Home Phone comparison Samsung Galaxy S23 Ultra and Xiaomi Redmi 9A - Which is better?

Samsung Galaxy S23 Ultra vs Xiaomi Redmi 9A

81 out 100
Samsung Galaxy S23 Ultra
VS
36 out 100
Xiaomi Redmi 9A
Samsung Galaxy S23 Ultra
Xiaomi Redmi 9A

Compared 2 smartphones : Samsung Galaxy S23 Ultra Manufactured in February, 2023, with display 6.8 with chipsetSnapdragon 8 Gen 2 Mobile Platform for Galaxy, vs Xiaomi Redmi 9A, Manufactured in August, 2020 with chipsetMediaTek Helio G25. 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 S23 Ultra
  • Larger display: 6.8in
  • Higher pixel density: 500ppi
  • Higher refresh rate: 120Hz
  • Newer Bluetooth version: 5.3 vs 5
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Supports Dolby Atmos
  • Built-in eSIM
  • Fingerprint scanner
Reasons to choose Xiaomi Redmi 9A
  • Lighter design: 194g vs 233g

Versions

Available versions and configurations
Memory Options - 8/256 GB
- 12/256 GB
- 12/512 GB
- 12/1024 GB		 - 2/32 GB
- 3/32 GB
- 4/64 GB
- 4/128 GB
- 6/128 GB

Review

Key Specs Samsung Galaxy S23 Ultra and Xiaomi Redmi 9A
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:
Galaxy S23 Ultra
vs
Xiaomi Redmi 9A

Display

Display quality comparison
Type Dynamic AMOLED IPS LCD
Size 6.8 in 6.53 in
Resolution 1440x3088 pixels 720x1600 pixels
Aspect ratio 19.3:9 20:9
Pixel density 500 ppi 269 ppi
Refresh rate 120 Hz 60 Hz
Adaptive refresh rate Yes (1-120 Hz) No
Max brightness 850 nits 400 nits
HDR support Yes HDR10+ No
Touch Sampling Rate 240 Hz n/a
Screen-to-body ratio 89.5 % 81.1 %
Features - DCI-P3
- Always-On Display		 n/a
Display test
Peak brightness (auto)
Samsung Galaxy S23 Ultra
1269 nits
Xiaomi Redmi 9A
434 nits
sRGB gamut96.9 %92.9 %
PWM (Flicker)240 Hzn/a
Response time2 ms40 ms
Contrast∞ Infinite1318:1
Sources: NotebookCheck [Samsung Galaxy S23 Ultra], [Xiaomi Redmi 9A]

Design & Build

Design and ergonomics comparison
Height 163.4 mm (6.43 in) 164.9 mm (6.49 in)
Width 78.1 mm (3.07 in) 77 mm (3.03 in)
Thickness 8.9 mm (0.35 in) 9 mm (0.35 in)
Weight 233 g (8.22 oz) 194 g (6.84 oz)
Water resistance IP68 No
Cooling system Vapor chamber n/a
Back panel Glass Plastic
Frame Metal Plastic
Colors - White
- Black
- Gray
- Blue
- Green
- Red
- Purple		 - Gray
- Blue
- Green
Fingerprint sensor Yes In-Display No
Screen-to-body ratio
Samsung Galaxy S23 Ultra
89.5 %
Xiaomi Redmi 9A
81.1 %

Performance

Testing Samsung Galaxy S23 Ultra and Xiaomi Redmi 9A In benchmarks
Processor
Chipset Snapdragon 8 Gen 2 Mobile Platform for Galaxy MediaTek Helio G25
Max Frequency 3360 MHz 2000 MHz
CPU Cores 8 (1 + 2 + 2 + 3) 8 (4 + 4)
Architecture - 3/2 (Cortex-A510)
- 2/2.8 (Cortex-A710)
- 2/2.8 (Cortex-A715)
- 1/3.2 (Cortex-X3)		 - 4/1.5 (Cortex-A53)
- 4/2 (Cortex-A53)
Process TSMC TSMC
Transistor Size 4 nm 12 nm
Neural Processor Hexagon No
Graphics Adreno 740 PowerVR GE8320
GPU Cores 1536 32
GPU Frequency 719 MHz 650 MHz
FLOPS 2089 GFLOPS 41.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S23 Ultra
1976
Xiaomi Redmi 9A
472
Geekbench 6 (Multi-Core)
Samsung Galaxy S23 Ultra
5221
Xiaomi Redmi 9A
1524
Geekbench 6 (Single-Core)1976472
Geekbench 6 (Multi-Core)52211524
AnTuTu 10
AnTuTu 10
Samsung Galaxy S23 Ultra
1541246
Xiaomi Redmi 9A
125125
CPU37108450728
GPU60073216844
Memory29900428611
UX27046228942
NanoReview Score1541246125125
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S23 Ultra
12160
Xiaomi Redmi 9A
n/a
Max Surface Temp.34.8 °Cn/a
Stability64 %n/a
Graphics Test72 fpsn/a
Graphics Score12160n/a
Sources: 3DMark [Samsung Galaxy S23 Ultra]
PCMark 3.0
PCMark 3.0
Samsung Galaxy S23 Ultra
16130
Xiaomi Redmi 9A
n/a
Writing score19799n/a
Web score16101n/a
Video editing7815n/a
Data manipulation13142n/a
NanoReview Score16130n/a

