Home Phone comparison Samsung Galaxy A51 and Realme 15T - Which is better?

Samsung Galaxy A51 vs Realme 15T

41 out 100
Samsung Galaxy A51
VS
66 out 100
Realme 15T
Samsung Galaxy A51
Realme 15T

Compared 2 smartphones : Samsung Galaxy A51 Manufactured in December, 2019, with display 6.5 with chipsetSamsung Exynos 9 Octa 9611, vs Realme 15T, Manufactured in September, 2025with chipsetMediaTek Dimensity 6400 Max. 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 A51
  • Higher pixel density: 405ppi
  • Lighter design: 172g vs 181g
  • Supports Dolby Atmos
Reasons to choose Realme 15T
  • Larger display: 6.57in
  • Higher refresh rate: 120Hz
  • Higher battery capacity: 7000mAh vs 4000mAh
  • Newer Bluetooth version: 5.3 vs 5
  • Infrared port
  • Includes charger

Versions

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

Review

Key Specs Samsung Galaxy A51 and Realme 15T
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 A51
vs
Realme 15T

Display

Display quality comparison
Type Super AMOLED AMOLED
Size 6.5 in 6.57 in
Resolution 1080x2400 pixels 1080x2372 pixels
Aspect ratio 20:9 20:9
Pixel density 405 ppi 401 ppi
Refresh rate 60 Hz 120 Hz
Adaptive refresh rate No Yes (60-120 Hz)
Max brightness 400 nits 4000 nits
HDR support No No
Touch Sampling Rate n/a 240 Hz
Screen-to-body ratio 87.5 % 87.6 %
Features Always-On Display - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Samsung Galaxy A51
631 nits
Realme 15T
n/a
sRGB gamut98.8 %n/a
PWM (Flicker)242 Hzn/a
Response time25 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy A51]

Design & Build

Design and ergonomics comparison
Height 158.5 mm (6.24 in) 158.36 mm (6.23 in)
Width 73.6 mm (2.9 in) 75.19 mm (2.96 in)
Thickness 7.9 mm (0.31 in) 7.79 mm (0.31 in)
Weight 172 g (6.07 oz) 181 g (6.38 oz)
Water resistance No IP69
Back panel Plastic Plastic
Frame Plastic Plastic
Colors - White
- Black		 - Silver
- Gray
- Blue
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Samsung Galaxy A51
87.5 %
Realme 15T
87.6 %

Performance

Testing Samsung Galaxy A51 and Realme 15T In benchmarks
Processor
Chipset Samsung Exynos 9 Octa 9611 MediaTek Dimensity 6400 Max
Max Frequency 2300 MHz 2500 MHz
CPU Cores 8 (4 + 4) 8 (2 + 6)
Architecture - 4/1.7 (Cortex-A53)
- 4/2.3 (Cortex-A73)		 - 6/2 (Cortex-A55)
- 2/2.5 (Cortex-A76)
Process Samsung TSMC
Transistor Size 10 nm 6 nm
Neural Processor Yes Yes
Graphics Mali-G72 MP3 Mali-G57 MP2
GPU Cores 54 64
GPU Frequency 850 MHz 1072 MHz
FLOPS 113.8 GFLOPS 137.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A51
512
Realme 15T
808
Geekbench 6 (Multi-Core)
Samsung Galaxy A51
1556
Realme 15T
2046
Geekbench 6 (Single-Core)512808
Geekbench 6 (Multi-Core)15562046
Geekbench Compute (GPU)n/a1424
Sources: Geekbench v6 [Realme 15T]
AnTuTu 10
AnTuTu 10
Samsung Galaxy A51
268760
Realme 15T
605158
CPU83857223513
GPU4516648052
Memory63828167188
UX75909166405
NanoReview Score268760605158
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy A51
812
Realme 15T
n/a
Max Surface Temp.42.2 °Cn/a
Stability95 %n/a
Graphics Test4 fpsn/a
Graphics Score812n/a
Sources: 3DMark [Samsung Galaxy A51]

Memory

RAM
RAM Size - 4 GB
- 6 GB		 8 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 1866 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity- 64 GB
- 128 GB		128 GB
Storage TypeUFS 2.0UFS 2.2
Memory CardMicroSDMicroSD

Software

OS Android 10 (Upgradeable to Android 13) Android 15
OS Size 23 GB n/a
UI Skin One UI 5.1 Realme UI 6.0

Battery

Volume 4000 mAh 7000 mAh
Max Charging Power 15 W 60 W
Battery Type Li-Po Silicon Carbon (Si/C)
Removable No No
Wireless Charging No No
Reverse Charging No Yes
Fast Charging Yes (40% in 35 min) Yes
Full Charge Time 1:50 h n/a
Battery Life Test
Battery Life
Samsung Galaxy A51
17:53
Realme 15T
n/a
Web Browsing07:15 hn/a
Video Playback11:25 hn/a
Games04:49 hn/a
Standby Mode81 hn/a

Main camera

Matrix 48 MP 50 MP
Photo resolution 8000x6000 pixels 8192x6144 pixels
Zoom Digital Digital
Flash LED LED
Stabilization Digital Optical
8K Recording No No
4K Recording Yes (Up to 30 fps) No
1080p Recording Yes (Up to 30 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 120 fps (720p)
Wide-angle lens 120 ° n/a
Lenses count Standard: 48 MP
Ultra-wide: 12 MP
Macro: 5 MP
Depth: 5 MP		 Standard: 50 MP
Depth: 2 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
Main lens
Matrix48 MP50 MP
Aperturef/2.0f/1.8
Focal length26 mm27 mm
SensorSony IMX582Omnivision OV50D40 Light Hunter 400
Sensor size1/21/2.88
Pixel size0.8 μm0.61 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalOptical
Ultra-wide lens
Matrix12 MPn/a
Aperturef/2.2n/a
Focal length13 mmn/a
Pixel size1.12 μmn/a
StabilizationDigitaln/a

Front camera

Matrix 32 MP 50 MP
Photo resolution 6560x4928 pixels 8192x6144 pixels
Aperture f/2.2 f/1.8
Focal length 26 mm 27 mm
Sensor Samsung S5KGD1 Omnivision OV50D40 Light Hunter 400
Sensor size 1/2.8 1/2.88
Pixel size 0.8 μm 0.61 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 2160p (4K) at 30 fps 1080p (Full HD) at 60 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
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- 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
- 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 *NoNo
Hybrid SlotNoNo
2G BandsGSM 850 / 900 / 1800 / 2100 / 2600GSM 850/900/1800MHz
3G BandsUMTS 850 / 900 / 1900 / 2100WCDMA 1/5/8
LTE Bands*LTE (B850/B900/B1800/B2100/B2600)LTE (B1/B3/B5/B8/B40/B41)
LTE category12n/a
5G SupportNoYes

Sound

Speakers Mono n/a
3.5 mm Jack Yes No
FM Radio Yes No
Dolby Atmos Yes n/a
Speaker Test
Max Volume
Samsung Galaxy A51
81.7 dB
Realme 15T
n/a

Other

Class Mid-range Mid-range
Announced December, 2019 yr September, 2025 yr
Release Date December, 2019 yr September, 2025 yr
Launch Price ($) 399 n/a
MSRP ($) n/a 230
Sensors - 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, 60 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Realme 15T the clear winner in this comparison.

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