Home Phone comparison Samsung Galaxy A8 (2018) and Xiaomi Redmi Note 15 4G - Which is better?

Samsung Galaxy A8 (2018) vs Xiaomi Redmi Note 15 4G

36 out 100
Samsung Galaxy A8 (2018)
VS
64 out 100
Xiaomi Redmi Note 15 4G
Samsung Galaxy A8 (2018)
Xiaomi Redmi Note 15 4G

Compared 2 smartphones : Samsung Galaxy A8 (2018) Manufactured in January, 2018, with display 5.6 with chipsetSamsung Exynos 7 Octa 7885, vs Xiaomi Redmi Note 15 4G, Manufactured in December, 2025with chipsetMediaTek Helio G100 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 A8 (2018)
  • Higher pixel density: 441ppi
  • Lighter design: 172g vs 183.7g
  • Supports Dolby Atmos
Reasons to choose Xiaomi Redmi Note 15 4G
  • Larger display: 6.77in
  • Higher refresh rate: 120Hz
  • Higher battery capacity: 6000mAh vs 3000mAh
  • Newer Bluetooth version: 5.3 vs 5

Versions

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

Review

Key Specs Samsung Galaxy A8 (2018) and Xiaomi Redmi Note 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 A8 (2018)
vs
Redmi Note 15 4G

Display

Display quality comparison
Type Super AMOLED AMOLED
Size 5.6 in 6.77 in
Resolution 1080x2220 pixels 1080x2340 pixels
Aspect ratio 18.5:9 n/a
Pixel density 441 ppi 388 ppi
Refresh rate 60 Hz 120 Hz
Adaptive refresh rate No Yes (60-120 Hz)
Max brightness 390 nits n/a
HDR support No No
Screen-to-body ratio 75.5 % 89.7 %
Features n/a DCI-P3
Display test
Peak brightness (auto)
Samsung Galaxy A8 (2018)
586 nits
Xiaomi Redmi Note 15 4G
n/a
PWM (Flicker)242 Hzn/a
Response time4.6 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy A8 (2018)]

Design & Build

Design and ergonomics comparison
Height 149.2 mm (5.87 in) 164 mm (6.46 in)
Width 70.6 mm (2.78 in) 75.4 mm (2.97 in)
Thickness 8.4 mm (0.33 in) 7.4 mm (0.29 in)
Weight 172 g (6.07 oz) 183.7 g (6.48 oz)
Water resistance IP68 IP64
Back panel Glass Plastic
Frame Metal Plastic
Colors - Black
- Gold
- Blue		 - Black
- Blue
- Green
- Purple
Fingerprint sensor Yes rear Yes, In-Display
Screen-to-body ratio
Samsung Galaxy A8 (2018)
75.5 %
Xiaomi Redmi Note 15 4G
89.7 %

Performance

Testing Samsung Galaxy A8 (2018) and Xiaomi Redmi Note 15 4G In benchmarks
Processor
Chipset Samsung Exynos 7 Octa 7885 MediaTek Helio G100 Ultra
Max Frequency 2200 MHz 2200 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/1.6 (Cortex-A53)
- 2/2.2 (Cortex-A73)		 - 6/2 (Cortex-A55)
- 2/2.2 (Cortex-A76)
Process Samsung TSMC
Transistor Size 14 nm 6 nm
Neural Processor No Yes
Graphics Mali-G71 MP2 Mali-G57 MP2
GPU Cores 32 64
GPU Frequency 770 MHz 1000 MHz
FLOPS 70.4 GFLOPS 128 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A8 (2018)
n/a
Xiaomi Redmi Note 15 4G
730
Geekbench 6 (Multi-Core)
Samsung Galaxy A8 (2018)
n/a
Xiaomi Redmi Note 15 4G
2025
Geekbench 6 (Single-Core)n/a730
Geekbench 6 (Multi-Core)n/a2025
AnTuTu 10
AnTuTu 10
Samsung Galaxy A8 (2018)
202681
Xiaomi Redmi Note 15 4G
437184
CPU73673132724
GPU2665772238
Memory50080109980
UX52271122242
NanoReview Score202681437184

Memory

RAM
RAM Size 4 GB 6 GB
Memory Type LPDDR4 LPDDR4X
Memory Frequency 1333 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity- 32 GB
- 64 GB		128 GB
Storage TypeeMMC 5.1UFS 2.2
Memory CardMicroSDNo

Software

OS Android 7.1.1 (Upgradeable to Android 9) Android 15
UI Skin One UI 2.0 HyperOS 2.0

Battery

Volume 3000 mAh 6000 mAh
Max Charging Power 18 W 33 W
Battery Type Li-ion Silicon Carbon (Si/C)
Removable No No
Wireless Charging No No
Reverse Charging No Yes
Fast Charging Yes Samsung Adaptive Fast Charge (50% in 30 min) Yes
Full Charge Time 1:35 h n/a
Battery Life Test
Battery Life
Samsung Galaxy A8 (2018)
17:10
Xiaomi Redmi Note 15 4G
n/a
Web Browsing06:38 hn/a
Video Playback11:19 hn/a
Games04:20 hn/a
Standby Mode80 hn/a

Main camera

Matrix 16 MP 108 MP
Photo resolution 4920x3264 pixels n/a
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording No No
1080p Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
Slow Motion No n/a
Lenses count Standard: 16 MP Standard: 108 MP
Depth: 2 MP
Features - Bokeh effect
- Pro mode
Main lens
Matrix16 MP108 MP
Aperturef/1.7f/1.7
Focal length26 mm24 mm
SensorSamsung S5K2P6SXn/a
Sensor size1/2.81/1.67 (0.6)
Pixel size1.12 μm0.64 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy A8 (2018)
82
Xiaomi Redmi Note 15 4G
n/a
Video quality
Samsung Galaxy A8 (2018)
74
Xiaomi Redmi Note 15 4G
n/a
Overall camera score
Samsung Galaxy A8 (2018)
79
Xiaomi Redmi Note 15 4G
n/a

Front camera

Matrix 16 MP 20 MP
Photo resolution 4608x3456 pixels n/a
Aperture f/1.9 f/2.2
Focal length 27 mm n/a
Sensor Samsung S5K3P8SP Omnivision OV02F
Sensor size 1/3.1 1/5 (0.2)
Pixel size 1 μm 1.75 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5.3
Bluetooth features PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP LE
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort n/a No
GPS - GPS
- GLONASS
- Beidou		 - 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 *NoNo
Hybrid SlotNoNo
2G BandsGSM 850, GSM 900, GSM 1800, GSM 1900n/a
3G BandsHSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100n/a
LTE Bands*LTE (B800/B850/B900/B1700/B1800/B1900/B2100/B2300/B2500)n/a
LTE category11n/a
5G SupportNoNo

Sound

Speakers Mono n/a
3.5 mm Jack Yes No
FM Radio Yes Yes
Dolby Atmos Yes n/a
Speaker Test
Max Volume
Samsung Galaxy A8 (2018)
85 dB
Xiaomi Redmi Note 15 4G
n/a

Other

Class Mid-range Mid-range
Announced December, 2017 yr December, 2025 yr
Release Date January, 2018 yr December, 2025 yr
Launch Price ($) 480 n/a
Sensors - Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Xiaomi Redmi Note 15 4G the clear winner in this comparison.

Survey

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