Home Phone comparison Samsung Galaxy S21 and Xiaomi Redmi 17 4G - Which is better?

Samsung Galaxy S21 vs Xiaomi Redmi 17 4G

65 out 100
Samsung Galaxy S21
VS
56 out 100
Xiaomi Redmi 17 4G
Samsung Galaxy S21
Xiaomi Redmi 17 4G

Compared 2 smartphones : Samsung Galaxy S21 Manufactured in February, 2021, with display 6.2 with chipsetSamsung Exynos 2100, vs Xiaomi Redmi 17 4G, Manufactured in August, 2026 with chipsetMediaTek Helio G91 Ultra. 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 232g
  • Supports newer USB: 3.2 vs 2
  • Supports Dolby Atmos
  • Built-in eSIM
Reasons to choose Xiaomi Redmi 17 4G
  • Larger display: 6.9in
  • Higher battery capacity: 7500mAh vs 4000mAh
  • Newer Bluetooth version: 5.4 vs 5
  • Infrared port
  • Includes charger

Versions

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

Review

Key Specs Samsung Galaxy S21 and Xiaomi Redmi 17 4G
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
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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
Xiaomi Redmi 17 4G

Display

Display quality comparison
Type Dynamic AMOLED IPS LCD
Size 6.2 in 6.9 in
Resolution 1080x2400 pixels 720x1600 pixels
Aspect ratio 20:9 20:9
Pixel density 421 ppi 254 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (48-120 Hz) Yes (60-120 Hz)
Max brightness 800 nits 825 nits
HDR support Yes HDR10+ No
Touch Sampling Rate n/a 240 Hz
Screen-to-body ratio 85.9 % 86.1 %
Features - DCI-P3
- Always-On Display		 n/a
Display test
Peak brightness (auto)
Samsung Galaxy S21
854 nits
Xiaomi Redmi 17 4G
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) 170.12 mm (6.7 in)
Width 71.2 mm (2.8 in) 78.42 mm (3.09 in)
Thickness 7.9 mm (0.31 in) 8.8 mm (0.35 in)
Weight 169 g (5.96 oz) 232 g (8.18 oz)
Water resistance IP68 IP64
Back panel Plastic Eco Leather
Frame Metal Plastic
Colors - White
- Gray
- Pink
- Purple		 - Black
- Blue
- Green
- Purple
Fingerprint sensor Yes In-Display Yes, In-Button
Screen-to-body ratio
Samsung Galaxy S21
85.9 %
Xiaomi Redmi 17 4G
86.1 %

Performance

Testing Samsung Galaxy S21 and Xiaomi Redmi 17 4G In benchmarks
Processor
Chipset Samsung Exynos 2100 MediaTek Helio G91 Ultra
Max Frequency 2900 MHz 2000 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)		 - 6/1.8 (Cortex-A55)
- 2/2 (Cortex-A75)
Process Samsung TSMC
Transistor Size 5 nm 12 nm
Neural Processor Yes MediaTek APU
Graphics Mali-G78 MP14 n/a
GPU Cores 896 n/a
GPU Frequency 854 MHz n/a
FLOPS 1530.4 GFLOPS n/a
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S21
1331
Xiaomi Redmi 17 4G
402
Geekbench 6 (Multi-Core)
Samsung Galaxy S21
3593
Xiaomi Redmi 17 4G
1399
Geekbench 6 (Single-Core)1331402
Geekbench 6 (Multi-Core)35931399
AnTuTu 10
AnTuTu 10
Samsung Galaxy S21
903780
Xiaomi Redmi 17 4G
365150
CPU253391137550
GPU28167638034
Memory15835286828
UX210361102738
NanoReview Score903780365150
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S21
5715
Xiaomi Redmi 17 4G
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
Xiaomi Redmi 17 4G
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 2133 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB		128 GB
Storage TypeUFS 3.1eMMC 5.1
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 HyperOS 3

Battery

Volume 4000 mAh 7500 mAh
Max Charging Power 25 W 45 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
Xiaomi Redmi 17 4G
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 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) No
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 size1/1.761/3.06 (0.33)
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
Xiaomi Redmi 17 4G
n/a
Video quality
Samsung Galaxy S21
137
Xiaomi Redmi 17 4G
n/a
Overall camera score
Samsung Galaxy S21
133
Xiaomi Redmi 17 4G
n/a
Bokeh70n/a
Preview72n/a
Zoom126n/a
Sources: DxOMark [Samsung Galaxy S21]

Front camera

Matrix 10 MP 8 MP
Photo resolution 3872x2592 pixels n/a
Aperture f/2.2 f/2.1
Focal length 26 mm n/a
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 No
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 5.4
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 Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoYes
2G BandsGSM 850, 900, 1800, 1900 MHzGSM 2/3/5/8
3G BandsWCDMA Band 1, 2, 4, 5, 8WCDMA B1/5/8
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 (B1/B3/B5/B7/B8/B20/B28/B38/B40/B41)
LTE category24n/a
5G SupportYesNo

Sound

Speakers Stereo n/a
3.5 mm Jack No Yes
FM Radio No Yes
Dolby Atmos Yes No
Speaker Test
Max Volume
Samsung Galaxy S21
87 dB
Xiaomi Redmi 17 4G
n/a

Other

Class Flagship Mid-range
Announced January, 2021 yr August, 2026 yr
Release Date February, 2021 yr August, 2026 yr
Launch Price ($) 800 n/a
MSRP ($) n/a 219
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint 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

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