Memory
| RAM size | 4 GB | 4 GB |
| Memory type | LPDDR4X | LPDDR4X |
| Memory clock | 1800 MHz | 1800 MHz |
| Channels | 2 | 2 |
| Storage size | 128 GB | 128 GB |
| Storage type | eMMC 5.1 | eMMC 5.1 |
| Memory card | MicroSD | MicroSD |
| Memory card max size | Up to 1024 GB | Up to 1024 GB |
Software
| Operating system | Android 15 | Android 15 |
| ROM | HyperOS 2.0 | HIOS 15 |
| OS updates | 5 years | - |
Battery
| Capacity | 6000 mAh | 5200 mAh |
| Max charge power | 33 W | 45 W |
| Battery type | Li-Po | Li-Po |
| Replaceable | No | No |
| Wireless charging | No | No |
| Reverse charging | No | No |
| Bypass charging | No | - |
| Fast charging | Yes (50% in 40 min) | Yes (50% in 21 min) |
| Full charging time | 1:37 hr | 0:56 hr |
| Battery cycles | 1000 cycles | - |
Main camera
| Matrix | 50 megapixels | 50 megapixels |
| Image resolution | 8160 x 6144 | - |
| 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 |
| Lenses | 1) Standard: 50 MP 2) Depth |
1) Standard: 50 MP 2) Depth |
| Camera features | - Bokeh mode - Pro mode |
- Bokeh mode - Pro mode |
| Image resolution | 50 MP | 50 MP |
| Aperture | f/1.8 | - |
| Focal length | 28 mm | - |
| Sensor | Samsung S5KJNS | - |
| Sensor size | 1/2.96" (β 0.34 inch) | - |
| Pixel size | 0.64 micron | - |
| Autofocus | Phase autofocus | Phase autofocus |
| Stabilization | Digital | Digital |
Selfie camera
| Megapixels | 8 megapixels | 8 megapixels |
| Aperture | f/2.0 | - |
| Sensor | Smartsens SC1320CS | CMOS |
| Sensor size | 1/3.06" (β 0.33 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 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, Galileo |
| NFC* | Depends on the region | Depends on the region |
| Infrared port | No | Yes |
| 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 | No | No |
Sound
| Speakers | Mono | Stereo |
| Headphone audio jack | Yes | Yes |
| FM radio | Yes | Yes |
| Dolby Atmos | No | Yes |
Other
| Category | Budget | Budget |
| Announced | August 2025 | July 2025 |
| Release date | August 2025 | July 2025 |
| Launch price (MSRP) | $179 | $130 |
| Successor | - | - Tecno Spark 50 5G |
| Sensors | - Accelerometer - Ambient light sensor - Compass - Fingerprint |
- Proximity sensor - Accelerometer - Ambient light sensor - Compass - Fingerprint |
| Bundled charger | Yes, 33 W | Yes, 45 W |
Further details
Notes on Redmi 15C 4G:
- The back cover is either glass or eco-leather.
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
Conclusion
If the camera, battery life, and software are more important to you, then choose the Xiaomi Redmi 15C 4G. But if the sound is more of a priority β go for the Tecno Spark 40.
Cast your vote
Total votes: 67
