Home Phone comparison Samsung Galaxy S21 and Realme C71 - Which is better?

Samsung Galaxy S21 vs Realme C71

65 out 100
Samsung Galaxy S21
VS
55 out 100
Realme C71
Samsung Galaxy S21
Realme C71

Compared 2 smartphones : Samsung Galaxy S21 Manufactured in February, 2021, with display 6.2 with chipsetSamsung Exynos 2100, vs Realme C71, Manufactured in June, 2025with chipsetUnisoc T7250. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy S21
  • Higher pixel density: 421ppi
  • Lighter design: 169g vs 196g
  • Supports newer USB: 3.2 vs 2
  • Supports Dolby Atmos
  • Built-in eSIM
Reasons to choose Realme C71
  • Larger display: 6.67in
  • Higher battery capacity: 6000mAh vs 4000mAh
  • Newer Bluetooth version: 5.2 vs 5
  • Includes charger

Versions

Available versions and configurations
Memory Options - 8/128 GB
- 8/256 GB		 - 4/64 GB
- 4/128 GB
- 6/128 GB
- 8/128 GB
- 8/256 GB

Review

Key Specs Samsung Galaxy S21 and Realme C71
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Samsung Galaxy S21
vs
Realme C71

Display

Display quality comparison
Type Dynamic AMOLED IPS LCD
Size 6.2 in 6.67 in
Resolution 1080x2400 pixels 720x1604 pixels
Aspect ratio 20:9 20:9
Pixel density 421 ppi 264 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (48-120 Hz) No
Max brightness 800 nits 725 nits
HDR support Yes HDR10+ No
Screen-to-body ratio 85.9 % 85.3 %
Features - DCI-P3
- Always-On Display		 n/a
Display test
Peak brightness (auto)
Samsung Galaxy S21
854 nits
Realme C71
n/a
sRGB gamut99.5 %n/a
PWM (Flicker)240 Hzn/a
Response time5 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy S21]

Design & Build

Design and ergonomics comparison
Height 151.7 mm (5.97 in) 165.8 mm (6.53 in)
Width 71.2 mm (2.8 in) 75.9 mm (2.99 in)
Thickness 7.9 mm (0.31 in) 7.79 mm (0.31 in)
Weight 169 g (5.96 oz) 196 g (6.91 oz)
Water resistance IP68 n/a
Back panel Plastic Plastic
Frame Metal Plastic
Colors - White
- Gray
- Pink
- Purple		 - White
- Green
Fingerprint sensor Yes In-Display Yes, In-Button
Screen-to-body ratio
Samsung Galaxy S21
85.9 %
Realme C71
85.3 %

Performance

Testing Samsung Galaxy S21 and Realme C71 In benchmarks
Processor
Chipset Samsung Exynos 2100 Unisoc T7250
Max Frequency 2900 MHz 1800 MHz
CPU Cores 8 (1 + 3 + 4) 8 (2 + 6)
Architecture - 4/2.2 (Cortex-A55)
- 3/2.81 (Cortex-A78)
- 1/2.91 (Cortex-X1)		 - 6/1.6 (Cortex-A55)
- 2/1.8 (Cortex-A75)
Process Samsung TSMC
Transistor Size 5 nm 12 nm
Neural Processor Yes No
Graphics Mali-G78 MP14 Mali-G57 MP1
GPU Cores 896 32
GPU Frequency 854 MHz 850 MHz
FLOPS 1530.4 GFLOPS 54.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S21
1331
Realme C71
440
Geekbench 6 (Multi-Core)
Samsung Galaxy S21
3593
Realme C71
1472
Geekbench 6 (Single-Core)1331440
Geekbench 6 (Multi-Core)35931472
Geekbench Compute (GPU)n/a732
Sources: Geekbench v6 [Realme C71]
AnTuTu 10
AnTuTu 10
Samsung Galaxy S21
903780
Realme C71
267686
CPU25339188439
GPU28167630767
Memory15835279469
UX21036169011
NanoReview Score903780267686
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S21
5715
Realme C71
n/a
Max Surface Temp.38.9 °Cn/a
Stability66 %n/a
Graphics Test34 fpsn/a
Graphics Score5715n/a
Sources: 3DMark [Samsung Galaxy S21]
PCMark 3.0
PCMark 3.0
Samsung Galaxy S21
13123
Realme C71
n/a
Writing score16101n/a
Web score11909n/a
Video editing7097n/a
Data manipulation10153n/a
NanoReview Score13123n/a

