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Oppo Realme C25 vs Realme C21

Here we compared two budget smartphones: the 6.5-inch Oppo Realme C25 (with MediaTek Helio G70) that was released on March 23, 2021, against the Oppo Realme C21, which is powered by MediaTek Helio G35. 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 C25
  • 74% better performance in AnTuTu Benchmark (197K versus 113K)
  • Comes with 1000 mAh larger battery capacity: 6000 vs 5000 mAh
  • Modern USB Type-C port
  • Compatible with Wi-Fi 5 wireless networks
  • Supports 18W fast charging
  • More recent OS version: Android 11 versus 10
  • 2x faster in single-core GeekBench 5 test: 338 and 172 points
Reasons to consider the Oppo Realme C21
  • Uses a faster type of memory: LPDDR4X 1866 MHz
  • Weighs 19 grams less

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
HDR support No No
Screen protection Corning Gorilla Glass Tempered glass
Screen-to-body ratio 81.7% 80.8%
Max. Brightness
474 nits
442 nits

Design and build

Height 164.5 mm (6.48 inches) 165.2 mm (6.5 inches)
Width 75.9 mm (2.99 inches) 76.4 mm (3.01 inches)
Thickness 9.6 mm (0.38 inches) 8.9 mm (0.35 inches)
Weight 209 gramm (7.37 oz) 190 gramm (6.7 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%
80.8%

Performance

Tests of Oppo Realme C25 and Oppo Realme C21 in the benchmarks
SoC
Chipset MediaTek Helio G70 MediaTek Helio G35
Max. clock 2000 MHz 2300 MHz
CPU cores 8 (2 + 6) 8 (8)
Architecture - 6 cores at 1.7 GHz: Cortex-A55
- 2 cores at 2 GHz: Cortex-A75
- 8 cores at 2.3 GHz: Cortex-A53
L3 cache 1 MB -
Lithography process 12 nanometers 12 nanometers
Graphics Mali-G52 2EEMC2 IMG PowerVR GE8320
GPU clock 820 MHz 680 MHz
FLOPS ~54.6 GFLOPS ~54.4 GFLOPS
Memory
RAM size 4 GB 3, 4 GB
Memory type LPDDR4 LPDDR4X
Memory clock - 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

Benchmarks

Geekbench 5 (Single-Core)
Realme C25 +97%
338
Geekbench 5 (Multi-Core)
Realme C25 +35%
1318
AnTuTu Benchmark 8
Realme C25 +74%
197583
113364

Software

Operating system Android 11 Android 10
ROM Realme UI 2.0 Realme UI 1.0

Battery

Specifications
Capacity 6000 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 (40% in 50 min) No
Full charging time 2:46 hr 2:55 hr

Camera

Specs and camera test of smartphones
Main 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 - No
Lenses 3 (48 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
- Phase autofocus
- 13 MP
- Aperture: f/2.2
- Focal length: 26 mm
- 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
- Sensor: 1/5" (CMOS)
- 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5" (CMOS)
Depth lens - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5" (CMOS)
-
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" 1/5"
Video resolution 1080p (Full HD) при 30 FPS 1080p (Full HD) при 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 5 (802.11 a/b/g/n/ac/ax) 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 USB Type-C Micro USB
USB version 2 2
USB features - Charging
- USB-Storage mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou 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* 7 7
5G support No No

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos No No

Other

Category Budget Budget
Announced March 2021 March 2021
Release date March 2021 March 2021
Launch price ~ 163 USD ~ 125 USD
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

After analyzing all the data, we think that the Oppo Realme C25 is definitely a better buy.

Cast your vote

So, which phone would you choose?
3 (75%)
1 (25%)
Total votes: 4

User opinions

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