Xiaomi Poco C81x vs Tecno Spark 40C
51
out of 100
VS
51
out of 100
Here we compared two budget smartphones: the 6.88-inch Xiaomi Poco C81x (with Unisoc T7250) that was released on April 23, 2026, against the Tecno Spark 40C, 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.
Select the amount of RAM to evaluate performance and value for money more precisely
Key differences
Reasons to consider the Xiaomi Poco C81x
- Reverse charging feature
- The phone is 9 months newer
Reasons to consider the Tecno Spark 40C
- Water-resistant body (IP64 classification)
- Newer Bluetooth version (v5.3)
- Comes with 800 mAh larger battery capacity: 6000 vs 5200 mAh
- Stereo speakers
- Has 33% more RAM: 4GB versus 3GB
- Supports Dolby Atmos sound technology
- 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 | 6.88 inches | 6.67 inches |
| Resolution | 720 x 1640 pixels | 720 x 1600 pixels |
| Aspect ratio | 20:9 | 20:9 |
| PPI | 260 ppi | 263 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Adaptive refresh rate | Yes (60-120 Hz) | Yes (60-120 Hz) |
| Max rated brightness | 650 nits | - |
| HDR support | No | No |
| Screen protection | Tempered glass | Tempered glass |
| Screen-to-body ratio | 85.5% | 84.2% |
Design and build
| Height | 171.79 mm (6.76 inches) | 165.6 mm (6.52 inches) |
| Width | 77.8 mm (3.06 inches) | 77 mm (3.03 inches) |
| Thickness | 8.26 mm (0.33 inches) | 8.4 mm (0.33 inches) |
| Weight | 193 g (6.81 oz) | 190 g (6.7 oz) |
| Waterproof | No | IP64 |
| Rear material | Plastic | Plastic |
| Frame material | Plastic | Plastic |
| Colors | Black, Blue | White, Black, Gray, Blue |
| Fingerprint scanner | Yes, in-button | Yes, in-button |
Screen-to-body ratio
Performance
| Chipset | Unisoc T7250 | MediaTek Helio G81 |
| Max clock | 1800 MHz | 2000 MHz |
| CPU cores | 8 (2 + 6) | 8 (2 + 6) |
| Architecture | - 6 cores at 1.6 GHz: Cortex-A55 - 2 cores at 1.8 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) | No | Yes |
| Graphics | Mali-G57 MP1 | Mali-G52 MP2 |
| GPU shading units | 32 | 48 |
| GPU clock | 850 MHz | 820 MHz |
| FLOPS | ~54.4 GFLOPS | ~78.7 GFLOPS |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Compute Score (GPU)
| Compute Score (GPU) | 711 | - |
| Single-core score | 440 | 444 |
| Multi-core score | 1469 | 1372 |
AnTuTu Benchmark 11
| CPU | 130090 | 140880 |
| GPU | 32093 | 23707 |
| Memory | 125604 | 88844 |
| UX | 62918 | 110027 |
| Total score | 350705 | 363458 |
| Samples | Less than 3 | [2 tests] |
PCMark 3.0
| Web score | - | 8115 |
| Video editing | - | 5775 |
| Photo editing | - | 16330 |
| Data manipulation | - | 5146 |
| Writing score | - | 8908 |
Recent User Tests
Xiaomi Poco C81x
No benchmark results yet
Tecno Spark 40C
| Date | Benchmark | Result |
|---|---|---|
| 📘 2026-07-05 (Zoro) | Battery life | SOT 9:00 / 9:00 |
| 📘 2026-04-11 -> Alehakind | AnTuTu 11 | 363458 |
| 📘 2025-10-10 (K) | AnTuTu 11 | 356117 |
Memory
| RAM size | 3 GB | 4 GB |
| Memory type | LPDDR4X | LPDDR4X |
| Memory clock | 1866 MHz | 1800 MHz |
| Channels | 2 | 2 |
| Storage size | 64 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 | - | HIOS 15.1 |
Battery
| Capacity | 5200 mAh | 6000 mAh |
| Max charge power | 15 W | 18 W |
| Battery type | Li-Po | Li-Po |
| Replaceable | No | No |
| Wireless charging | No | No |
| Reverse charging | Yes | No |
| Bypass charging | No | - |
| Fast charging | Yes (25% in 30 min) | Yes |
| Full charging time | 2:30 hr | - |
Main camera
| Matrix | 13 megapixels | 13 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: 13 MP |
1) Standard: 13 MP 2) Depth: 8 MP |
| Camera features | - Bokeh mode - Pro mode |
- Bokeh mode - Pro mode |
| Image resolution | 13 MP | 13 MP |
| Aperture | f/2.2 | f/1.8 |
| Focal length | - | 27 mm |
| Autofocus | Phase autofocus | Phase autofocus |
| Stabilization | Digital | Digital |
Selfie camera
| Megapixels | 8 megapixels | 8 megapixels |
| Aperture | f/2.0 | - |
| Sensor | - | CMOS |
| 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 | 5.2 | 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 |
| 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 | April 2026 | July 2025 |
| Release date | April 2026 | August 2025 |
| Launch price (MSRP) | $90 | $100 |
| Sensors | - Accelerometer - 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
If the gaming and software are more important to you, then choose the Xiaomi Poco C81x. But if the design and sound are more of a priority – go for the Tecno Spark 40C.
Cast your vote
Total votes: 2