Memory

RAM
RAM Size 8 GB 4 GB
Memory Type LPDDR5 LPDDR4X
Memory Frequency 2750 MHz 1866 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB		64 GB
Storage TypeUFS 3.1eMMC 5.1
Memory CardNoMicroSD

Software

OS Android 11 (Upgradeable to Android 14) Android 15
OS Size 28.1 GB n/a
UI Skin One UI 6.0 Realme UI 6.0

Battery

Volume 4000 mAh 6000 mAh
Max Charging Power 25 W 45 W
Battery Type Li-ion Li-Po
Removable No No
Wireless Charging Yes (15 W) No
Reverse Charging Yes (Wireless) Yes
Fast Charging Yes (55% in 50 min) Yes (50% in 36 min)
Full Charge Time 1:35 h n/a
Battery Life Test
Battery Life
Samsung Galaxy S21
17:54
Realme C71
n/a
Web Browsing06:01 hn/a
Video Playback11:06 hn/a
Games04:21 hn/a
Standby Mode95 hn/a

Main camera

Matrix 12 MP 50 MP
Photo resolution 4000x3000 pixels 8160x6144 pixels
Zoom Optical, 1.1x Digital
Flash Dual LED LED
Stabilization Optical Digital
8K Recording Up to 24FPS No
4K Recording Yes (Up to 60 fps) No
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 960 fps (720p) n/a
Wide-angle lens 120 ° n/a
Lenses count Standard: 12 MP
Telephoto: 64 MP
Ultra-wide: 12 MP		 Standard: 50 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
Main lens
Matrix12 MP50 MP
Aperturef/1.8f/1.8
Focal length26 mm27 mm
SensorSony IMX555n/a
Sensor size1/1.761/2.88 (0.35)
Pixel size1.8 μmn/a
AutofocusPhase autofocus (Dual Pixel)Phase autofocus
StabilizationOpticalDigital
Telephoto
Matrix64 MPn/a
Aperturef/2.0n/a
Focal length28 mmn/a
SensorSamsung Bright S5KGW2n/a
Sensor size1/1.72n/a
Pixel size0.8 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix12 MPn/a
Aperturef/2.2n/a
Focal length13 mmn/a
SensorSony IMX563n/a
Sensor size1/2.55n/a
Pixel size1.4 μmn/a
StabilizationDigitaln/a
Main camera DxOMark results
Photo quality
Samsung Galaxy S21
129
Realme C71
n/a
Video quality
Samsung Galaxy S21
137
Realme C71
n/a
Overall camera score
Samsung Galaxy S21
133
Realme C71
n/a
Bokeh70n/a
Preview72n/a
Zoom126n/a
Sources: DxOMark [Samsung Galaxy S21]

Front camera

Matrix 10 MP 5 MP
Photo resolution 3872x2592 pixels n/a
Aperture f/2.2 f/2.2
Focal length 26 mm 27 mm
Sensor Sony IMX374 CMOS
Sensor size 1/3.24 1/5 (0.2)
Pixel size 1.22 μm n/a
Autofocus Phase autofocus (Dual Pixel) No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 a/b/g/n/ac/ax) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5.2
Bluetooth features LE, A2DP LE
USB type USB Type-C USB Type-C
USB version 3.2 2
USB features - Charging
- USB Storage Mode
- USB-Host mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort n/a No
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Varies by region
Infrared Port No No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G BandsGSM 850, 900, 1800, 1900 MHzGSM 850/900/1800/1900MHz
3G BandsWCDMA Band 1, 2, 4, 5, 8WCDMA 1/5/8
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B38/B39/B40/B41/B66)LTE (B3/B5/B7/B8/B20/B28/B38/B40/B41)
LTE category24n/a
5G SupportYesNo

Sound

Speakers Stereo n/a
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes No
Speaker Test
Max Volume
Samsung Galaxy S21
87 dB
Realme C71
n/a

Other

Class Flagship Budget
Announced January, 2021 yr June, 2025 yr
Release Date February, 2021 yr June, 2025 yr
Launch Price ($) 800 n/a
MSRP ($) n/a 109
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included n/a Yes, 45 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy S21 the clear winner in this comparison.

Survey

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