Oppo Realme C21Y vs Realme C12
Here we compared two budget smartphones: the 6.5-inch Oppo Realme C21Y (with Unisoc T610) that was released on June 21, 2021, against the Oppo Realme C12, which is powered by MediaTek Helio G35 and came out 11 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.
Key differences
Reasons to consider the Oppo Realme C21Y
- 54% better performance in AnTuTu Benchmark (193K versus 125K)
- Uses a faster type of memory: LPDDR4X 1866 MHz
- The phone is 11-months newer
- Reverse charging feature
- 2x faster in single-core GeekBench 5 test: 349 and 177 points
Reasons to consider the Oppo Realme C12
- Comes with 1000 mAh larger battery capacity: 6000 vs 5000 mAh
Review
Display
Screen quality, color accuracy, brightness
Performance
CPU/GPU performance in apps and games
Battery
Battery life, charging type and speed
Camera
Photo and video recording quality
Connectivity
Networks, ports, data transmission
NanoReview score
Final comparison evaluation
Value for money
You can enter your local price of these phones (in USD or any other currency) and click on the "Calculate" button to see which one has a better value for money.
Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | IPS LCD | IPS LCD |
| Size | 6.5 inches | 6.5 inches |
| Resolution | 720 x 1600 pixels | 720 x 1600 pixels |
| Aspect ratio | 20:9 | 20:9 |
| PPI | 270 ppi | 270 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| HDR support | No | No |
| Screen protection | Tempered glass | Corning Gorilla Glass |
| Screen-to-body ratio | 81.6% | 81.7% |
Max. Brightness
Design and build
| Height | 164.5 mm (6.48 inches) | 164.5 mm (6.48 inches) |
| Width | 76 mm (2.99 inches) | 75.9 mm (2.99 inches) |
| Thickness | 9.1 mm (0.36 inches) | 9.8 mm (0.39 inches) |
| Weight | 200 gramm (7.05 oz) | 209 gramm (7.37 oz) |
| Waterproof | No | No |
| Rear material | Plastic | Plastic |
| Frame material | Plastic | Plastic |
| Colors | Black, Blue | Silver, Blue, Red |
| Fingerprint scanner | Yes, rear | Yes, rear |
Screen-to-body ratio
Performance
| Chipset | Unisoc T610 | MediaTek Helio G35 |
| Max. clock | 1800 MHz | 2300 MHz |
| CPU cores | 8 (2 + 6) | 8 (8) |
| Architecture | - 6 cores at 1.82 GHz: Cortex-A55 - 2 cores at 1.82 GHz: Cortex-A75 |
- 8 cores at 2.3 GHz: Cortex-A53 |
| L3 cache | 1 MB | - |
| Lithography process | 12 nanometers | 12 nanometers |
| Graphics | ARM Mali G52 MP2 | IMG PowerVR GE8320 |
| GPU clock | 614 MHz | 680 MHz |
| FLOPS | ~71.2 GFLOPS | ~54.4 GFLOPS |
| RAM size | 3, 4 GB | 3 GB |
| Memory type | LPDDR4X | LPDDR3 |
| Memory clock | 1866 MHz | 933 MHz |
| Channels | 2 | 1 |
| Storage size | 32, 64 GB | 32 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 |
Benchmarks
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
AnTuTu Benchmark 9
| CPU | 66485 | 47134 |
| GPU | 32103 | 14778 |
| Memory | 37779 | 32235 |
| UX | 57506 | 31792 |
| Total score | 193009 | 125075 |
Software
| Operating system | Android 11 | Android 10 (Can be upgraded to Android 11) |
| ROM | Realme UI 2.0 | Realme UI 1.0 |
Battery
| Capacity | 5000 mAh | 6000 mAh |
| Charge power | 10 W | 10 W |
| Battery type | Li-Po | Li-Po |
| Replaceable | No | No |
| Wireless charging | No | No |
| Reverse charging | Yes | No |
| Fast charging | No | No |
| Full charging time | 3:00 hr | 3:35 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 | 3 (13 MP + 2 MP + 2 MP) | 3 (13 MP + 2 MP + 2 MP) |
| Wide (main) lens | - 13 MP - Aperture: f/2.2 - Focal length: 26 mm - Sensor: 1/3.06" (CMOS) - Phase autofocus |
- 13 MP - Aperture: f/2.2 - Pixel size: 1.12 micron - Sensor: 1/3" (CMOS) - Phase autofocus |
| Monochrome lens | - | - 2 MP - Aperture: f/2.4 - Pixel size: 1.75 micron - Sensor: 1/5" (CMOS) |
| Macro lens | - 2 MP - Aperture: f/2.4 - Pixel size: 1.75 micron |
- 2 MP - Aperture: f/2.4 - Pixel size: 1.75 micron - Sensor: 1/5" (CMOS) |
| Depth lens | - 2 MP - Aperture: f/2.4 |
- |
| Camera features | - Bokeh mode | - Bokeh mode |
| Megapixels | 5 megapixels | 5 megapixels |
| Image resolution | 2560 x 1960 | 2560 x 1960 |
| Aperture | f/2.2 | f/2.0 |
| Focal length | 27 mm | 27 mm |
| Pixel size | 1.12 microns | 1.12 microns |
| Sensor type | CMOS | CMOS |
| Sensor size | 1/5" | 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 |
- Charging - USB-Storage mode - OTG |
| GPS | GPS, GLONASS, Beidou | 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* | 7 | 7 |
| 5G support | No | No |
Sound
| Speakers | Mono | Mono |
| Headphone audio jack | Yes | Yes |
| FM radio | No | Yes |
| Dolby Atmos | No | No |
Other
| Category | Budget | Budget |
| Announced | June 2021 | August 2020 |
| Release date | July 2021 | September 2020 |
| Sensors | - Proximity sensor - Accelerometer - Ambient light sensor - Compass - Fingerprint |
- 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 display, performance, camera, and design are more important to you, then choose the Oppo Realme C21Y. But if the battery life is more of a priority – go for the Oppo Realme C12.
Cast your vote
Total votes: 3