Xiaomi Redmi Note 9 vs Oppo Realme C21Y
Here we compared two smartphones: the 6.53-inch Xiaomi Redmi Note 9 (with MediaTek Helio G85) that was released on April 30, 2020, against the Oppo Realme C21Y, which is powered by Unisoc T610 and came out 14 months after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.
Key differences
Reasons to consider the Xiaomi Redmi Note 9
- 46% higher pixel density (395 vs 270 PPI)
- Modern USB Type-C port
- Compatible with Wi-Fi 5 wireless networks
- Supports 18W fast charging
- 31% better performance in AnTuTu Benchmark (253K versus 192K)
- Delivers 17% higher maximum brightness (465 against 399 nits)
- Has an ultra-wide angle camera lens
- Slow-motion recording at 120FPS
- Has a built-in infrared port
Reasons to consider the Oppo Realme C21Y
- The phone is 1-year and 2-months newer
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
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Tests and specifications
Comparison table of technical specifications and testsDisplay
Type | IPS LCD | IPS LCD |
Size | 6.53 inches | 6.5 inches |
Resolution | 1080 x 2340 pixels | 720 x 1600 pixels |
Aspect ratio | 19.5:9 | 20:9 |
PPI | 395 ppi | 270 ppi |
Refresh rate | 60 Hz | 60 Hz |
HDR support | No | No |
Screen protection | Corning Gorilla Glass 5 | Tempered glass |
Screen-to-body ratio | 83.5% | 81.6% |
RGB color space | 97.7% | - |
PWM | Not detected | - |
Response time | 32.2 ms | - |
Contrast | 4608:1 | - |
Max. Brightness
Design and build
Height | 162.3 mm (6.39 inches) | 164.5 mm (6.48 inches) |
Width | 77.2 mm (3.04 inches) | 76 mm (2.99 inches) |
Thickness | 8.9 mm (0.35 inches) | 9.1 mm (0.36 inches) |
Weight | 199 gramm (7.02 oz) | 200 gramm (7.05 oz) |
Waterproof | No | No |
Rear material | Plastic | Plastic |
Frame material | Plastic | Plastic |
Colors | White, Gray, Green | Black, Blue |
Fingerprint scanner | Yes, rear | Yes, rear |
Screen-to-body ratio
Performance
Chipset | MediaTek Helio G85 | Unisoc T610 |
Max. clock | 2000 MHz | 1800 MHz |
CPU cores | 8 (2 + 6) | 8 (2 + 6) |
Architecture | - 6 cores at 1.8 GHz: Cortex-A55 - 2 cores at 2 GHz: Cortex-A75 |
- 6 cores at 1.82 GHz: Cortex-A55 - 2 cores at 1.82 GHz: Cortex-A75 |
L3 cache | - | 1 MB |
Lithography process | 12 nanometers | 12 nanometers |
Graphics | Mali-G52 MP2 | ARM Mali G52 MP2 |
GPU clock | 1000 MHz | 614 MHz |
FLOPS | ~59 GFLOPS | ~71.2 GFLOPS |
RAM size | 3, 4 GB | 3, 4 GB |
Memory type | LPDDR4X | LPDDR4X |
Memory clock | 2133 MHz | 1866 MHz |
Channels | 2 | 2 |
Storage size | 64, 128 GB | 32, 64 GB |
Storage type | eMMC 5.1 | eMMC 5.1 |
Memory card | MicroSD | MicroSD |
Memory card max. size | Up to 512 GB | Up to 256 GB |
Benchmarks
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
AnTuTu Benchmark 9
CPU | 72079 | 66485 |
GPU | 56729 | 32103 |
Memory | 43484 | 37779 |
UX | 81491 | 57506 |
Total score | 253168 | 192652 |
Software
Operating system | Android 10 (Can be upgraded to Android 11) | Android 11 |
ROM | MIUI 12.5 Enhanced Edition | Realme UI 2.0 |
OS size | 16.5 GB | - |
Battery
Capacity | 5020 mAh | 5000 mAh |
Charge power | 18 W | 10 W |
Battery type | Li-Po | Li-Po |
Replaceable | No | No |
Wireless charging | No | No |
Reverse charging | Yes | Yes |
Fast charging | Yes (50% in 40 min) | No |
Full charging time | 1:30 hr | 3:00 hr |
Web browsing | 12:34 hr | - |
Watching video | 14:56 hr | - |
Gaming | 05:48 hr | - |
Standby | 120 hr | - |
General battery life
Camera
Matrix | 48 megapixels | 13 megapixels |
Image resolution | 8000 x 6000 | 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 | 120 FPS (720p) | No |
Angle of widest lens | 118° | - |
Lenses | 4 (48 MP + 8 MP + 2 MP + 2 MP) | 3 (13 MP + 2 MP + 2 MP) |
Wide (main) lens | - 48 MP - Aperture: f/1.8 - Focal length: 26 mm - Pixel size: 0.8 micron - Sensor: 1/2.0", Samsung S5KGM1 (ISOCELL Plus CMOS) - Phase autofocus |
- 13 MP - Aperture: f/2.2 - Focal length: 26 mm - Sensor: 1/3.06" (CMOS) - Phase autofocus |
Ultra-wide lens | - 8 MP - Aperture: f/2.2 - Pixel size: 1.12 micron - Sensor: 1/4.0" (CMOS) |
- |
Macro lens | - 2 MP - Aperture: f/2.4 |
- 2 MP - Aperture: f/2.4 - Pixel size: 1.75 micron |
Depth lens | - 2 MP - Aperture: f/2.4 |
- 2 MP - Aperture: f/2.4 |
Camera features | - Bokeh mode - Pro mode |
- Bokeh mode |
Megapixels | 13 megapixels | 5 megapixels |
Image resolution | 4128 x 3096 | 2560 x 1960 |
Aperture | f/2.3 | f/2.2 |
Focal length | 29 mm | 27 mm |
Pixel size | 1.12 microns | 1.12 microns |
Sensor type | CMOS | CMOS |
Sensor size | 1/3.1" | 1/5" |
Video resolution | 1080p (Full HD) at 30 FPS | 1080p (Full HD) at 30 FPS |
Connectivity
Wi-Fi standard | Wi-Fi 5 (802.11 a/b/g/n/ac) | Wi-Fi 4 (802.11 a/b/g/n) |
Wi-Fi features | - Dual Band - 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 | USB Type-C | 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* | Yes | No |
Infrared port | Yes | 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 | Yes | No |
Dolby Atmos | No | No |
Speakers test
Max. loudness
Other
Category | Mid-range | Budget |
Announced | April 2020 | June 2021 |
Release date | June 2020 | July 2021 |
SAR (head) | 0.8 W/kg | - |
SAR (body) | 1.14 W/kg | - |
Sensors | - Proximity sensor - Gyroscope - 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
After analyzing all the data, we think that the Xiaomi Redmi Note 9 is definitely a better buy.
Cast your vote
Total votes: 29