Home Phone comparison Samsung Galaxy S24 Ultra and Xiaomi Redmi 15 4G - Which is better?

Samsung Galaxy S24 Ultra vs Xiaomi Redmi 15 4G

87 out 100
Samsung Galaxy S24 Ultra
VS
60 out 100
Xiaomi Redmi 15 4G
Samsung Galaxy S24 Ultra
Xiaomi Redmi 15 4G

Compared 2 smartphones : Samsung Galaxy S24 Ultra Manufactured in January, 2024, with display 6.8 with chipsetQualcomm Snapdragon 8 Gen 3 (for Galaxy), vs Xiaomi Redmi 15 4G, Manufactured in August, 2025with chipsetQualcomm Snapdragon 685. 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 S24 Ultra
  • Higher pixel density: 501ppi
  • Newer Bluetooth version: 5.3 vs 5
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Supports Dolby Atmos
  • Built-in eSIM
Reasons to choose Xiaomi Redmi 15 4G
  • Larger display: 6.9in
  • Higher refresh rate: 144Hz
  • Lighter design: 224g vs 232g
  • Higher battery capacity: 7000mAh vs 5000mAh
  • Infrared port
  • Includes charger

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 12/512 GB
- 12/1024 GB		 - 6/128 GB
- 8/256 GB

Review

Key Specs Samsung Galaxy S24 Ultra and Xiaomi Redmi 15 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
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 S24 Ultra
vs
Xiaomi Redmi 15 4G

Display

Display quality comparison
Type Dynamic AMOLED IPS LCD
Size 6.8 in 6.9 in
Resolution 1440x3088 pixels 1080x2340 pixels
Aspect ratio 19.5:9 19.5:9
Pixel density 501 ppi 374 ppi
Refresh rate 120 Hz 144 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes
Max brightness 2600 nits n/a
HDR support Yes HDR10+ No
Touch Sampling Rate 240 Hz n/a
Screen-to-body ratio 88.5 % 83.1 %
Features - DCI-P3
- Always-On Display
- DC dimming		 n/a
Display test
Peak brightness (auto)
Samsung Galaxy S24 Ultra
1445 nits
Xiaomi Redmi 15 4G
n/a
sRGB gamut99.5 %n/a
PWM (Flicker)480 Hzn/a
Response time1 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy S24 Ultra]

Design & Build

Design and ergonomics comparison
Height 162.3 mm (6.39 in) 171.1 mm (6.74 in)
Width 79 mm (3.11 in) 82.1 mm (3.23 in)
Thickness 8.6 mm (0.34 in) 8.6 mm (0.34 in)
Weight 232 g (8.18 oz) 224 g (7.9 oz)
Water resistance IP68 IP64
Cooling system Vapor chamber n/a
Back panel Glass Plastic
Frame Metal Plastic
Colors - Black
- Gray
- Blue
- Green
- Orange
- Purple
- Yellow		 - Black
- Gray
- Purple
Fingerprint sensor Yes In-Display Yes, In-Button
Screen-to-body ratio
Samsung Galaxy S24 Ultra
88.5 %
Xiaomi Redmi 15 4G
83.1 %

Performance

Testing Samsung Galaxy S24 Ultra and Xiaomi Redmi 15 4G In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Gen 3 (for Galaxy) Qualcomm Snapdragon 685
Max Frequency 3390 MHz 2800 MHz
CPU Cores 8 (1 + 3 + 2 + 2) 8 (4 + 4)
Architecture - 2/2.27 (Cortex-A520)
- 2/2.96 (Cortex-A720)
- 3/3.15 (Cortex-A720)
- 1/3.3 (Cortex-X4)		 - 4/1.9 (Cortex-A53)
- 4/2.8 (Cortex-A73)
Process TSMC TSMC
Transistor Size 4 nm 6 nm
Neural Processor Hexagon Hexagon 686
Graphics Adreno 750 Adreno 610
GPU Cores 1536 128
GPU Frequency 1000 MHz 1260 MHz
FLOPS 2774 GFLOPS 322.6 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S24 Ultra
2271
Xiaomi Redmi 15 4G
475
Geekbench 6 (Multi-Core)
Samsung Galaxy S24 Ultra
7119
Xiaomi Redmi 15 4G
1514
Geekbench 6 (Single-Core)2271475
Geekbench 6 (Multi-Core)71191514
Sources: Geekbench v6 [Samsung Galaxy S24 Ultra]
AnTuTu 10
AnTuTu 10
Samsung Galaxy S24 Ultra
1954703
Xiaomi Redmi 15 4G
380990
CPU432608114885
GPU80187057988
Memory418926103236
UX301299104881
NanoReview Score1954703380990
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S24 Ultra
16056
Xiaomi Redmi 15 4G
n/a
Max Surface Temp.46.8 °Cn/a
Stability59 %n/a
Graphics Test96 fpsn/a
Graphics Score16056n/a
Sources: 3DMark [Samsung Galaxy S24 Ultra]
PCMark 3.0
PCMark 3.0
Samsung Galaxy S24 Ultra
18029
Xiaomi Redmi 15 4G
n/a
Writing score22590n/a
Web score18325n/a
Video editing8000n/a
Data manipulation15921n/a
NanoReview Score18029n/a