Memory

RAM
RAM Size - 8 GB
- 12 GB		 - 2 GB
- 4 GB
- 6 GB
Memory Type LPDDR5X LPDDR4X
Memory Frequency 4200 MHz 1600 MHz
Channels 4 2
Storage
Storage Capacity- 256 GB
- 512 GB
- 1024 GB		- 32 GB
- 64 GB
- 128 GB
Storage TypeUFS 4.0eMMC 5.1
Memory CardNoMicroSD

Software

OS Android 13 (Upgradeable to Android 14) Android 10 (Upgradeable to Android 11)
OS Size 39.9 GB 11 GB
UI Skin One UI 6.1 MIUI 12.5 Enhanced

Battery

Volume 5000 mAh 5000 mAh
Max Charging Power 45 W 10 W
Battery Type Li-ion Li-Po
Removable No No
Wireless Charging Yes (15 W) No
Reverse Charging Yes (Wireless) No
Fast Charging Yes (68% in 30 min) No
Full Charge Time 0:59 h 2:55 h
Battery Life Test
Battery Life
Samsung Galaxy S23 Ultra
26:01
Xiaomi Redmi 9A
24:07
Web Browsing09:57 h10:08 h
Video Playback15:38 h13:37 h
Games06:22 h05:37 h
Standby Mode130 h118 h

Main camera

Matrix 200 MP 13 MP
Photo resolution 16320x12240 pixels 4128x3096 pixels
Zoom Optical, 10x Digital
Flash LED LED
Stabilization Optical Digital
8K Recording Yes (Up to 30 fps) No
4K Recording Yes (Up to 60 fps) No
1080p Recording Yes (Up to 120 fps) Yes (Up to 30 fps)
Slow Motion 960 fps (1080p) No
Wide-angle lens 120 ° n/a
Lenses count Standard: 200 MP
Telephoto: 10 MP
Telephoto: 10 MP
Ultra-wide: 12 MP		 Standard: 13 MP
Features - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix200 MP13 MP
Aperturef/1.7f/2.2
Focal length23 mm28 mm
SensorSamsung ISOCELL HP2n/a
Sensor size1/1.3n/a
Pixel size0.64 μm1 μm
AutofocusLaser autofocusPhase autofocus
StabilizationOpticalDigital
Telephoto
Matrix10 MPn/a
Aperturef/4.9n/a
Focal length230 mmn/a
SensorSony IMX754n/a
Sensor size1/3.52n/a
Pixel size1.12 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix12 MPn/a
Aperturef/2.2n/a
Focal length13 mmn/a
SensorSony IMX564n/a
Sensor size1/2.55n/a
Pixel size1.4 μmn/a
StabilizationDigitaln/a
Main camera DxOMark results
Photo quality
Samsung Galaxy S23 Ultra
139
Xiaomi Redmi 9A
n/a
Video quality
Samsung Galaxy S23 Ultra
137
Xiaomi Redmi 9A
n/a
Overall camera score
Samsung Galaxy S23 Ultra
140
Xiaomi Redmi 9A
n/a
Bokeh70n/a
Preview73n/a
Zoom141n/a
Sources: DxOMark [Samsung Galaxy S23 Ultra]

Front camera

Matrix 12 MP 5 MP
Photo resolution 4000x3000 pixels 2560x1960 pixels
Aperture f/2.2 f/2.2
Focal length 26 mm n/a
Sensor Samsung S5K3LU CMOS
Sensor size 1/3.24 n/a
Pixel size 1.12 μm 1.12 μm
Autofocus Phase autofocus No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No
Selfie camera DxOMark results
Photo quality
Samsung Galaxy S23 Ultra
139
Xiaomi Redmi 9A
n/a
Video quality
Samsung Galaxy S23 Ultra
145
Xiaomi Redmi 9A
n/a

Connectivity

Wi-Fi version Wi-Fi 6E (802.11 a/b/g/n/ac/ax) Wi-Fi 4 (802.11 a/b/g/n)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.3 5
Bluetooth features LE LE, HID, A2DP
USB type USB Type-C Micro USB
USB version 3.2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort Yes DP 1.2 n/a
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes No
Infrared Port No No
Connectivity
SIM Count*12
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G Bandsn/aGSM B2/3/5/8
3G Bandsn/aWCDMA B1/2/4/5/8
LTE Bands*n/aLTE (B1/B2/B3/B4/B5/B7/B8/B20/B28)
LTE category204
5G SupportYesNo

Sound

Speakers Stereo Mono
3.5 mm Jack No Yes
FM Radio No Yes
Dolby Atmos Yes No
Speaker Test
Max Volume
Samsung Galaxy S23 Ultra
91.8 dB
Xiaomi Redmi 9A
76.5 dB

Other

Class Flagship Budget
Announced February, 2023 yr June, 2020 yr
Release Date February, 2023 yr August, 2020 yr
Launch Price ($) 1199 100
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Accelerometer
- Ambient Light Sensor
Charger Included No n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy S23 Ultra the clear winner in this comparison.

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