Oppo Realme C25Y vs Realme C21Y

Here we compared two budget smartphones: the 6.5-inch Oppo Realme C25Y (with Unisoc T610) that was released on September 16, 2021, against the Oppo Realme C21Y, which is powered by the same chip and came out 3 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Oppo Realme C25Y
  • Supports 18W fast charging
  • 14% better performance in AnTuTu Benchmark (222K versus 194K)
  • Slow-motion recording at 120FPS
Reasons to consider the Oppo Realme C21Y
  • Reverse charging feature
  • The front-facing camera can record video at 1080p
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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.
Price

Tests and specifications

Comparison table of technical specifications and tests

Display

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
Max rated brightness 420 nits 400 nits
HDR support No No
Screen protection Tempered glass Tempered glass
Screen-to-body ratio 81.7% 81.6%
Display tests
RGB color space 92.8% -
PWM 176 Hz -
Response time 37 ms -
Contrast 935:1 -
Peak brightness test (auto)
402 nits
Sources: NotebookCheck [3]

Design and build

Height 164.5 mm (6.48 inches) 164.5 mm (6.48 inches)
Width 75 mm (2.95 inches) 76 mm (2.99 inches)
Thickness 9.1 mm (0.36 inches) 9.1 mm (0.36 inches)
Weight 200 g (7.05 oz) 200 g (7.05 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors Gray, Blue Black, Blue
Fingerprint scanner Yes, rear Yes, rear
Screen-to-body ratio
81.7%
81.6%

Performance

Tests of Oppo Realme C25Y and Oppo Realme C21Y in the benchmarks
SoC
Chipset Unisoc T610 Unisoc T610
Max. clock 1800 MHz 1800 MHz
CPU cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6 cores at 1.82 GHz: Cortex-A55
- 2 cores at 1.82 GHz: Cortex-A75
- 6 cores at 1.82 GHz: Cortex-A55
- 2 cores at 1.82 GHz: Cortex-A75
L3 cache 1 MB 1 MB
Lithography process 12 nanometers 12 nanometers
Graphics ARM Mali G52 MP2 ARM Mali G52 MP2
GPU clock 614 MHz 614 MHz
FLOPS ~71.2 GFLOPS ~71.2 GFLOPS

Benchmarks

Geekbench 5 (Single-Core)
352
Geekbench 5 (Multi-Core)
1317
AnTuTu Benchmark 9
222071
194492
CPU 72471 66485
GPU 43166 32103
Memory 42703 37779
UX 61789 57506
Total score 222071 194492
3DMark Wild Life Performance
PCMark 3.0 score 7876 -
Sources: 3DMark [3]

Memory

RAM
RAM size 4, 6 GB 3, 4 GB
Memory type LPDDR4X LPDDR4X
Memory clock 1866 MHz 1866 MHz
Channels 2 2
Storage
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 256 GB Up to 256 GB

Software

Operating system Android 11 Android 11
ROM Realme UI R Realme UI 2.0
OS size 18 GB -

Battery

Specifications
Capacity 5000 mAh 5000 mAh
Charge power 18 W 10 W
Battery type Li-Po Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No Yes
Fast charging Yes (30% in 31 min) No
Full charging time 1:56 hr 3:00 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 50 megapixels 13 megapixels
Image resolution 8700 x 5800 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
Lenses 3 (50 MP + 2 MP + 2 MP) 3 (13 MP + 2 MP + 2 MP)
Wide (main) lens - 50 MP
- Aperture: f/1.8
- Focal length: 26 mm
- 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
- 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
Selfie camera
Megapixels 8 megapixels 5 megapixels
Image resolution 3264 x 2448 2560 x 1960
Aperture f/2.0 f/2.2
Focal length 26 mm 27 mm
Pixel size 1.12 microns 1.12 microns
Sensor type CMOS CMOS
Sensor size 1/4.0" 1/5"
Video resolution 720p 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 - 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, A2DP LE, HID, A2DP
USB type Micro USB Micro USB
USB version 2 2
USB features - Charging
- USB-Storage mode
- Charging
- USB-Storage mode
GPS GPS, GLONASS, Beidou, Galileo GPS, GLONASS, Beidou
NFC* No No
Infrared port No No
Network
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 2021 June 2021
Release date September 2021 July 2021
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

These smartphones have a lot in common, but we would recommend the Oppo Realme C25Y. It has a better battery life, camera, and sound.

Cast your vote

So, which phone would you choose?
62 (56.9%)
47 (43.1%)
Total votes: 109

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