Xiaomi Redmi 9AT vs Realme C21Y
48
out of 100
VS
47
out of 100
Here we compared two budget smartphones: the 6.53-inch Xiaomi Redmi 9AT (with MediaTek Helio G25) that was released on September 9, 2020, against the Realme C21Y, which is powered by Unisoc T610 and came out 9 months after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.
Key differences
Reasons to consider the Realme C21Y
- Fingerprint scanner
- More recent OS version: Android 11 versus 10
- Reverse charging feature
- 9% faster in single-core GeekBench 6 test: 517 and 474 points
- The phone is 9-months newer
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.
Choose the importance of each parameter to more accurately identify the smartphone that best meets your particular needs.
Value for money
You can enter your local prices of these phones (in USD or other currency) and click on the "Calculate" button to see which one has a better value for money.
Promotion
Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | IPS LCD | IPS LCD |
| Size | 6.53 inches | 6.5 inches |
| Resolution | 720 x 1600 pixels | 720 x 1600 pixels |
| Aspect ratio | 20:9 | 20:9 |
| PPI | 269 ppi | 270 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Adaptive refresh rate | No | No |
| Max rated brightness | 400 nits | 400 nits |
| HDR support | No | No |
| Screen protection | Tempered glass | Tempered glass |
| Screen-to-body ratio | 81.1% | 81.6% |
| RGB color space | 92.6% | - |
| Response time | 45.5 ms | - |
| Contrast | 813:1 | - |
Peak brightness test (auto)
Design and build
| Height | 164.9 mm (6.49 inches) | 164.5 mm (6.48 inches) |
| Width | 77 mm (3.03 inches) | 76 mm (2.99 inches) |
| Thickness | 9 mm (0.35 inches) | 9.1 mm (0.36 inches) |
| Weight | 194 g (6.84 oz) | 200 g (7.05 oz) |
| Waterproof | No | No |
| Rear material | Plastic | Plastic |
| Frame material | Plastic | Plastic |
| Colors | Gray, Blue, Green | Black, Blue |
| Fingerprint scanner | No | Yes, rear |
Screen-to-body ratio
Performance
| Chipset | MediaTek Helio G25 | Unisoc T610 |
| Max clock | 2000 MHz | 1800 MHz |
| CPU cores | 8 (4 + 4) | 8 (2 + 6) |
| Architecture | - 4 cores at 1.5 GHz: Cortex-A53 - 4 cores at 2 GHz: Cortex-A53 |
- 6 cores at 1.82 GHz: Cortex-A55 - 2 cores at 1.82 GHz: Cortex-A75 |
| Lithography process | 12 nanometers | 12 nanometers |
| Graphics | PowerVR GE8320 | Mali-G52 MP2 |
| GPU shading units | 32 | 48 |
| GPU clock | 650 MHz | 614 MHz |
| FLOPS | ~41.8 GFLOPS | ~58.9 GFLOPS |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
AnTuTu Benchmark 10
| CPU | - | 86249 |
| GPU | - | 41435 |
| Memory | - | 59358 |
| UX | - | 63235 |
| Total score | - | 252147 |
Memory
| RAM size | 2 GB | 3, 4 GB |
| Memory type | LPDDR4X | LPDDR4X |
| Memory clock | 2133 MHz | 1866 MHz |
| Channels | 2 | 2 |
| Storage size | 32 GB | 32, 64 GB |
| Storage type | eMMC 5.1 | eMMC 5.1 |
| Memory card | MicroSD | MicroSD |
| Memory card max size | Up to 256 GB | Up to 256 GB |
Software
| Operating system | Android 10 | Android 11 |
| ROM | MIUI 12 | Realme UI 2.0 |
| OS size | 9 GB | - |
Battery
| Capacity | 5000 mAh | 5000 mAh |
| Max charge power | 10 W | 10 W |
| Battery type | Li-Po | Li-Po |
| Replaceable | No | No |
| Wireless charging | No | No |
| Reverse charging | No | Yes |
| Fast charging | No | No |
| Full charging time | 3:00 hr | 3:00 hr |
Camera
| Matrix | 13 megapixels | 13 megapixels |
| Image resolution | 4128 x 3096 | 4128 x 3096 |
| Zoom | Digital | Digital |
| Flash | LED | 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 | No |
| Lenses | 1 (13 MP) | 3 (13 MP + 2 MP + 2 MP) |
| Wide (main) lens | - 13 MP - Aperture: f/2.2 - Focal length: 28 mm - Pixel size: 1 micron - Phase autofocus |
- 13 MP - Aperture: f/2.2 - Focal length: 26 mm - Sensor: 1/3.06" (CMOS) - Phase autofocus |
| Macro lens | - | - 2 MP - Aperture: f/2.4 - Pixel size: 1.75 micron |
| Depth lens | - | - 2 MP - Aperture: f/2.4 |
| Camera features | - | - Bokeh mode |
| Megapixels | 5 megapixels | 5 megapixels |
| Image resolution | 2560 x 1960 | 2560 x 1960 |
| Aperture | f/2.2 | f/2.2 |
| Focal length | - | 27 mm |
| Pixel size | 1.12 microns | 1.12 microns |
| Sensor type | CMOS | CMOS |
| Sensor size | - | 1/5" |
| Video resolution | 1080p (Full HD) at 30 FPS | 1080p (Full HD) at 30 FPS |
Connectivity
| Wi-Fi standard | Wi-Fi 4 (802.11 a/b/g/n) | Wi-Fi 4 (802.11 a/b/g/n) |
| Wi-Fi features | - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
- Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 5 | 5 |
| Bluetooth features | LE, HID, A2DP | LE, HID, A2DP |
| USB type | Micro USB | Micro USB |
| USB version | 2 | 2 |
| USB features | - Charging - USB-Storage mode - OTG |
- Charging - USB-Storage mode |
| GPS | GPS, GLONASS, Beidou, Galileo | GPS, GLONASS, Beidou |
| NFC* | No | No |
| Infrared port | No | No |
| Number of SIM* | 2 | 2 |
| Type of SIM card | Nano | Nano |
| Multi SIM mode | Standby | Standby |
| eSIM support* | No | No |
| Hybrid slot | No | No |
| LTE Cat* | 4 | 7 |
| 5G support | No | No |
Sound
| Speakers | Mono | Mono |
| Headphone audio jack | Yes | Yes |
| FM radio | Yes | No |
| Dolby Atmos | No | No |
Speakers test
Max loudness
Other
| Category | Budget | Budget |
| Announced | September 2020 | June 2021 |
| Release date | September 2020 | July 2021 |
| SAR (head) | 0.78 W/kg | - |
| SAR (body) | 1.03 W/kg | - |
| Sensors | - Proximity sensor - Accelerometer - Ambient light sensor - Compass |
- Proximity sensor - Accelerometer - Ambient light sensor - Compass - Fingerprint |
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
Conclusion
If the performance, gaming, and sound are more important to you, then choose the Xiaomi Redmi 9AT. But if the display and camera are more of a priority – go for the Realme C21Y.
Cast your vote
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