Memory

RAM
RAM Size 12 GB 6 GB
Memory Type LPDDR5X LPDDR4X
Memory Frequency 4200 MHz 2133 MHz
Channels 4 2
Storage
Storage Capacity- 256 GB
- 512 GB
- 1024 GB		128 GB
Storage TypeUFS 4.0UFS 2.2
Memory CardNoMicroSD

Software

OS Android 14 Android 15
OS Size 28 GB n/a
UI Skin One UI 6.1 HyperOS 2.0

Battery

Volume 5000 mAh 7000 mAh
Max Charging Power 45 W 33 W
Battery Type Li-ion n/a
Removable No No
Wireless Charging Yes (15 W) No
Reverse Charging Yes (Wireless) No
Fast Charging Yes (69% in 30 min) Yes
Full Charge Time 1:05 h n/a
Battery Life Test
Battery Life
Samsung Galaxy S24 Ultra
26:30
Xiaomi Redmi 15 4G
n/a
Web Browsing10:18 hn/a
Video Playback18:00 hn/a
Games05:51 hn/a
Standby Mode122 hn/a

Main camera

Matrix 200 MP 50 MP
Photo resolution 16320x12240 pixels n/a
Zoom Optical, 5x Digital
Flash LED LED
Stabilization Optical Digital
8K Recording Yes (Up to 30 fps) No
4K Recording Yes (Up to 120 fps) No
1080p Recording Yes (Up to 240 fps) Yes (Up to 30 fps)
Slow Motion 240 fps (1080p) n/a
Wide-angle lens 120 ° n/a
Lenses count Standard: 200 MP
Telephoto: 50 MP
Telephoto: 12 MP
Ultra-wide: 12 MP		 Standard: 50 MP
Depth
Features - Bokeh effect
- Pro mode
- RAW support		 Bokeh effect
Main lens
Matrix200 MP50 MP
Aperturef/1.7f/1.8
Focal length23 mmn/a
SensorSamsung ISOCELL HP2n/a
Sensor size1/1.3n/a
Pixel size0.6 μmn/a
AutofocusLaser autofocusPhase autofocus
StabilizationOpticalDigital
Telephoto
Matrix50 MPn/a
Aperturef/3.4n/a
Focal length111 mmn/a
SensorSony IMX854n/a
Sensor size1/2.52n/a
Pixel size0.7 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 S24 Ultra
144
Xiaomi Redmi 15 4G
n/a
Video quality
Samsung Galaxy S24 Ultra
137
Xiaomi Redmi 15 4G
n/a
Overall camera score
Samsung Galaxy S24 Ultra
144
Xiaomi Redmi 15 4G
n/a
Bokeh70n/a
Preview82n/a
Zoom145n/a
Sources: DxOMark [Samsung Galaxy S24 Ultra]

Front camera

Matrix 12 MP 8 MP
Photo resolution 4000x3000 pixels n/a
Aperture f/2.2 f/2.0
Focal length 26 mm n/a
Sensor Samsung S5K3LU n/a
Sensor size 1/3.2 n/a
Pixel size 1.12 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 7 (802.11 a/b/g/n/ac/ax/be) 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 5.3 5
Bluetooth features LE LE
USB type USB Type-C USB Type-C
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 Yes
Infrared Port No Yes
Connectivity
SIM Count*12
SIM TypeNanoNano
SIM Moden/aDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G BandsGSM850, GSM900, DCS1800, PCS1900n/a
3G BandsWCDMA B1(2100), B2(1900), B4(AWS), B5(850), B8(900)n/a
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B66)n/a
LTE category20n/a
5G SupportYesNo

Sound

Speakers Stereo n/a
3.5 mm Jack No Yes
FM Radio No No
Dolby Atmos Yes n/a
Speaker Test
Max Volume
Samsung Galaxy S24 Ultra
93 dB
Xiaomi Redmi 15 4G
n/a

Other

Class Flagship Budget
Announced January, 2024 yr August, 2025 yr
Release Date January, 2024 yr August, 2025 yr
Launch Price ($) 1299 n/a
MSRP ($) n/a 150
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included No Yes, 33 W

Note

Samsung Galaxy S24 Ultra:

There is a model with two physical SIM cards and no eSIM, and another with one physical SIM card and eSIM support.

* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy S24 Ultra the clear winner in this comparison.

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