Home Phone comparison Realme 15T and Tecno Spark Slim - Which is better?

Realme 15T vs Tecno Spark Slim

66 out 100
Realme 15T
VS
62 out 100
Tecno Spark Slim
Realme 15T
Tecno Spark Slim

Compared 2 smartphones : Realme 15T Manufactured in September, 2025, with display 6.57 with chipsetMediaTek Dimensity 6400 Max, vs Tecno Spark Slim, Manufactured in October, 2025with chipsetMediaTek Helio G200. 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 Realme 15T
  • Higher battery capacity: 7000mAh vs 5160mAh
Reasons to choose Tecno Spark Slim
  • Larger display: 6.78in
  • Higher pixel density: 440ppi
  • Higher refresh rate: 144Hz
  • Lighter design: 156g vs 181g
  • Newer Bluetooth version: 5.4 vs 5.3
  • Supports Dolby Atmos

Versions

Available versions and configurations
Memory Options - 8/128 GB
- 8/256 GB
- 12/256 GB
- 12/512 GB		 n/a

Review

Key Specs Realme 15T and Tecno Spark Slim
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:
Realme 15T
vs
Tecno Spark Slim

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.57 in 6.78 in
Resolution 1080x2372 pixels 1224x2720 pixels
Aspect ratio 20:9 20:9
Pixel density 401 ppi 440 ppi
Refresh rate 120 Hz 144 Hz
Adaptive refresh rate Yes (60-120 Hz) Yes
Max brightness 4000 nits 4500 nits
HDR support No No
Touch Sampling Rate 240 Hz n/a
Screen-to-body ratio 87.6 % 89.1 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- DC dimming

Design & Build

Design and ergonomics comparison
Height 158.36 mm (6.23 in) 164.2 mm (6.46 in)
Width 75.19 mm (2.96 in) 75.9 mm (2.99 in)
Thickness 7.79 mm (0.31 in) 5.93 mm (0.23 in)
Weight 181 g (6.38 oz) 156 g (5.5 oz)
Water resistance IP69 IP64
Back panel Plastic n/a
Frame Plastic Plastic
Colors - Silver
- Gray
- Blue		 - White
- Black
Fingerprint sensor Yes, In-Display Yes, In-Display
Screen-to-body ratio
Realme 15T
87.6 %
Tecno Spark Slim
89.1 %

Performance

Testing Realme 15T and Tecno Spark Slim In benchmarks
Processor
Chipset MediaTek Dimensity 6400 Max MediaTek Helio G200
Max Frequency 2500 MHz 2200 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/2 (Cortex-A55)
- 2/2.5 (Cortex-A76)		 - 6/2 (Cortex-A55)
- 2/2.2 (Cortex-A76)
Process TSMC TSMC
Transistor Size 6 nm 6 nm
Neural Processor Yes Yes
Graphics Mali-G57 MP2 Mali-G57 MP2
GPU Cores 64 64
GPU Frequency 1072 MHz 1100 MHz
FLOPS 137.2 GFLOPS 140.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Realme 15T
808
Tecno Spark Slim
718
Geekbench 6 (Multi-Core)
Realme 15T
2046
Tecno Spark Slim
1985
Geekbench 6 (Single-Core)808718
Geekbench 6 (Multi-Core)20461985
Geekbench Compute (GPU)14241480
Sources: Geekbench v6 [Realme 15T], [Tecno Spark Slim]
AnTuTu 10
AnTuTu 10
Realme 15T
605158
Tecno Spark Slim
591552
CPU223513220476
GPU4805248665
Memory167188149900
UX166405172511
NanoReview Score605158591552

Memory

RAM
RAM Size 8 GB 8 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 2133 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity128 GB256 GB
Storage TypeUFS 2.2UFS 2.2
Memory CardMicroSDNo

Software

OS Android 15 Android 15
UI Skin Realme UI 6.0 HIOS 15

Battery

Volume 7000 mAh 5160 mAh
Max Charging Power 60 W 45 W
Battery Type Silicon Carbon (Si/C) Li-Po
Removable No No
Wireless Charging No No
Reverse Charging Yes Yes
Fast Charging Yes Yes (52% in 30 min)
Full Charge Time n/a 0:57 h

Main camera

Matrix 50 MP 50 MP
Photo resolution 8192x6144 pixels 8160x6144 pixels
Zoom Digital Digital
Flash LED Dual LED
Stabilization Optical Digital
8K Recording No No
4K Recording No No
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 120 fps (720p) n/a
Lenses count Standard: 50 MP
Depth: 2 MP		 Standard: 50 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
Main lens
Matrix50 MP50 MP
Aperturef/1.8n/a
Focal length27 mmn/a
SensorOmnivision OV50D40 Light Hunter 400n/a
Sensor size1/2.88n/a
Pixel size0.61 μmn/a
AutofocusPhase autofocusPhase autofocus
StabilizationOpticalDigital

Front camera

Matrix 50 MP 13 MP
Photo resolution 8192x6144 pixels n/a
Aperture f/1.8 n/a
Focal length 27 mm n/a
Sensor Omnivision OV50D40 Light Hunter 400 CMOS
Sensor size 1/2.88 n/a
Pixel size 0.61 μm n/a
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 60 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 MiMO
- 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 5.3 5.4
Bluetooth features LE 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 No No
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Varies by region Yes
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM 850/900/1800MHzn/a
3G BandsWCDMA 1/5/8n/a
LTE Bands*LTE (B1/B3/B5/B8/B40/B41)n/a
5G SupportYesNo

Sound

3.5 mm Jack No No
FM Radio No Yes
Dolby Atmos n/a Yes

Other

Class Mid-range Mid-range
Announced September, 2025 yr September, 2025 yr
Release Date September, 2025 yr October, 2025 yr
MSRP ($) 230 190
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes, 60 W Yes, 45 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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