Home Phone comparison Samsung Galaxy S21 and Realme 16 - Which is better?

Samsung Galaxy S21 vs Realme 16

65 out 100
Samsung Galaxy S21
VS
69 out 100
Realme 16
Samsung Galaxy S21
Realme 16

Compared 2 smartphones : Samsung Galaxy S21 Manufactured in February, 2021, with display 6.2 with chipsetSamsung Exynos 2100, vs Realme 16, Manufactured in February, 2026 with chipsetMediaTek Dimensity 6400 Turbo. 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 183g
  • Supports newer USB: 3.2 vs 2
  • Supports Dolby Atmos
  • Built-in eSIM
Reasons to choose Realme 16
  • Larger display: 6.57in
  • Higher battery capacity: 7000mAh vs 4000mAh
  • Newer Bluetooth version: 5.3 vs 5
  • Infrared port
  • Includes charger

Versions

Available versions and configurations
Memory Options - 8/128 GB
- 8/256 GB		 - 8/256 GB
- 12/256 GB

Review

Key Specs Samsung Galaxy S21 and Realme 16
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.
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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 16

Display

Display quality comparison
Type Dynamic AMOLED AMOLED
Size 6.2 in 6.57 in
Resolution 1080x2400 pixels 1080x2372 pixels
Aspect ratio 20:9 19.5:9
Pixel density 421 ppi 397 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (48-120 Hz) Yes (60-120 Hz)
Max brightness 800 nits 1400 nits
HDR support Yes HDR10+ Yes, HDR10+
Screen-to-body ratio 85.9 % 89.1 %
Features - DCI-P3
- Always-On Display		 - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Samsung Galaxy S21
854 nits
Realme 16
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) 158.3 mm (6.23 in)
Width 71.2 mm (2.8 in) 75.1 mm (2.96 in)
Thickness 7.9 mm (0.31 in) 8.1 mm (0.32 in)
Weight 169 g (5.96 oz) 183 g (6.46 oz)
Water resistance IP68 IP69
Cooling system n/a Vapor chamber
Back panel Plastic Plastic
Frame Metal Plastic
Colors - White
- Gray
- Pink
- Purple		 - White
- Black
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Samsung Galaxy S21
85.9 %
Realme 16
89.1 %

Performance

Testing Samsung Galaxy S21 and Realme 16 In benchmarks
Processor
Chipset Samsung Exynos 2100 MediaTek Dimensity 6400 Turbo
Max Frequency 2900 MHz 2500 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)		 - 6/2 (Cortex-A55)
- 2/2.5 (Cortex-A76)
Process Samsung TSMC
Transistor Size 5 nm 6 nm
Neural Processor Yes Yes
Graphics Mali-G78 MP14 Mali-G57 MP2
GPU Cores 896 64
GPU Frequency 854 MHz 1072 MHz
FLOPS 1530.4 GFLOPS 137.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S21
1331
Realme 16
809
Geekbench 6 (Multi-Core)
Samsung Galaxy S21
3593
Realme 16
2043
Geekbench 6 (Single-Core)1331809
Geekbench 6 (Multi-Core)35932043
Sources: Geekbench v6 [Realme 16]
AnTuTu 10
AnTuTu 10
Samsung Galaxy S21
903780
Realme 16
564125
CPU253391222910
GPU28167648154
Memory158352127147
UX210361165914
NanoReview Score903780564125
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S21
5715
Realme 16
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 16
n/a
Writing score16101n/a
Web score11909n/a
Video editing7097n/a
Data manipulation10153n/a
NanoReview Score13123n/a

Memory

RAM
RAM Size 8 GB 8 GB
Memory Type LPDDR5 LPDDR4X
Memory Frequency 2750 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB		256 GB
Storage TypeUFS 3.1UFS 2.2
Memory CardNoMicroSD

Software

OS Android 11 (Upgradeable to Android 14) Android 16
OS Size 28.1 GB n/a
UI Skin One UI 6.0 Realme UI 7.0

Battery

Volume 4000 mAh 7000 mAh
Max Charging Power 25 W 60 W
Battery Type Li-ion Silicon Carbon (Si/C)
Removable No No
Wireless Charging Yes (15 W) No
Reverse Charging Yes (Wireless) Yes
Fast Charging Yes (55% in 50 min) Yes
Full Charge Time 1:35 h n/a
Battery Life Test
Battery Life
Samsung Galaxy S21
17:54
Realme 16
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 8192x6144 pixels
Zoom Optical, 1.1x Digital
Flash Dual LED LED
Stabilization Optical Optical
8K Recording Up to 24FPS No
4K Recording Yes (Up to 60 fps) No
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 240 fps (1080p)
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 mmn/a
SensorSony IMX555n/a
Sensor size1/1.761/2.93 (0.34)
Pixel size1.8 μm0.6 μm
AutofocusPhase autofocus (Dual Pixel)Laser autofocus
StabilizationOpticalOptical
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 16
n/a
Video quality
Samsung Galaxy S21
137
Realme 16
n/a
Overall camera score
Samsung Galaxy S21
133
Realme 16
n/a
Bokeh70n/a
Preview72n/a
Zoom126n/a
Sources: DxOMark [Samsung Galaxy S21]

Front camera

Matrix 10 MP 50 MP
Photo resolution 3872x2592 pixels 8192x6144 pixels
Aperture f/2.2 f/2.4
Focal length 26 mm 23 mm
Sensor Sony IMX374 n/a
Sensor size 1/3.24 n/a
Pixel size 1.22 μm n/a
Autofocus Phase autofocus (Dual Pixel) No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 2160p (4K) at 60 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 MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5.3
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 Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoYes
2G BandsGSM 850, 900, 1800, 1900 MHzn/a
3G BandsWCDMA Band 1, 2, 4, 5, 8n/a
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)n/a
LTE category24n/a
5G SupportYesYes

Sound

Speakers Stereo n/a
3.5 mm Jack No No
FM Radio No n/a
Dolby Atmos Yes No
Speaker Test
Max Volume
Samsung Galaxy S21
87 dB
Realme 16
n/a

Other

Class Flagship Mid-range
Announced January, 2021 yr January, 2026 yr
Release Date February, 2021 yr February, 2026 yr
Launch Price ($) 800 n/a
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included n/a Yes, 80 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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