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Oppo Realme C25 vs Realme 6i

Here we compared two smartphones: the 6.5-inch Oppo Realme C25 (with MediaTek Helio G70) that was released on March 23, 2021, against the Oppo Realme 6i, which is powered by Mediatek Helio G80 and came out 12 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 C25
  • Comes with 1000 mAh larger battery capacity: 6000 vs 5000 mAh
  • The phone is 1-year newer
  • More recent OS version: Android 11 versus 10
Reasons to consider the Oppo Realme 6i
  • Uses a faster type of memory: LPDDR4X 1866 MHz
  • Delivers 9% higher maximum brightness (522 against 478 nits)
  • Has an ultra-wide angle camera lens
  • Supports Dolby Atmos sound technology
  • 15% faster in single-core GeekBench 5 test: 390 and 339 points
  • Weighs 18 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
Phone:
vs

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 Corning Gorilla Glass 3
Screen-to-body ratio 81.7% 82.3%
Display tests
RGB color space - 93.4%
PWM - Not detected
Response time - 31 ms
Contrast - 1992:1
Max. Brightness
478 nits
Realme 6i +9%
522 nits
Sources: NotebookCheck [1]

Design and build

Height 164.5 mm (6.48 inches) 162.1 mm (6.38 inches)
Width 75.9 mm (2.99 inches) 74.8 mm (2.94 inches)
Thickness 9.6 mm (0.38 inches) 8.9 mm (0.35 inches)
Weight 209 gramm (7.37 oz) 191 gramm (6.74 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors Gray, Blue White, Green
Fingerprint scanner Yes, rear Yes, rear
Screen-to-body ratio
81.7%
Realme 6i +1%
82.3%

Performance

Tests of Oppo Realme C25 and Oppo Realme 6i in the benchmarks
SoC
Chipset MediaTek Helio G70 Mediatek Helio G80
Max. clock 2000 MHz 2000 MHz
CPU cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6 cores at 1.7 GHz: Cortex-A55
- 2 cores at 2 GHz: Cortex-A75
- 6 cores at 1.8 GHz: Cortex-A55
- 2 cores at 2 GHz: Cortex-A75
L3 cache 1 MB -
Lithography process 12 nanometers 12 nanometers
Graphics Mali-G52 2EEMC2 Mali-G52 MP2
GPU clock 820 MHz 950 MHz
FLOPS ~54.6 GFLOPS ~54.6 GFLOPS
Memory
RAM size 4 GB 4 GB
Memory type LPDDR4 LPDDR4X
Memory clock - 1866 MHz
Channels 2 2
Storage
Storage size 64, 128 GB 128 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 6i +15%
390
Geekbench 5 (Multi-Core)
1309
1315
AnTuTu Benchmark 8
194190
Realme 6i +2%
198317

Software

Operating system Android 11 Android 10.0
ROM Realme UI 2.0 Realme UI 1.0
OS size - 16 GB

Battery

Specifications
Capacity 6000 mAh 5000 mAh
Charge power 18 W 18 W
Battery type Li-Po Li-Ion
Replaceable No No
Wireless charging No No
Reverse charging Yes Yes
Fast charging Yes (40% in 50 min) Yes (65% in 45 min)
Full charging time 2:46 hr 1:17 hr

Battery life tests

Web browsing (Wi-Fi)
29:59 hr
Watching videos (Player)
20:55 hr
Talk (3G)
34:59 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 48 megapixels 48 megapixels
Image resolution 8000 x 6000 8000 x 6000
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
Angle of widest lens - 119°
Lenses 3 (48 MP + 2 MP + 2 MP) 4 (48 MP + 8 MP + 2 MP + 2 MP)
Wide (main) lens - 48 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Phase autofocus
- 48 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2.25" (CMOS)
- Phase autofocus
Ultra-wide lens - - 8 MP
- Aperture: f/2.3
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/4.0" (CMOS)
Monochrome lens - - 2 MP
- Aperture: f/2.4
- Focal length: 22 mm
- 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
- Focal length: 22 mm
- Pixel size: 1.75 micron
- Sensor: 1/5.0" (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
- Pro mode
Selfie camera
Megapixels 8 megapixels 16 megapixels
Image resolution 3264 x 2448 4920 x 3264
Aperture f/2.0 f/2.0
Focal length 26 mm 26 mm
Pixel size 1.12 microns 1 microns
Sensor type CMOS CMOS
Sensor size 1/4" 1/3.1"
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 5 (802.11 b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features LE, A2DP LE, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB-Storage mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou GPS, GLONASS, Beidou, Galileo
NFC* No Yes
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 Yes
Speakers test
Max. loudness
86.4 dB

Other

Category Budget Mid-range
Announced March 2021 March 2020
Release date March 2021 March 2020
Launch price ~ 163 USD ~ 187 USD
SAR (head) - 0.71 W/kg
SAR (body) - 0.57 W/kg
Sensors - Proximity sensor
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Proximity sensor
- Gyroscope
- 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, software, and battery life are more important to you, then choose the Oppo Realme C25. But if the performance, camera, and sound are more of a priority – go for the Oppo Realme 6i.

Cast your vote

So, which phone would you choose?
0 (0%)
4 (100%)
Total votes: 4

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